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Technology used for desulphurization deamination of coke oven gas

A technology for coke oven gas and deamination, which is applied in the petroleum industry, ammonium sulfate, combustible gas purification, etc., can solve the problems of complex process, unsatisfactory economy, high equipment and operating costs, and achieve the effect of improving economic performance.

Active Publication Date: 2013-12-25
BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the coke oven gas treatment process in the prior art, it is not only necessary to set up two sets of processes for desulfurization and deamination, but also to set up a separate process for the preparation of desulfurizer. The whole process is relatively complicated, and the cost of equipment and operation is high. When treating coke oven gas with desulfurization method, when the ratio of ammonia to sulfur in coke oven gas is small, additional ammonia water needs to be supplemented, and its economic efficiency is not ideal. The present invention provides a method for desulfurizing coke oven gas, The preparation of ammonium sulfate is organically combined with the preparation of desulfurizer, and the coke oven gas desulfurization and deammoniation process with better economic performance

Method used

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  • Technology used for desulphurization deamination of coke oven gas
  • Technology used for desulphurization deamination of coke oven gas

Examples

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Effect test

Embodiment 1

[0039] The flow chart of the process for coke oven gas desulfurization and deammonification described in this embodiment is as follows figure 1 shown, including:

[0040] (1) Pass the coke oven gas from the bottom into the desulfurization tower, the temperature of the desulfurization tower tank is 30°C; the top of the desulfurization tower injects desulfurizer through the nozzle to rinse the coke oven gas, and the desulfurization The agent is an amorphous iron oxyhydroxide slurry, and the concentration of the amorphous iron oxyhydroxide in the slurry is 10wt%.

[0041] (2) The desulfurized coke oven gas in step (1) overflows from the top of the desulfurization tower, and then passes the desulfurized coke oven gas into the ammonia absorption tower, and the coke oven gas and sulfurous acid sulfurous acid sprayed on the top of the ammonia absorption tower The iron solution reacts to remove the ammonia in the coke oven gas, wherein the concentration of the ferrous sulfate solutio...

Embodiment 2

[0045] The flow chart of the process for coke oven gas desulfurization and deammonification described in this embodiment is as follows figure 2 shown, including:

[0046] (1) Pass the coke oven gas from the bottom into the desulfurization tower, the temperature of the desulfurization tower tank is 50°C; the top of the desulfurization tower injects desulfurizer through the nozzle to rinse the coke oven gas, and the desulfurization The agent is an amorphous iron oxyhydroxide slurry, and the concentration of the amorphous iron oxyhydroxide in the slurry is 15wt%.

[0047] (2) The desulfurized coke oven gas in step (1) overflows from the top of the desulfurization tower, and then passes the desulfurized coke oven gas into the ammonia absorption tower, and the coke oven gas and sulfurous acid sulfurous acid sprayed on the top of the ammonia absorption tower The iron solution reacts to remove the ammonia in the coke oven gas, wherein the concentration of the ferrous sulfate solut...

Embodiment 3

[0051] The flow chart of the process for coke oven gas desulfurization and deammonification described in this embodiment is as follows figure 2 shown, including:

[0052] (1) Pass the coke oven gas from the bottom into the desulfurization tower, the temperature of the desulfurization tower tank is 40°C; the top of the desulfurization tower injects desulfurizer through the nozzle to rinse the coke oven gas, and the desulfurization The agent is an amorphous iron oxyhydroxide slurry, and the concentration of iron oxyhydroxide in the slurry is 15wt%.

[0053] (2) The desulfurized coke oven gas in step (1) overflows from the top of the desulfurization tower, and then passes the desulfurized coke oven gas into the ammonia absorption tower, and the coke oven gas and sulfurous acid sulfurous acid sprayed on the top of the ammonia absorption tower The iron solution reacts to remove the ammonia in the coke oven gas, wherein the concentration of the ferrous sulfate solution is 1.0mol / ...

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Abstract

A disclosed technology used for desulphurization deamination of coke oven gas comprises: (1) utilizing FeOOH as a desulfurizer to perform desulphurization on the coke oven gas; (2) reacting coke oven gas which is subjected to desulphurization in the step (1) with a ferrous sulphate solution to removing nitrogen in the coke oven gas, controlling the temperature at 20-40 DEG C and a pH value of the solution at 5-9 during reaction, wherein a solution containing ammonium sulfate and fougerite is generated; (3) filtering the solution containing ammonium sulfate and fougerite and generated in the step (2), oxidizing fougerite obtained by filtering to generate FeOOH; and (4) taking FeOOH obtained by oxidization as the desulfurizer in the step (1). According to the technology, desulphurization of the coke oven gas, preparation of ammonium sulfate and preparation of the desulfurizer are combined together, and the byproduct generated during preparation of ammonium sulfate in the field of desulphurization deamination of the coke oven gas is utilized and helps to realize preparation of the desulfurizer, so that the desulfurizer does not need buying additionally, and the technology is improved in economic performance.

Description

technical field [0001] The invention belongs to the field of gas purification, and in particular relates to a process for desulfurization and deammonization of coke oven gas. Background technique [0002] Coke oven gas is an important by-product produced in the coking process. Coke oven gas is a valuable fuel resource. However, during the coking process, about 30-35% of the sulfur in the raw coal will be converted into H 2 S and other sulfides, and HCN and NH contained in coke oven gas itself 3 Together, they constitute the toxic and harmful impurities in the gas, among which the alkaline gas NH 3 Very corrosive to pipeline equipment, acid gas H 2 In addition to being highly corrosive, S and HCN are also highly toxic, and when coke oven gas is used as fuel, H 2 S and its combustion product SO 2 Both are poisonous, so coke oven gas must be purified before being used as fuel, that is, deammonization and desulfurization of coke oven gas. [0003] The methods for treating ...

Claims

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Application Information

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IPC IPC(8): C10K1/10C01G49/02C01C1/24
Inventor 林科刘振义王立贤
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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