27 results about "Industrial waste" patented technology

The invention provides a method for solidifying and cementing tannery sludge containing heavy metals by bacillus pasteurii. The method comprises the following steps: mixing a bacteria solution of thebacillus pasteurii with tannery sludge to be treated under an aerobic condition, adding urea and calcium chloride into the bacteria solution, and solidifying at 20 to 30 DEG C for 12 to 15 days to finish solidification treatment of the tannery sludge containing heavy metals; generating calcium carbonate precipitate in the presence of the urea and calcium chloride by urease-producing bacteria to fix and cement the heavy metals in the tannery sludge and achieve harmless treatment of industrial waste residue. The method provided by the invention has the advantages of simple process, convenience in operation, obvious effect, low treatment cost, wide application range, freeness from secondary pollution and the like. Through the method provided by the invention, solidification and cementation ofthe tannery sludge containing heavy metals are realized, obtained solidified heavy metals have small leaching amount and high compressive strength, and can be taken as a building material.

The invention discloses a welding waste gas treatment device which comprises an air inlet pipe, an air outlet pipe, and a waste gas treatment chamber, a primary filtering chamber and a waste gas absorbing chamber that are sequentially connected between the air inlet pipe and the air outlet pipe. On the premise that secondary pollution is guaranteed not to be caused, workshop operation is not affected, and the service life of equipment is not influenced, the welding waste gas treatment device adopts a multi-stage purifying device for the purification treatment of welding waste gas, thus not only effectively removing the welding smoke waste gas, but also degrading the tar smell of the welding smoke and various toxic and harmful gases. By the method combining physics and chemistry to treat the welding smoke waste gas or industrial waste gas, the device can fully treat the welding smoke waste gas or industrial waste gas, is high in efficiency, and has the advantages of being simple, economical and practical in the actual use and operation.

The invention discloses a simple and convenient synthesis method and application of waste grease based polyhydric alcohol. The synthesis method comprises the following steps: performing simple pretreatment such as filtration, dehydration and decoloration on waste grease, performing heating and stirring reaction with alkamine compounds, and performing amidation with free fatty acid in the waste grease and performing transesterification reaction with glyceride under heating conditions by using relatively high reaction activity of amino groups to form corresponding biological oil based polyhydric alcohol. The method disclosed by the invention is capable of achieving the purpose of turning waste into treasure by adopting the waste grease as a raw material, and an obtained polyhydric alcohol product has the characteristics of good biodegradability, simple and convenient preparation process, small emission of three industrial wastes, adjustable product structure and hydroxyl value, wide application range and low environmental influence level.

The invention relates to a foamed heat insulation material and a preparation method thereof. The heat insulation material is prepared from the following raw materials: 30-50 parts of high-alumina fly ash, 50-70 parts of waste glass powder, 10-30 parts of a fluxing agent and 0.5-1.5 parts of a foaming agent. The preparation method comprises the following steps: 1) mixing the high-alumina fly ash, waste glass powder, fluxing agent and foaming agent, adding water, carrying out wet grinding and mixing, so that slurry is obtained; 2) drying the slurry to obtain mixed powder, granulating the mixed powder, and carrying out dry pressing, so that a green body is obtained; and 3) carrying out high temperature sintering on the green body, so that the foamed heat insulation material is obtained. The heat preservation material provided by the invention has the advantages that the raw materials are selected from industrial waste, cost is low, the whole preparation process is simple in working procedure, and equipment requirement is low, so that popularization is easy.

The invention belongs to the field of energy storage materials adopting mixed molten salt and particularly relates to a mixed molten salt type heat transfer and storage working medium and an application thereof. The mixed molten salt type heat transfer and storage working medium is characterized by comprising components in percentage by mass as follows: 20wt%-30wt% of Ca(NO3)2*4H2O, 41wt%-50wt% of KNO3,5wt%-20wt% of NaNO3 and 10wt%-31wt% of NaNO2. The application of the mixed molten salt type heat transfer and storage working medium is characterized in that the mixed molten salt type heat transfer and storage working medium is widely applied to the medium-high-temperature heat transfer and heat storage fields, such as solar thermal power generation and storage, wind power curtailment, photoelectricity curtailment and ''coal to electricity'' heat storage and supply or industrial waste heat recovery and storage. The cost of ingredients used for preparing the mixed molten salt is low, and the preparation process is very simple; the thermophysical property of the mixed molten salt is very stable, the separation phenomenon of certain ingredients cannot be caused in the use process, the molten salt has a good heat transfer performance in a liquid-state temperature zone, and the saturated vapor pressure is lower than double barometric pressure. The working medium has low corrosivity for metal and has a wide application range.

