15 results about "Desorption" patented technology

The invention discloses a microwave excitation coal-bed gas desorption and seepage experimental device, and belongs to coal-bed gas desorption and seepage experimental devices. The microwave excitation coal-bed gas desorption and seepage experimental device comprises a tri-axial pressure device and a microwave generating device. The tri-axial pressure device comprises an upper gland, a lower gland, a barrel, a piston, a barrier, an upper pressure head and a lower pressure head, the microwave generating device comprises a microwave antenna, a waveguide tube, a resonant cavity, a magnetron and a controller, the upper gland and the lower gland are respectively arranged on the upper portion and the lower portion of the barrel, the piston is arranged inside the lower gland, the barrier is fixed onto the inner side wall of the lower gland, the lower pressure head is arranged inside the lower gland, and the microwave antenna is arranged on the inner side wall of the barrel; the upper pressure head is arranged in the barrel, and the waveguide tube, the resonant cavity, the magnetron and the controller are arranged on the outside of the barrel. The microwave excitation coal-bed gas desorption and seepage experimental device has the advantages that desorption and seepage functional tests can be carried out on coal, desorption and seepage laws of the coal under a microwave effect can be acquired, and reliable data can be provided for reasonably draining and comprehensively utilizing coal-bed gas resources.

The invention relates to the field of lithium carbonate preparation, in particular to a method for extracting lithium from brine to prepare battery-grade lithium carbonate by an ion exchange method. The method includes the steps of 1), removing magnesium by a coprecipitation method; 2), adsorbing to extract the lithium by a manganese adsorbent; 3), preparing the battery-grade lithium carbonate, namely adding alkaline liquor into a desorption solution in the step 2), regulating a pH value to 7-12, producing manganese hydroxide precipitate, filtering the manganese hydroxide precipitate, concentrating filtrate until the lithium content reaches 20-30 g/L, filtering to remove sodium chloride, adding a saturated sodium carbonate solution to react, filtering, and subjecting filter cakes to water scrubbing so as to obtain the battery-grade lithium carbonate. The method has the advantages that hydrotalcite is obtained after magnesium removal, so that the problem of recycling the magnesium in the brine is solved; the content of various impurity ions in the desorption solution can be controlled effectively by removing the magnesium and extracting the lithium by adsorption sequentially, and then the battery-grade lithium carbonate is prepared.

The invention discloses an organic waste gas purifying system and method for preventing the surface of an absorbing material from condensing and caking. The organic waste gas purifying system comprises an absorption tower, a desorption tower, a conveying device and an absorbing material preheating device, wherein the bottom of the absorption tower is provided with an organic waste gas inlet, the top of the absorption tower is provided with a purifying gas outlet, the inside of the absorption tower is separated into a plurality of layers by using a porous plate; an absorbing material falling from the top end of the desorption tower falls to a desorption heating part through an overflowing part, a desorption gas is introduced from the bottom of the desorption tower to be in contact with the absorbing material so as to desorb an organic gas absorbed in the absorbing material; the conveying device is used for conveying the absorbing material in a desorption tower storage tank to the top end of the desorption tower; and the absorbing material preheating device is arranged at the upstream of the desorption heating part. The organic waste gas purifying method comprises the steps of: additionally providing a preheating procedure before the desorption procedure is carried out; and preheating the absorbing material or/and preheating the organic waste gas in the preheating procedure. The system and method provided by the invention have the effect of preventing the surface of the absorbing material from condensing and caking, and can be used for preventing from incomplete desorption, air tower and blockage of related parts.

A drying device comprising a titano-alumino-phosphate with thermal management for the more efficient drying of objects and appliances, and its production. Further, a drying method for obtaining dried objects and appliances, as well as a method for regeneration accompanied by the desorption of water from water-containing titano-alumino-phosphate.

The invention provides a method for recovering gold from a printed circuit board of a waste mobile phone. The method comprises the following steps that the gold in a gold leaching liquid of the printed circuit board of the waste mobile phone is adsorbed by adopting an adsorbent so as to obtain gold-loaded carbon, wherein the adsorbent is selected from biochar or iodine-loaded biochar; and the gold-loaded carbon is subjected to desorption, and then a desorption solution is electrolyzed so as to obtain the gold. According to the method, after gold leaching is carried out on the printed circuit board of the waste mobile phone, the iodine-loaded biochar is adopted for adsorption, liquid gold is concentrated, then the gold can be recovered through electrolysis, meanwhile, the gold leaching liquid (iodine) can be recovered, so that the production cost can be lowered, and the resource utilization efficiency can be improved; modification is carried out on the biochar by using an ethanol solution of iodine so as to prepare the iodine-loaded carbon, so that the gold adsorption efficiency can be improved, and meanwhile, the utilization rate of the iodine can be increased; and the biochar prepared from agricultural waste is used for adsorbing the gold, so that the waste can be recycled, the production cost can be lowered, and the energy consumption can be reduced.

The invention relates to a method for gas purification, and in particular provides a catalyst used in selective oxidative desorption of carbon monoxide in high-concentration hydrogen and a preparation method for the catalyst and a using method for the catalyst. The catalyst comprises a carrier which is loaded with an active component and aids, wherein the active component is Pt, and the aids is one or a combination of two of Zn, Cu, La, Ce, Pr, Fe, Sn and Co; and the carrying capacity of the active component is 0.01 to 0.1 weight percent of the catalyst, and the carrying capacity of the aids is 0.5 to 5 weight percent of the catalyst. By the catalyst, the carbon monoxide can be removed from the hydrogen at the temperature of between 100 and 200 DEG C, the reaction airspeed is 1,000 to 15,000 h<-1>, the desorption accuracy of CO can be less than 1 ppm or 10 ppm or 100 ppm according to requirements, and the content of O2 at an outlet is less than 1 ppm.

