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High-efficiency deacidification ammonia distillation tower

An ammonia distillation tower and deacidification technology, applied in the fields of degassed water/sewage treatment, water/sludge/sewage treatment, water pollutants, etc., can solve the problems of high cost, many equipment, low efficiency, etc. The effect of improving separation efficiency and reducing cost

Pending Publication Date: 2018-04-20
ACRE COKING & REFRACTORY ENG CONSULTING CORP DALIAN MCC
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  • Claims
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AI Technical Summary

Problems solved by technology

This process runs in series for deacidification and ammonia distillation, which requires more equipment, lower efficiency and high cost.

Method used

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  • High-efficiency deacidification ammonia distillation tower

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Embodiment Construction

[0015] The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing:

[0016] Such as figure 1 As shown, the high-efficiency deacidification ammonia distillation tower of the present invention includes a deacidification section 17, a volatile ammonia removal section 18, and a fixed ammonium removal section 19 arranged sequentially from top to bottom. The deacidification section 17, the volatile ammonia removal section 18, and the fixed ammonium removal section 19 are all made of corrosion-resistant titanium materials.

[0017] The upper part of the deacidification ammonia distillation tower is a deacidification section 17, and the deacidification section 17 is used for heating and decomposing acid gas. The middle part of the deacidification ammonia distillation tower is a volatile ammonia removal section 18, which is used for heating and decomposing volatile ammonia. The lower part of the deacidification and ammoni...

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Abstract

The invention relates to process equipment in the field of gas purification, and in particular relates to a high-efficiency deacidification ammonia distillation tower. The high-efficiency deacidification ammonia distillation tower includes a deacidification section, a volatile ammonia removal section and a fixed ammonium removal section which are set in order from top to bottom; the deacidification section is used to decompose an acid gas by heating, and the volatile ammonia removal section is used to decompose volatile ammonia by heating, and the fixed ammonium removal section is used for heating and chemically decomposing fixed ammonium; a liquid-disconnected disc is arranged between the deacidification section and the volatile ammonia removal section; an overflow distribution tube is arranged on the liquid-disconnected disc, and a deacidification section steam inlet is arranged below the liquid-disconnected disc; the top of the fixed ammonium removal section is provided with a lye inlet, and a flash vaporization wastewater vapor inlet, an ammonia distillation section vapor inlet and a lean liquid outlet are arranged on the bottom of the fixed ammonium removal section. The high-efficiency deacidification ammonia distillation tower is a deacidification and ammonia distillation integration device, separates and distills pregnant solution and ammonia distillation wastewater, completes the process of deacidification and ammonia distillation in the same device, effectively improves the separation efficiency, reduces process equipment and reduces the cost.

Description

technical field [0001] The invention relates to process equipment in the field of gas purification, in particular to a high-efficiency deacidification ammonia distillation tower. Background technique [0002] In the coke oven gas purification process, the ammonia in the gas is generally used as the alkali source, and the acid gas H in the gas is absorbed by the ammonia-rich water after ammonia washing. 2 S, HCN and CO 2 etc., the rich liquid is formed and sent to the deacidification tower, the heat source is provided by the ammonia steam of the ammonia distillation tower, and the H is separated in the deacidification tower 2 S, HCN and NH 3 etc., then send ammonia and acid gas to the ammonia decomposition Claus furnace to generate elemental sulfur, N 2 and H 2 . The deacidification barren liquid from the deacidification tower is divided into two parts: one part is sent to the washing section for desulfurization, and the other part is sent to the ammonia distillation tow...

Claims

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Application Information

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IPC IPC(8): C02F1/20C02F1/04C02F1/10C02F103/34C02F101/16
CPCC02F1/04C02F1/043C02F1/10C02F1/20C02F2103/34C02F2101/16
Inventor 曲斌于涛段有龙
Owner ACRE COKING & REFRACTORY ENG CONSULTING CORP DALIAN MCC
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