The invention discloses a method for catalytic synthesis of dichloropropanol by hydrogen chloride-containing industrial waste gas and glycerol. The method synthesizes dichloropropanol by using hydrogen chloride-containing industrial waste gas and glycerol through a hydrochlorination reaction under the action of a catalyst; wherein the catalyst is zinc acetate or zinc adipate; the reaction temperature is 100-120 DEG C, and the reaction is performed for 72-96 hours under normal pressure. The invention adopts hydrogen chloride-containing industrial waste gas as a raw material, has the benefits of both economy and environmental protection.

Methods for extracting metalloid and metal species from a solid or liquid material by exposing the material to a fluid solvent, particularly supercritical CO2, and a chelating agent are described. The chelating agent forms a chelate with the species, the chelate being soluble in the fluid to allow removal of the species from the material. In preferred embodiments the extraction solvent is supercritical CO2 and the chelating agent comprises an organophosphorous chelating agent, particularly sulfur-containing organophosphorous chelating agents, including mixtures of chelating agents. Examples of chelating agents include monothiophosphinic acid, di-thiophosphinic acid, phosphine sulfite, phosphorothioic acid, and mixtures thereof. The method provides an environmentally benign process for removing metal and metalloids from industrial waste solutions, particularly acidic solutions. Both the chelate and the supercritical fluid can be regenerated and the contaminant species recovered to provide an economic, efficient process.

A highly water-retaining water-permeable brick prepared from a building recycled material and a preparation method thereof are disclosed. The brick comprises, by mass, 30-50 parts of a recycled fine aggregate, 30-50 parts of reclaimed sand, 1-3 parts of waste paper pulp, 2-5 parts of activated fly ash, 15-30 parts of Portland cement, 2-5 parts of an adhesive, 0.3-1 part of a composite water retention material, 0.2-0.5 part of lignin fiber, 0.5-1 part of industrial waste acid residue, 0.5-1 part of a water reducing agent, 0.5-3 parts of mineral pigment, 0.3-0.5 part of a water permeability agent and 10-20 parts of water. The water absorption and water retention properties of the brick are improved, raw materials are environmentally friendly and easily available, and a preparation process issimple.

The invention provides a comprehensive treatment method and system for red mud resource utilization, and belongs to the technical field of industrial waste residue resource utilization. According to the method, dried and heated red mud is directly and fully contacted with reducing gas and reacts with reducing gas; ferric oxide in the red mud is reduced into ferroferric oxide, ferroferric oxide isrecovered through magnetic separation, the remaining dry red mud can be directly processed to prepare cement or used for further separation of other metals, the technological process is simple and convenient, and the method has a good practical application value, especially large-scale industrialization value and industrialization application value.

The invention discloses a processing method for preparing modified plastic rubber through utilizing waste plastic and waste rubber. The processing method is characterized by comprising the following technological steps: (1) selecting raw materials, namely by weight percent, respectively selecting 30-40% of waste rubber which is obtained by crushing waste styrene butadiene rubber (SBR) (synthetic rubber which is prepared by polymerizing styrene and butadiene emulsion), 15%-20% of wood meal and 55-60% of industrial waste sand as the raw materials, wherein each 100 kilograms of the raw materials contain 5 kilograms of waste oil and the industrial waste sand contains waste plastic, pulverized fuel ash and calcium carbonate; (2) crushing and grinding; (3) stirring and smelting; (4) melting and mixing; (5) forming; (6) classifying and packaging; (7) forming plate products. The processing method is reasonable and simple in technology, the technological process is greatly shortened, the production cost is lowered, and the yield is increased; the formed particles have smooth surfaces, so that dust production is reduced or eradicated in feeding and mixing processes during the production; the processing method satisfies the requirements of a production technology, is accurate in feeding amount and ratio, generates small deviation and ensures the product quality, and the yield of enterprises is effectively improved.

