13 results about "Coal tar" patented technology

The invention discloses a directional pyrolysis method of combustible wastes. The method comprises the following steps: putting the combustible wastes into a pyrolysis furnace; carrying out air replacement on the pyrolysis furnace, namely feeding nitrogen into the pyrolysis furnace and discharging air from the pyrolysis furnace; maintaining the nitrogen pressure in the pyrolysis furnace within 0.05MPa to 0.1MPa; starting the heating to enter pyrolysis states, namely entering different pyrolysis steps according to different pyrolysis demands for the combustible wastes, wherein the different pyrolysis demands comprise the following steps: obtaining pyrolytic carbon of the combustible wastes, obtaining a pyrolytic tar of the combustible wastes and obtaining a pyrolytic combustible gas of the combustible wastes. According to the method, the combustible wastes are directionally pyrolyzed into the organic carbon, the high-calorific-value gas and the tar by regulating the pyrolysis temperature, the pyrolysis pressure, the heating rate and the catalyst adding mode through the utilization of calorific values of the combustible wastes, so that the utilization rate of the combustible solid wastes is greatly improved; the air is isolated, so that the combustion of the carbon and the volatilization of heavy metals and chlorine are reduced. Thus, the discharge of dioxin is below 0.1ng/Nm<3>.

The present invention provides a biomass gasification furnace frees of crash, humidity resistant, having no tar, anti-burn-out. It is a flammable gas updaught household gasification furnace converted by the luminous burning pyrolytic reaction utilizing eagro-sylvo-pastoral waste biomass. The invention can easily compress pudgy biomass and pack in column bale fuel via setting opening feed inlet, arranging biomass binder, convenient to put in the furnace, needless being crashed; vapor continuously steamed is chiling and bead slides in the water tank along the inclined edge and exhaust accompanied by return tube via setting tapered condensed water collecting furnace lid, this resolving the problem of unburning when the water content of the biomass is higher; the residual tar of the high temperature fuel gas is further cracked via setting fuel gas guide port in the burning high temperature region and importing in the setted high temperature fuel gas detention timelag loop; The effects of unbiassed burning, non carbon, timely blanking and no empty burning are achieved by setting ring rotary inlet device and axial rotary driving dust blanking in the burning region.

The invention discloses a preparation method of a hydrogenation catalyst. The preparation method comprises the following steps: mixing original clay with a weak acid and a dispersant, then carrying out a hydrothermal treatment on the mixture so as to obtain modified clay; using an acidic solution containing aluminum and an alkaline solution containing aluminum to carry out a flue-forming reaction in the modified clay slurry through a combined method of a pH swing method and a parallel-flow method; after the glue-forming process, carrying out processes of filtering, washing, and drying so as to obtain alumina dry glue, then subjecting the alumina dry glue to processes of forming, drying, and burning so as to obtain the catalyst carrier, and loading a hydrogenation active metal component on the catalyst carrier so as to obtain the hydrogenation catalyst. The catalyst prepared by the method mentioned above has the advantages of concentrated pore distribution and proper acidity, and is especially suitable for preparing a coal tar hydro-upgrading catalyst.

The invention discloses a coal tar all-fraction liquid-phase hydrogenation system and method. The system comprises a liquid-phase reactor and a hydrogen dissolver, wherein an inlet of the hydrogen dissolver is connected with a coal tar pretreatment device and a hydrogen conveyor; an outlet of the hydrogen dissolver is connected to a lower end inlet of liquid-phase reactor; a reaction generation product outlet on the top end of the liquid-phase reactor is connected with a hot high-pressure separator; one outlet of the hot high-pressure separator is connected with a lower end inlet of the liquid-phase reactor through a circulating pump; the liquid-phase reactor comprises a liquid-phase reactor wall, hydrogen supplementing devices and a plurality of catalyst bed layers; the plurality of catalyst bed layers are arranged inside the liquid-phase reactor from bottom to top; and each hydrogen supplementing device is arranged between every two adjacent catalyst bed layers and communicated with the hydrogen conveyor. The coal tar all-fraction liquid-phase hydrogenation system and method have the advantages of reasonable design, reliable technical process and stable safety performance, greatly enhance the inner space utilization ratio of the liquid-phase reactor, reduce the equipment investment, and effectively enhance the reaction product yield.

The invention discloses a coal pyrolysis device, and particularly relates to a coil pipe type coal pyrolysis device. The coil pipe type coal pyrolysis device comprises a smoke gas inlet, an inner heat insulation layer, an annular narrow cavity, an outer heat insulation layer, a casing and a smoke gas outlet, wherein the annular narrow cavity is defined by the inner heat insulation layer and the outer heat insulation layer; the coil pipe type coal pyrolysis device also comprises a heat exchange coil pipe group, a coil pipe inlet and a coil pipe outlet; the heat exchange coil pipe group is positioned in the annular narrow cavity and is communicated with the coil pipe inlet and the coil pipe outlet. Through the design of installing the heat exchange coil pipe group in the annular narrow cavity in the heat insulation layer and the adoption of an indirect heat exchange form, a product generated through pyrolysis does not directly contact or mix with high-temperature smoke, so that high-temperature semicoke and pyrolysis gaseous products can be conveniently separated; the concentrations of tar, hydrogen and methane in the gaseous products are high; high economic benefits are realized.

The invention provides a flame-retardant ethylene propylene diene monomer, and relates to the technical field of high molecular materials. The flame-retardant ethylene propylene diene monomer is prepared from the following composition raw materials: 80 to 100 parts of ethylene propylene diene monomers, 20 to 25 parts of aluminum silicate fiber cotton, 23 to 28 parts of ore slag fiber cotton, 12 to 18 parts of sepiolite fiber cotton, 3 to 7 parts of vermiculite, 14 to 19 parts of expanded perlite, 8 to 13 parts of fiber cement boards, 3 to 8 parts of fiber enhanced calcium silicate boards, 5 to 12 parts of pentaerythrite oleate, 4 to 8 parts of abietic resin, 5 to 9 parts of boric acid, 11 to 15 parts of coronene, 6 to 10 parts of rhodium, 11 to 13 parts of asphalt coal tar, 9 to 16 parts of plasticizers and 17 to 22 parts of light stabilizers. The flame-retardant ethylene propylene diene monomer has the beneficial effects that the price of the raw materials is cheap; the manufacturing process is simple; the flame retardant effect of the prepared ethylene propylene diene monomer is good; no harm is caused on human bodies in the production process.

The invention discloses a gas liquor purification treatment system after coal gasification. The system comprises a gas liquor main, which is connected to a cold source inlet of a third heat exchanger.The cold source outlet of the third heat exchanger is connected to a feed inlet of a stripping tower through a decompression separation unit, which is also connected to a tar connecting unit. The decompression separation unit is used for removing tar in the gas liquor. The stripping tower is used for removing impurity components in the gas liquor. A gas liquor outlet of the stripping tower is connected to a hot source inlet of the third heat exchanger through a pipeline. The third heat exchanger is used for preheating low-temperature gas liquor of the gas liquor main through high-temperaturegas liquor at the outlet of the stripping tower. A hot source outlet of the third heat exchanger is connected to a sewage treatment tank through a fourth heat exchanger. By the system, contents of COD, ammonia and henol in the gas liquor are effectively reduced, and the energy consumption of the subsequent water treatment is greatly reduced, the gas liquor is reused, and consumption of industrialwater during the production process is lowered.