A method for treating ammonium sulfate mother liquor in activated coke desulfurization process

Abstract

The invention discloses a method for disposing ammonium sulfate mother liquor in an activated coke desulfurization process, and relates to the technical field of steel smelting. The method for disposing ammonium sulfate mother liquor in an activated coke desulfurization process comprises a spray-type saturator, a full-flow tank, a mother liquor tank and a mother liquor venting tank; the output end of the spray-type saturator is connected to the input end of the full-flow tank, the output end of the full-flow tank is connected to the input end of the spray-type saturator through a small mother liquor pump, and the output end of the mother liquor tank is connected to the input end of the full-flow tank through a mother liquor replenishment pump. The method for disposing ammonium sulfate mother liquor in an activated coke desulfurization process solves the reason why foam is generated after the saturator receives the mother liquor of the activated coke process. The method has obvious effect on removing foam from the mother liquor, is simple to implement, and has low labor intensity for workers. It solves the problem that a large amount of foam is generated in the saturator system after receiving the ammonium sulfate mother liquor generated by the activated coke process, avoids blockage, safety, environmental protection, and quality problems, and ensures that the saturator system can operate normally after receiving a large amount of mother liquor from the activated coke desulfurization process.

Description

Technical Field

[0001] The invention relates to the technical field of steel smelting, and in particular to a method for disposing ammonium sulfate mother liquor in an activated coke desulfurization process. Background Art

[0002] The saturator system for preparing ammonium sulfate in the prior art has a process of self-circulating spraying inside the saturator to remove ammonia in the coal gas, and the excess mother liquor enters the mother liquor storage tank, which is a closed system. Due to the presence of tar and coal powder in the coal gas, the accumulation of tar and coal powder in the saturator system will cause foaming in the system, especially when the saturator system receives other external solutions, this scene is more obvious. If the saturator foam is not eliminated in time, it will lead to excessive system resistance, affect the quality of ammonium sulfate products, and cause environmental accidents due to foam overflow, which will have a bad impact on the system.

[0003] After searching, there is no relevant patent for the keyword "activated coke desulfurization process mother liquor".

[0004] After searching, there are 5 related patents for the keyword "saturator mother liquor", among which the "A filtering device for a saturator mother liquor pump and its use method [invention]" (application number CN202310199771.7) under review is closest to the present method, but its method is only a pump filter, the purpose of which is to solve the blockage of the pump and nozzle, which is inconsistent with the present method.

[0005] After searching, the keyword "mother liquor foam" has 1 related patent, "A method for generating mother liquor foam slag from stainless steel smelting using electric furnace and dephosphorized molten iron [invention]", which is in an invalid state and involves the field of stainless steel smelting process using electric furnace and dephosphorized molten iron, which is inconsistent with this method.

[0006] After searching, the keyword "ammonium sulfate foam" has 1 related patent, which is an oxidation section overflow circulation tank pipeline that is convenient for sewage discharge [utility model]. It is in an invalid state, and it is an oxidation section overflow circulation tank pipeline that is convenient for sewage discharge, which is inconsistent with this method. Summary of the invention

[0007] 1. Technical issues to be solved

[0008] In view of the deficiencies in the prior art, the present invention provides a method for disposing ammonium sulfate mother liquor in an activated coke desulfurization process, which solves the problems existing in the prior art.

[0009] (II) Technical solution

[0010] To achieve the above objectives, the present invention is implemented through the following technical solutions: a method for disposing ammonium sulfate mother liquor in an activated coke desulfurization process, comprising a spray saturator, a full flow tank, a mother liquor tank and a mother liquor vent tank;

[0011] The output end of the spray saturator is connected to the input end of the full flow tank, the output end of the full flow tank is connected to the input end of the spray saturator through a small mother liquid pump, the output end of the mother liquid tank is connected to the input end of the full flow tank through a mother liquid replenishment pump, the output end of the mother liquid drain tank is connected to the input end of the mother liquid tank through a self-priming pump, and the mother liquid drain tank is connected to an accident pool;

[0012] The specific operations of the improvement are as follows:

[0013] When in use, a portion of the mother liquor is cut off from the saturator mother liquor replenishment pipeline and enters the venting system. When the venting system is returned, it is processed and a filter is added to forcefully filter the circulating liquid to remove impurities in the system. The filtered mother liquor returns to the mother liquor replenishment system.

[0014] Preferably, the venting system includes a sedimentation tank, the output end of the self-priming pump is connected to the sedimentation tank and the input end of the filter, the sedimentation tank is connected to the accident tank, the output end of the filter is connected to the input end of the mother liquor tank, and the output end of the filter is connected to a backwash water pipe.

