Multi-segment fast pyrolytic reaction system and method
A pyrolysis reaction, multi-stage technology, applied in special forms of dry distillation, petroleum industry, coke oven, etc., can solve the problems of unusable powder materials, huge condensation recovery system, low calorific value of pyrolysis gas, etc., to reduce equipment Maintenance costs, achieving continuity, reducing the effect of process flow
Pending Publication Date: 2018-03-06
北京恒丰亚业科技发展有限公司
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Problems solved by technology
Compared with the existing pyrolysis technology, pulverized coal rapid pyrolysis technology solves the problem that powdery materials cannot be used. The pulverized coal rapid pyrolysis technology mainly has two heating methods: gas heat carrier and solid heat carrier, but the gas is used as the heating method. The furnace type of heat carrier is difficult to further popularize and demonstrate due to problems such as the huge condensation recovery system, low calorific value of pyrolysis gas, and low tar yield; the furnace type with solid as heat carrier has uniform mixing and separation of raw materials and heat carrier and other issues, which limit its further development
Method used
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Embodiment
[0070] Embodiment: This process is raw material with the coal of Shaanxi Yulin Coal Mine factory district, and particle size is as shown in Table 1, utilizes pyrolysis furnace to carry out pyrolysis process to it, pre-dried pulverized coal, after drying Yulin pulverized coal The basic coal data are shown in Table 2, and the gas composition analysis is shown in Table 3.
[0071] Table 1: Yulin Coal Particle Size Distribution
[0072]
[0073] Table 2: Yulin Coal Basic Data
[0074]
[0075] The height of the pyrolysis furnace is 6 meters, and the processing capacity is 15kg / h. In order to cooperate with the 80% load operation of the pulverized coal boiler for 5000 hours, the pressure in the furnace is 0.4MPa; the temperature of the regenerative radiant tube is set to 1000 degrees, and the final semi-coke 43.5 tons, 24 tons of pyrolysis gas, 7.5 tons of pyrolysis oil and water; compared with the same operating conditions under normal pressure, the total yield of semi-coke...
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Abstract
The invention belongs to a multi-segment fast pyrolytic reaction system and method. The system comprises a feed system, a pyrolyzing furnace and a semicoke processing system, wherein the feed system comprises a pulverized coal storage bin, a pulverized coal locking hopper and a pulverized coal feed tank which are connected sequentially; the pyrolyzing furnace and a feed outlet of the pulverized coal feed tank are connected, and the pyrolyzing furnace comprises a reduction furnace body and a heat storage type radiation tube, wherein the reduction furnace body comprises an upper-segment furnacebody and a lower-segment furnace body; the diameters of the upper-segment furnace body and the lower-segment furnace body are different, and the semicoke processing system comprises a coal pulverizingsystem and a pulverized coal boiler, wherein the coal pulverizing system is connected with a semicoke locking hopper arranged at the bottom part of the pyrolyzing furnace, and the pulverized coal boiler is connected with the coal pulverizing system. The multi-segment fast pyrolytic reaction system reduces the coking and abrasion of the coal and can process the pulverized coal with different graindiameters; in addition, the high-temperature semicoking adopts the form of combination with the pulverized coal boiler, so that the use ratio of the electric energy is improved, the energy is saved,and the environment is protected.
Description
technical field [0001] The invention belongs to the technical field of medium and low temperature pyrolysis treatment of coal chemical industry and fossil fuel, and relates to a fast pyrolysis reaction process of carbon-containing fuel, in particular to a multi-stage fast pyrolysis reaction system and method. Background technique [0002] The status quo of my country's energy structure is rich in coal, poor in oil, and low in gas. Today's world's oil and gas resources are gradually decreasing and increasingly scarce. The shortage of oil and gas resources in my country is particularly serious, and a large number of oil and gas resources rely on imports. The lack of oil and gas resources seriously restricts my country's economic and social development. At the same time, the burning of a large amount of fossil fuels has brought serious environmental problems, such as dust, PM2.5, acid rain, and greenhouse gases. Vigorously develop coal-to-oil, coal-to-gas technology, pyrolysis,...
Claims
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IPC IPC(8): C10B53/04C10B57/10
CPCC10B53/04C10B57/10
Inventor 吴道洪张宏伟陈水渺彭丽齐洪民
Owner 北京恒丰亚业科技发展有限公司