Process device for deep purification and desulfurization of fuel gas
A technology of deep purification and process equipment, applied in the direction of fuel, gas fuel, chemical industry, etc., can solve the problems of complex process, large floor area, large number of equipment, etc., and achieve the effect of convenient transportation and good environmental performance
Inactive Publication Date: 2020-01-14
北京奥博斯工程技术有限公司
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[0009] Fourth, the existing fuel gas amine liquid desulfurization device has a complex process, a large number of equipment, and a large floor area, which cannot be skid-mounted. It is uneconomical for the deep desulfurization of fuel gas for a single-device heating furnace in an oil refinery
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[0031] Further combined with the following figure 2 The present invention is further described in detail.
[0032] Such as figure 2 As shown, the hydrogen sulfide content from the fuel gas pipeline network is 50mg / Nm 3 The fuel gas is self-pressurized to the lye desulfurization tower, and the fuel gas flow rate is 3500Nm 3 / h, the specification of the lye desulfurization tower adopts φ1.2x8m, with 4m high packing, 0.4m foam breaking net, 0.2m high grille and two-layer spray distributor, the fuel gas in the lye desulfurization tower Countercurrent contact with the regenerated lye entering the top of the tower, the hydrogen sulfide in the fuel gas is absorbed, and the hydrogen sulfide content in the fuel gas at the top of the tower is reduced to 5mg / Nm 3. Hydrogen sulfide and lye react to form sodium hydrosulfide, and the lye containing sodium sulfide to be produced is self-pressurized to the lye regeneration tower. The specification of the lye regeneration tower adopts φ2...
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The invention belongs to a process device for deep purification and desulfurization of fuel gas in the petrochemical industry. The device comprises a fuel gas alkali liquor desulfurization tower, an alkali liquor regeneration tower, a sulfur paste liquid centrifugal dehydrator and related auxiliary equipment, wherein the alkali liquor desulfurization tower is equipment for countercurrent contact mass transfer and heat transfer of fuel gas and alkali liquor; the alkali liquor regeneration tower is equipment for oxidation regeneration of the alkali liquor; the sulfur paste liquid centrifugal dehydrator is equipment for dehydrating elemental sulfur paste liquid generated by the alkali liquor regeneration tower; and standardized design, modular manufacturing and skid-mounted installation are adopted for the equipment of the device. The invention mainly relates to an oil refining and chemical engineering device for overcoming the problem that fuel gas has high sulfur content and acid dew point corrosion limits further reduction in exhaust gas temperature during the improvement of the efficiency of a heating furnace. By adopting the device, the sulfur content of fuel gas is greatly reduced, which is favorable for improving the heating efficiency of the heating furnace. The device does not discharge waste gas, waste liquid and waste residues, and is environment-friendly.
Description
technical field [0001] The invention belongs to a process device for deep purification and desulfurization of fuel gas in the petrochemical industry, and mainly relates to an oil refining and chemical device in which the sulfur content of the fuel gas is relatively high, in order to improve the efficiency of the heating furnace, and the acid dew point corrosion limits the further reduction of the exhaust gas temperature . Background technique [0002] In the process of petroleum refining and petroleum processing, a large amount of dry gas is produced as a by-product. After the hydrogen sulfide is removed by amine liquid (MDEA), a small part of the dry gas is used as raw material for hydrogen production or chemical raw material, and most of it is used as fuel gas for heating furnace. Due to the limitations of amine liquid (MDEA) desulfurization process technology and the limitation of operating costs, the sulfur content of dry gas after amine liquid desulfurization is general...
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IPC IPC(8): C10L3/10
CPCC10L3/103Y02P20/10
Inventor 杨根长
Owner 北京奥博斯工程技术有限公司