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Indirect steam heating ammonia still system and deslagging method thereof

A technology of steam heating and ammonia steaming tower, applied in the field of coke oven gas purification, can solve the problems of easy agglomeration and blockage of pipelines, unenvironmental protection, parking accidents, etc., and achieves the effect of clean and tidy on-site environment, reduced manual intervention, and convenient disassembly and cleaning.

Pending Publication Date: 2022-01-11
ACRE COKING & REFRACTORY ENG CONSULTING CORP DALIAN MCC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the tar residue contains fine coal powder, calcium hydroxide and magnesium hydroxide and other precipitates, it is easy to agglomerate and block the pipeline, causing parking accidents. In addition, the operation process of slag removal and cleaning is extremely cumbersome and not environmentally friendly

Method used

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  • Indirect steam heating ammonia still system and deslagging method thereof

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Embodiment Construction

[0030] The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing:

[0031] Such as figure 1 As shown, a kind of indirect steam heating ammonia distillation tower system of the present invention comprises ammonia distillation tower 1; Also includes reboiler 2, ammonia distillation tower tar residue precipitation tank 3, reboiler tar residue precipitation tank 4, tar A slag tank 5 and an underground emptying tank 6; the lower side of the ammonia distillation tower 1 is provided with a circulating fluid inlet and a circulating fluid outlet, the circulating fluid inlet is connected to the circulating fluid outlet through a circulating fluid pipeline, and a reboiler 2 is arranged on the circulating fluid pipeline; The top of the ammonia distillation tower tar residue precipitation tank 3 is provided with a circulating fluid outlet, the upper side is provided with a circulating fluid inlet, and the bottom is provided wi...

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Abstract

The invention relates to an indirect steam heating ammonia still system and a deslagging method thereof. The system comprises an ammonia still, a reboiler, an ammonia still tar residue precipitation tank, a reboiler tar residue precipitation tank, a tar residue tank and an underground emptying tank; by adding the tar residue settling tank of the ammonia still and the tar residue settling tank of the reboiler, so that the settling positions of the tar residues in the ammonia still and the reboiler are transferred to the outside from the inside of the original equipment, and the tar residues can be automatically discharged at regular time. Thus, the tar residues are more convenient and faster to treat, and the tar residues do not need to be shut down and do not influence production when being cleaned.

Description

technical field [0001] The invention relates to the technical field of coke oven gas purification, in particular to an ammonia distillation tower system heated by indirect steam in an ammonia distillation unit and a slagging method thereof. Background technique [0002] Ammonia is a nitrogenous compound that is a by-product of the coal coking process. Generally, dry coal contains about 2% nitrogen, of which 40%-50% enters the raw coal gas, most of which form ammonia, and a small part form hydrogen cyanide and pyridine. [0003] Ammonia is a colorless gas with a strong pungent smell, easily soluble in water, and the aqueous solution is ammonia water. [0004] Raw coal gas from coke ovens is a complex mixture of dry gas, water vapor and a series of chemicals. After being processed by a gas purification device, chemicals such as tar, ammonia, and benzene are recovered, and the clean gas is sent to users for use. After the raw coal gas passes through the ascending pipe, it is ...

Claims

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Application Information

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IPC IPC(8): B01D1/00B01D1/30B01D21/02C10K1/00
CPCB01D1/0041B01D1/30B01D21/02C10K1/002
Inventor 杨雪松
Owner ACRE COKING & REFRACTORY ENG CONSULTING CORP DALIAN MCC