Method for synthesizing lower alcohol by coke oven gas and secondarily producing natural gas and liquid ammonia
A technology for coke oven gas and low-carbon alcohol, which is applied in chemical instruments and methods, preparation/separation of ammonia, preparation of organic compounds, etc., can solve problems such as energy waste and environmental pollution, reduce production costs, and improve enterprise economy. benefits, social and environmental benefits, and the effect of improving utilization
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[0028] Example 1
[0029] The coking coal and air are fed into the coke oven through the oxygen generated by the air separation unit to obtain coke products and crude coke oven gas; the crude coke oven gas is compressed and enters the coke together with the purge gas separated by PSA (pressure swing adsorption) Furnace gas low-temperature methanol washing purification system, desulfurization treatment under the conditions of temperature -48℃ and pressure 4.2MPa to obtain H 2 S 2 S concentrated gas is desulfurized and recovered; the purified coke oven gas adopts the cryogenic separation technology of American Contes and Bokeeweiqi Company to separate CH at a temperature of -159℃ and a pressure of 4.0MPa 4 , Separated CH 4 Manufactured into LNG (liquefied natural gas) products;
[0030] Separate CH 4 The latter coke oven gas enters two low-carbon alcohol fixed-bed reactors connected in series, and the fixed-bed reactors are filled with MoS from DOW Chemical Company, USA 2 -M-K catalys...
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[0033] Example 2
[0034] The coking coal and air are fed into the coke oven through the oxygen generated by the air separation unit to obtain coke products and crude coke oven gas; the crude coke oven gas is compressed and enters the coke together with the purge gas separated by PSA (pressure swing adsorption) Furnace gas low-temperature methanol washing purification system, desulfurization treatment at a temperature of -50°C and a pressure of 4.5MPa to obtain H 2 S 2 S concentrated gas desulfurization recovery; purified coke oven gas is subjected to pressure swing adsorption to separate methane, using activated carbon as the adsorbent, at a temperature of 15℃, adsorption pressure of 4.8MPa, and desorption pressure of 0.6MPa to separate CH 4 , Separated CH 4 Make CNG (compressed natural gas) products;
[0035] Separate CH 4 The latter coke oven gas enters three series-connected low-carbon fixed-bed reactors. The fixed-bed reactors are filled with the Zn-Cr-K catalyst of Snam Compan...
Example Embodiment
[0038] Example 3
[0039] The coking coal and air are fed into the coke oven through the oxygen generated by the air separation unit to obtain coke products and crude coke oven gas; the crude coke oven gas is compressed and enters the coke together with the purge gas separated by PSA (pressure swing adsorption) Furnace gas tannin extract purification system performs desulfurization treatment to obtain H 2 S 2 S concentrated gas is desulfurized and recovered; the purified coke oven gas adopts the cryogenic separation technology of American Contes and Bokeeweiqi Company to separate CH at a temperature of -165℃ and a pressure of 5.0MPa 4 , Separated CH 4 Make LNG (liquefied natural gas) products;
[0040] Separate CH 4 The latter coke oven gas enters two low-carbon alcohol fixed-bed reactors connected in series, and the fixed-bed reactor is filled with Zn-Cr catalyst from Shanxi Institute of Coal Chemistry, Chinese Academy of Sciences. The reaction pressure is 8.0MPa, temperature is 33...
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