Device and method for catalytically decomposing coal substances and separating coal substances at high temperatures
A catalytic decomposition and substance technology, applied in gasification process, tar processing, granular/powder fuel gasification, etc., to achieve the effect of reducing production cost, reducing excessive dependence and improving economic benefits
Active Publication Date: 2016-03-23
EAST CHINA ENG SCI & TECH
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[0012] The purpose of the present invention is to provide a device and method for catalytic decomposition and high-temperature separation of coal substances, so as to solve the problems existing in existing coal substance thermal decomposition and separation technologies
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[0039] Such as figure 1 , figure 2 As shown, a device for catalytic decomposition and high-temperature separation of coal materials, including a coal powder preparation system 1, a staged reformer 2, a cyclone separator 3, a precision dust collector 4, a waste heat boiler 5, a crude gas quenching tower 6, an oil Separation tower 7, coke powder tank 8, circulating gas compressor 9, slag breaker 10, ash tank 11, steam drum 12, heating furnace 13, three sets of heat exchangers 14-1, 14-2, 14-3, Buffer tank 15, three sets of pumps 16-1, 16-2, 16-3, gas-liquid separator 17, in which:
[0040] The staged reformer 2 has two upper and lower reaction chambers 2-1, and the upper and lower reaction chambers 2-1 and 2-2 in the staged reformer 2 are connected in series through the throat pipe 2-3. A plurality of raw coal inlets 2-4 are arranged on the furnace wall of the staged reformer 2 corresponding to the upper reaction chamber 2-1, and a plurality of semi-coked coal inlets 2-4 are ...
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The invention discloses a device and a method for catalytically decomposing coal substances and separating the coal substances at high temperatures. The method includes mixing dried and ground pulverized coal and powder catalysts, and then conveying the pulverized coal and the powder catalysts into a sectional converter in a pressurized manner by the aid of gas; feeding the coal and catalyst powder into an upper section of the sectional converter and feeding coke powder, oxygen and steam into a lower section of the sectional converter; enabling the coal, the catalyst powder, the coke powder, the oxygen and the steam to respectively carry out conversion reaction in the sectional converter to ultimately generate semi-coke, coal gas and oil products; discharging three-phase high-temperature products from the upper portion of the sectional converter and sequentially removing the coke powder and tar in the three-phase high-temperature products by means of cyclone separation, fine filtration and solvent oil chilling step by step; returning the separated coke powder into the sectional converter to be used as a gasification reaction material; absorbing solvent oil in the oil products in the coal gas, separating the solvent oil by the aid of an oil separation tower and then recycling the solvent oil. The dried and ground pulverized coal is a raw material. The device and the method have the advantages that solid and liquid two-phase products in the crude coal gas are subjected to catalytic decomposition reaction and high-temperature separation, technologies are advanced, the yield of the products is high, and the device and the method conform to concepts of the modern coal chemical industry and accordingly have extremely broad application prospects.
Description
technical field [0001] The invention relates to the field of thermal decomposition of coal substances and high-temperature separation of gas-solid-liquid three-phase media, in particular to a device and method for catalytic decomposition and high-temperature separation of coal substances. Background technique [0002] Coal is the main energy source in my country, accounting for about 70% of the total primary energy consumption for a long time, and will still occupy a dominant position in my country's energy structure for a long period of time in the future. It is predicted that my country's coal resource reserves are more than 5 trillion tons, and the proven reserves reach 114.5 billion tons. Among them, low-rank coal reserves account for more than 55% of the country's proven coal reserves, reaching 566.2 billion tons, of which lignite accounts for 12.7%, and low-grade bituminous coal accounts for 42.5%. Low-rank coal is mainly distributed in Northwest my country, North Chi...
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IPC IPC(8): C10J3/64C10J3/48C10J3/46C10J3/84C10J3/86C10C1/00
CPCC10C1/00C10J3/46C10J3/48C10J3/64C10J3/84C10J3/86C10J2300/0936C10J2300/0986C10J2300/1823
Inventor 安承东
Owner EAST CHINA ENG SCI & TECH