The invention discloses glass fiber composite cement and a preparation method thereof. The glass fiber composite cement uses alkali-resistant glass fibers containing 12.5 wt% to 14 wt% of ZrO2 as rawmaterials, the alkali-resistant glass fibers containing 12.5 wt% to 14 wt% of ZrO2 as raw materials is prepared by modifying isophthalene neopentyl glycol type unsaturated polyester resin, dehydroacetic acid and 1-3 propylene glycol in silane coupling agent KH 570, and the glass fiber composite cement is prepared from the obtained alkali-resistant glass fibers as the raw materials and cement clinker, industrial waste residue, fly ash, slag and related auxiliary agents. The preparation method comprises the following steps of: firstly, calcining the industrial waste residue, slag and fly ash athigh temperature, then adding the cement clinker under the condition of medium temperature, and continuously calcining to obtain semi-finished cement; and then, mixing the semi-finished cement with the alkali-resistant glass fiber, the auxiliary agent and water at high speed, drying by hot air, and pulverizing into powder to obtain the finished cement. The cement prepared by the invention has lowalkalinity, high mechanical strength and strong stability and weatherability.

The invention provides a resource utilization method of fructus momordicae industrial waste. The resource utilization method comprises the following steps of performing preprocessing, performing mixedenzymolysis with cellulases and papain, performing ultrafiltration, performing strong acidic cation exchange resin chromatography, and performing freeze drying to prepare fructus momordicae protein powder. According to the characteristic that waste liquid generated by production of fructus momordicae shows acidic, acidic cellulases and papain are directly used for treating waste liquid, the maneuverability is high, and the method is suitable for industrial production. Besides, the enzymolysis efficiency is improved, the purpose of turning waste into wealth is realized, the fructus momordicaeresources are comprehensively utilized, considerable economic benefits are created, and the problem of environmental pollution is also solved. Besides, the technology process of the method is low in cost, fructus momordicae protein is produced from the fructus momordicae waste liquid, and the method can be widely applied to trade of health-care products and pharmaceutical industry. Waste can be turned into wealth, and the waste liquid can be recycled, so that the added value of the fructus momordicae is increased.

The invention provides a modular heat storage device which comprises a plurality of heat storage modules and a water storage tank, wherein the plurality of heat storage modules are connected through connecting pipes to form a heat storage body set, the heat storage body set is connected with the water storage tank through a water inlet pipe and a water outlet pipe, each heat storage module comprises a shell and a heat storage body, connectors allowing the water inlet pipe and the water outlet pipe to penetrate are formed in the shell, and the heat storage bodies are arranged in the shell and connected with the water inlet pipe and the water outlet pipe through connectors. The modular heat storage device has the beneficial effects that the use mode is flexible, multiple sets of modules can be connected for heat storage at the same time; when in use, the modules can be recombined according to actual conditions and placed in different spaces or positions, the modular heat storage device can also be used as a heat energy transfer terminal, off-peak electricity is used for centralized heat storage at night or industrial waste heat is used for heat storage, after heat storage is completed, the heat storage modules are conveyed to a use environment, and the modules are recombined according to requirements and flexibly used.

The invention belongs to the technical field of metallurgical industry waste treatment, and particularly relates to a method and equipment for eliminating high alkalinity of red mud through supergravity, soluble sodium in the red mud can be separated step by step in the form of sodium-rich slag and NaAlSiO4 phase, no harm is caused to the environment and ecology, modification is not needed in the process, and harmless and resourceful treatment of the red mud is achieved. Red mud mixed with a coal-based reducing agent is added into a supergravity high-temperature reactor, fractional crystallization separation of the red mud is achieved through two-step heat preservation treatment and two-time supergravity separation, and finally the high alkalinity of the red mud is successfully eliminated.

The invention relates to the field of industrial waste gas purifying and particularly relates to an exhausting system for an industrial waste gas purifying device. The exhausting system comprises a spraying tank, a circulating pipe, a circulating water tank, a circulating controller, transmission wheels, a water return device, a sprayer and a support seat, wherein the circulating pipe is connectedand communicated to the lower end of the spraying tank, and the lower end of the circulating pipe is inserted into the lower end in the circulating water tank; the upper end of the sprayer is connected and communicated to the upper end of the circulating water tank, and the lower end of the sprayer is inserted into the spraying tank; the circulating controller is fixedly connected to the circulating water tank and is in transmission connection with the sprayer through the transmission wheels; the circulating water tank is fixedly connected to the support seat; and the circulating controller is in transmission connection with the water return device. According to the exhausting system, the effect spraying and dust removal of industrial waste gases can be realized, and liquid for spraying and dust removal can be efficiently and circularly utilized and can be filtered and purified after the spraying and the dust removal, so that the purifying effect to particle impurities in the industrial waste gases can be effectively improved.