The invention relates to the technical field of air purification, and more particularly relates to an air purification device and method. The air purification device includes a housing and an air inlet fan, a molecular sieve purification assembly, an air outlet assembly, and a molecular sieve circulation assembly arranged in the housing; the air inlet fan and the air outlet assembly are respectively arranged on the two sides of the molecular sieve purification assembly; the air inlet fan is provided with a first air inlet and a first air outlet for blowing air to the molecular sieve purification assembly, and the purified air is discharged through the air outlet assembly; the molecular sieve purification assembly and the molecular sieve circulation assembly are connected to form a molecular sieve circulation loop for molecular sieve heating desorption and cooling. The device and the method of invention can effectively remove VOC in the exhaust gas to reach the effect of air purification, the purified air can be recycled to achieve the effect of zero discharge, the heat in the waste heat air can be recycled, so that better energy-saving and environmental protection properties are realized; in addition, the operation is simple, the investment and operation costs are low, and good practicability and applicability are realized.

The invention discloses a Zr-Fe alloy for tritium storage and a preparation method thereof. The chemical formula of the alloy is Zr2-xTixFe1-y-zNiyCoz, wherein x, y and z represent the atomic ratios of Ti, Ni and Co replacing Zr and Fe correspondingly, x ranges from 0.01 to 0.05, y ranges from 0.01 to 0.05 and z ranges from 0.01 to 0.03. The preparation method of the Zr-Fe alloy comprises the following steps that (1) preparation is carried out according to the chemical formula, a vacuum non-consumable electric-arc furnace is adopted for carrying out turnover smelting 3-5 times, and a cast ingot is prepared; and (2) the smelted cast ingot is heated again into a smelted state, magnetic stirring is carried out for 2-5 min. The alloy is hydrogen storage alloy low in balance pressure, and has the beneficial effects that the room temperature balance pressure level is lower than 1 Pa, the hydrogen (tritium) adsorption and desorption rate is high, the cycle life is long, hydrogen induced disproportionation is resisted, and the hydrogen (tritium) storage capacity is large. In addition, the preparation method of the Zr-Fe alloy is easy to operate, easy to achieve and high in efficiency, andcompared with a common ZrCo alloy and ZrNi alloy, the cost is lower.

The invention relates to a long-cycle high-rate aqueous sodium-manganese battery. Specifically, the long-cycle high-rate aqueous sodium-manganese battery is composed of a carbon electrode, a diaphragmand a sodium salt + manganese salt/sulfuric acid mixed electrolyte. The reaction of the battery refers to that the positive electrode performs a manganese ion (Mn2+) reversible conversion reaction, and the negative electrode performs a sodium ion (Na+) adsorption and desorption reaction. The beneficial effects of the battery are as follows: the system integrates the advantages of the battery anda supercapacitor, and the advantages of the positive electrode (the conversion reaction) and the negative electrode (adsorption and desorption reaction), so that an optimized electrochemical energy storage system is realized. The system has the characteristics of low cost and safety, and has the advantages of adjustable capacity, high rate performance, high cycle performance and the like.

The invention provides an active carbon recovery apparatus, which comprises a tank, a filtration plate and an ultrasonic wave generator, wherein the filtration plate and the ultrasonic wave generatorare arranged in the tank, and a plurality of vibration sieves are arranged inside an active carbon particle holding space above the filtration plate. According to the present invention, through the compounding effect of the stirring device and the vibration sieves, the ultrasonic wave generator can act on all the active carbon so as to improve the desorption efficiency of the active carbon and achieve the rapid regeneration of the active carbon.

The invention discloses a method and device for measuring performances of a gas adsorbent material with a gravimetric method. The device comprises an adsorption gas generation unit and an inlet/outlet pipeline connected with the adsorption gas generation unit, wherein a pipeline circuit is arranged on the inlet/outlet pipeline of the adsorption gas generation unit; the pipeline circuit is provided with a weight measurement unit; and the inlet/outlet pipeline of the weight measurement unit is further provided with a pipeline circuit. The method comprises the following steps: when the adsorption gas enters the adsorption gas generation unit, switching on a valve and measuring gas temperature and concentration of the inlet/outlet pipeline; a crank connecting rod mechanism in the weight measurement unit is used for expanding the inlet/outlet pipeline and a fixing piece of an inlet/outlet pipeline connection plate; a suspension type micro balance is used for continuously measuring the weight of an adsorption material filling part; and the measurement is circulated. The adsorption or desorption performance of the adsorbent material is directly measured by using the gravimetric method. The adsorption or desorption performance of the adsorption material can be accurately and directly measured by adopting weight measurement in a certain period of time.

The invention discloses an oil and gas adsorption tower packing sampling device. The bottom of the left side of an adsorption tower is an intake pipe, the top of the right side is an exhaust pipe, thebottom of the right side is a desorption pipe, an intake sampling pipe is connected to the side surface of the intake pipe, the side surface of the exhaust pipe is connected to the exhaust sampling pipe, a feed port is formed in the top of the adsorption tower, a waste outlet is formed in the bottom, a discharge port is communicated with the lower end of the front side of the adsorption tower, asampling column is arranged inside the adsorption tower, and the sampling column includes an external isolation net and a sampling cylinder embedded in the isolation net. The device has the advantagesof simple structure, low preparation cost and convenient operation, convenient sampling of the sampling cylinder facilitates sampling of an adsorbent in the adsorption tower, and the sampling cylinder can sample the adsorbents of different height layers in the adsorption tower, thereby obtaining the adsorption and desorption performance curves of the adsorbents at different heights; the samplingcylinder can track a adsorption zone of the adsorbent at any time to avoid problems such as poor oil and gas treatment and the like caused by adsorption penetration.