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Hydrolysis reactor

A hydrolysis reactor and heater technology, applied in water/sewage treatment, chemical instruments and methods, heating water/sewage treatment, etc., can solve the problems of increasing the burden on the phenol cyanide wastewater treatment unit, and the purification effect is difficult to meet, so as to achieve hydrolysis Thorough reaction, uniform heat exchange, and reduced burden

Inactive Publication Date: 2015-09-30
ACRE COKING & REFRACTORY ENG CONSULTING CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Vacuum potassium carbonate desulfurization is a commonly used desulfurization technology in the coke oven gas purification system, but the desulfurization waste liquid contains a small amount of cyanide. If it is directly discharged to the phenol cyanide wastewater treatment unit, it will undoubtedly increase the burden on the phenol cyanide wastewater treatment unit. At the same time, the purification effect is also difficult to meet the requirements of the "Coking Chemical Industry Pollutant Discharge Standard GB16171-2012", that is, the water pollutant discharge limit: cyanide ≤ 0.20mg / L. The reactor with cyanide content, the device can effectively reduce the cyanide content in it, and at the same time, the operation and maintenance of the equipment is simple, and the operation is stable and reliable

Method used

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Embodiment 1

[0018] Such as figure 1 As shown, the hydrolysis reactor includes a tower body (4), a skirt (1), a heater (5) and a waste liquid inlet (10), the tower body (4) is a split type, and the tower body is connected by a flange (6). The two parts are connected, the skirt (1) is installed under the tower body (4), the vent (2) is arranged at the bottom of the tower body (4), the waste liquid inlet (10) is arranged above the vent (2), and the waste liquid inlet (10 ) adopts an annular pipe, a number of small holes are distributed at the bottom of the annular pipe, manholes (3) are installed in the lower part of the tower body (4), and a heater (5) is installed inside the tower body (4), and the heater (5) adopts a serpentine heater. The heating medium inlet (7) and the heating medium outlet (9) of the heater (5) are both arranged on the top of the tower body (4), and the waste liquid outlet (8) is arranged on the top of the tower body (4).

[0019] Embodiment 1 is a hydrolysis reactor...

Embodiment 2

[0024] Such as figure 2 As shown, the hydrolysis reactor includes a tower body (4), a skirt (1), a heater (5) and a waste liquid inlet (10), and the skirt (1) is installed below the tower body (4), and the tower body (4) A vent (2) is arranged at the bottom, and a waste liquid inlet (10) is arranged above the vent (2). The waste liquid inlet (10) adopts an annular pipe, and several small holes are distributed at the bottom of the annular pipe. Manholes ( 3), the heater (5) is installed inside the tower body (4), and the heater (5) adopts a serpentine heater, and the heating medium inlet (7) and the heating medium outlet (9) of the heater (5) are all arranged in the tower The side of the body (4), and the top of the tower body (4) are provided with a waste liquid outlet (8).

[0025] Embodiment 2 is a top-entry hydrolysis reactor heating medium, and there is a large space in the tower body, and the heater can be repaired and maintained by entering the tower from a manhole.

...

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Abstract

The present invention relates to a hydrolysis reactor, which is used for carrying out hydrolysis on cyanides in desulfurization waste liquids so as to reduce the cyanide content in the desulfurization waste liquid. The hydrolysis reactor comprises a tower body, a skirt, a heater and a waste liquid inlet, wherein the skirt is arranged below the tower body, the bottom portion of the tower body is provided with an emptying port, a waste liquid inlet is arranged above the emptying port and adopts an annular pipe so as to increase the material feeding uniformity, the lower portion of the tower body is provided with a manhole, the heater is arranged inside the tower body, adopts a hosepipe type heater, and is provided with a heating medium inlet and a heating medium outlet, and the top portion of the tower body is provided with a waste liquid outlet. With the hydrolysis reactor of the present invention, the cyanide in the desulfurization waste liquid and the water can be subjected to the hydrolysis reaction to decompose into harmless formate and ammonia, the waste liquid inlet adopts the annular pipe, it is ensured that the retention time of the waste liquid in the tower is the same, the heat exchange is uniform through the hosepipe type heater, and the cyanide hydrolysis reaction is complete.

Description

technical field [0001] The invention relates to a hydrolysis reactor for reducing cyanide content in desulfurization waste liquid in a coke oven gas purification system. Background technique [0002] Vacuum potassium carbonate desulfurization is a commonly used desulfurization technology in the coke oven gas purification system, but the desulfurization waste liquid contains a small amount of cyanide. If it is directly discharged to the phenol cyanide wastewater treatment unit, it will undoubtedly increase the burden on the phenol cyanide wastewater treatment unit. At the same time, the purification effect is also difficult to meet the requirements of the "Coking Chemical Industry Pollutant Discharge Standard GB16171-2012", that is, the water pollutant discharge limit: cyanide ≤ 0.20mg / L. Therefore, it is necessary to design a method to reduce cyanide in desulfurization waste liquid The reactor with low cyanide content, the device can effectively reduce the cyanide content in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/58C02F1/02
Inventor 李晶晶梁有仪于涛段有龙
Owner ACRE COKING & REFRACTORY ENG CONSULTING CORP
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