[0015] (III) Beneficial effects

[0016] The present invention provides a method for disposing ammonium sulfate mother liquor in an activated coke desulfurization process. It has the following beneficial effects:

[0017] The method for treating the ammonium sulfate mother liquor of the activated coke desulfurization process solves the reason why foam is generated after the saturator receives the mother liquor of the activated coke process. The method has an obvious effect on removing the foam of the mother liquor, is simple to implement, and has low labor intensity for workers. It solves the problem that a large amount of foam is generated in the saturator system after receiving the ammonium sulfate mother liquor generated by the activated coke process, avoids blockage, safety, environmental protection, and quality problems, and ensures that the saturator system can operate normally after receiving a large amount of mother liquor from the activated coke desulfurization process.

[0018] Essentially eliminate the cause of foaming in the saturator; debris will accumulate after filtering in the filter, and the effect will decline after a long time. This method innovatively uses titanium rod filters, which can be backflushed after the effect declines. The backflushing debris enters the sedimentation system and is easy to handle after sedimentation. Field operation has proved that the filtration-backflushing-filtration process can be repeated, greatly reducing labor intensity and equipment investment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention;

[0020] Figure 2 It is a structural schematic diagram of the existing equipment;

[0021] Figure 3 It is a comparison diagram of the on-site situation before and after the improvement of the present invention;

[0022] Figure 4It is a comparison diagram of the mother liquor conditions before and after the improvement of the present invention. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figure 1-3 , the present invention provides a technical solution: a method for disposing ammonium sulfate mother liquor in an activated coke desulfurization process, comprising a spray saturator, a full flow tank, a mother liquor tank and a mother liquor vent tank;

[0025] The output end of the spray saturator is connected to the input end of the full flow tank, the output end of the full flow tank is connected to the input end of the spray saturator through a small mother liquid pump, the output end of the mother liquid tank is connected to the input end of the full flow tank through a mother liquid replenishment pump, the output end of the mother liquid drain tank is connected to the input end of the mother liquid tank through a self-priming pump, and the mother liquid drain tank is connected to an accident pool;

[0026] The specific operations of the improvement are as follows:

[0027] When in use, a portion of the mother liquor is cut off from the saturator mother liquor replenishment pipeline and enters the venting system. When the venting system is returned, it is processed and a filter is added to forcefully filter the circulating liquid to remove impurities in the system. The filtered mother liquor returns to the mother liquor replenishment system.

[0028] The venting system includes a sedimentation tank, the output end of the self-priming pump is connected to the sedimentation tank and the input end of the filter, the sedimentation tank is connected to the accident tank, the output end of the filter is connected to the input end of the mother liquid tank, and the output end of the filter is connected to a backwash water pipe.

[0029] In summary, the method for treating the ammonium sulfate mother liquor of the activated coke desulfurization process solves the reason why foam is generated after the saturator receives the mother liquor of the activated coke process. The method has an obvious effect on removing the foam of the mother liquor, is simple to implement, and has low labor intensity for workers. It solves the problem that the saturator system generates a large amount of foam after receiving the ammonium sulfate mother liquor generated by the activated coke process, avoids blockage, safety, environmental protection, and quality problems, and ensures that the saturator system can operate normally after receiving a large amount of mother liquor from the activated coke desulfurization process.

[0030] Essentially eliminate the cause of foaming in the saturator; debris will accumulate after filtering in the filter, and the effect will decline after a long time. This method innovatively uses titanium rod filters, which can be backflushed after the effect declines. The backflushing debris enters the sedimentation system and is easy to handle after sedimentation. Field operation has proved that the filtration-backflushing-filtration process can be repeated, greatly reducing labor intensity and equipment investment.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for disposing ammonium sulfate mother liquor in an activated coke desulfurization process, characterized in that: It includes a spray saturator, a full flow tank, a mother liquor tank and a mother liquor drain tank; The output end of the spray saturator is connected to the input end of the full flow tank, the output end of the full flow tank is connected to the input end of the spray saturator through a small mother liquid pump, the output end of the mother liquid tank is connected to the input end of the full flow tank through a mother liquid replenishment pump, the output end of the mother liquid drain tank is connected to the input end of the mother liquid tank through a self-priming pump, and the mother liquid drain tank is connected to an accident pool; The specific operations of the improvement are as follows: When in use, a portion of the mother liquor is cut off from the saturator mother liquor replenishment pipeline and enters the venting system. When the venting system is returned, it is processed and a filter is added to forcefully filter the circulating liquid to remove impurities in the system. The filtered mother liquor returns to the mother liquor replenishment system.

2. The method for disposing ammonium sulfate mother liquor in an activated coke desulfurization process according to claim 1, characterized in that: The venting system includes a sedimentation tank, the output end of the self-priming pump is connected to the sedimentation tank and the input end of the filter, the sedimentation tank is connected to the accident tank, the output end of the filter is connected to the input end of the mother liquid tank, and the output end of the filter is connected to a backwash water pipe.

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