The invention relates to the technical field of fluxing medium production, in particular to a fluxing medium production method based on waste salt resource utilization. According to the fluxing mediumproduction method based on waste salt resource utilization, firstly, extracting is carried out on sodium chloride, sodium sulfate and sodium carbonate from waste salt generated in industrial production, purifying and refining are carried out, preheating is carried out on raw materials, heating to 70 DEG C is carried out on a raw material storage box, the raw materials are sequentially mixed again, then heating to 200-280 DEG C is carried out on a mixing device, drying for 2.5-3 hours is carried out until the water content of the materials is lower than 0.3%, crushing is carried out on the materials again, screening is carried out on the crushed materials, screening is carried out by adopting 100 meshes, and finally, the sieved materials are packaged through a damp-proof packaging box andplaced in a dry place for storage, so that recycling and reusing are carried out on waste salt resources generated in the industry, recycling and purifying are carried out on available substances in the industrial waste salt, meanwhile, energy conservation and emission reduction are achieved, protecting is carried out on the ecological environment and underground water resources, and the production cost is reduced.

The invention discloses a composite solid waste pavement base binder and a preparation method thereof, and belongs to the technical field of road engineering. The composite solid waste pavement base binder is prepared by mixing pretreated alkaline ardealite powder, fly ash, slag powder and cement. The industrial waste phosphogypsum slurry raw material is subjected to alkaline pretreatment to obtain the alkaline phosphogypsum powder, the alkaline phosphogypsum powder is mixed with the solid waste such as the fly ash and the slag and the cement, and the mixture is applied to a semi-rigid base material to be used as a gelling binder, so that an effective utilization way of the industrial waste residue material is provided, and the utilization rate of the industrial waste residue material is increased. Moreover, the resource utilization rate of industrial waste residue materials can be increased, and the problem of environmental pollution caused by stockpiling and discharging of industrial waste residues is solved. And the prepared pavement base binder can improve the strength of the pavement base, reduce the shrinkage cracking effect of the pavement base, reduce the cement consumption, reduce the cost, and achieve the purposes of recycling solid wastes, and being economical and environment-friendly.

The invention discloses an energy-saving treatment device of industrial waste gas. The energy-saving treatment device comprises a waste gas collecting chamber, a spraying chamber and a waste gas purification chamber, wherein a gas inlet is formed in the waste gas collecting chamber; a gas outlet is formed in the tail end of the waste gas purification chamber. The energy-saving treatment device hasthe structural key points that cotton filter nets and an activated carbon adsorption net are arranged in the waste gas collecting chamber; a spherical spray head is arranged in the spraying chamber;a liquid storage groove is formed in the bottom of the spraying chamber; the waste gas purification chamber is provided with a power supply chamber, two exhaust fans, a collecting chamber, an ozone generation chamber and a drying net. The energy-saving treatment device has the beneficial effects that a circulation path of waste gas can be lengthened due to the cotton filter nets that are arrangedin a staggered manner; the reaction area of gas can be enlarged due to the corrugated type cotton filter nets, the corrugated type activated carbon adsorption net, bulges on the inner wall of the spraying chamber and the spherical spray head located in the center of the spraying chamber; the waste gas enters the ozone generation chamber for reaction, so that the peculiar smell of contained bacteria can be removed, and the emission standard can be achieved finally.

The invention provides an unattended industrial waste liquid treatment and water-hydrogen-electricity co-production system and method, the liquid inlet end of a steam generation device in the system is connected with a waste liquid storage box, the steam exhaust end of the steam generation device is connected with an inlet of a condensation flow channel of a steam condensation device, and a cooling waste liquid flow channel of the steam condensation device is communicated with the waste liquid storage box in a circulating mode; a condensation flow channel outlet of the steam condensation device is connected with an inlet of the clean water storage tank, an outlet of the clean water storage tank is connected with a water electrolyser, a hydrogen collection end of the water electrolyser is connected with the hydrogen storage tank, and the hydrogen storage tank is provided with a hydrogen supply port connected with a proton exchange membrane hydrogen fuel cell stack. The proton exchange membrane hydrogen fuel cell stack and a photovoltaic power generation device are both connected with an electrical storage device, the electrical storage device is used for supplying power to pumps, valves and self-control elements of the whole system, and the photovoltaic power generation device supplies power to the water electrolyser. According to the invention, industrial toxic waste liquid purification treatment and water-hydrogen-electricity co-production under unattended operation are realized, and good environmental and economic benefits are achieved.