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A system and method for recycling unqualified sodium hypochlorite

A qualified technology for sodium hypochlorite, applied in the field of unqualified sodium hypochlorite recycling system, can solve the problems of increasing the load of sewage treatment station, excessive acetylene sulfur, phosphorus content, waste of resources, etc., to reduce the company's economic loss, reduce raw material costs, solve perishable effect

Active Publication Date: 2017-12-05
DEZHOU SHIHUA CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When the sodium hypochlorite is partially decomposed due to high summer temperature or the available chlorine index fails to meet the process requirements due to high temperature in summer, if the unqualified sodium hypochlorite is sent to the acetylene for cleaning, the sulfur and phosphorus content in the acetylene will exceed the standard, affecting production; if the unqualified The discharge of secondary sodium into the ditch will increase the load of the sewage treatment station and cause a lot of waste of resources

Method used

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  • A system and method for recycling unqualified sodium hypochlorite

Examples

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Effect test

Embodiment 1

[0025] An unqualified sodium hypochlorite recycling system, comprising a secondary lye absorption tower 4, a secondary lye circulation tank 2, a sodium hypochlorite finished product tank 1, a secondary lye circulation tank (standby) 3, a cooler 5, and a transmission pipe; It is characterized in that the secondary lye absorption tower 4 is connected to the secondary lye circulation tank 2 and the secondary lye circulation tank (standby) 3 through branch pipes, and the secondary lye circulation tank 2 and the secondary lye circulation tank (standby) ) The outlet end of 3 is connected with the secondary lye circulation pump 9, and the secondary lye circulation pump 9 is connected with the condenser 5 and the secondary lye absorption tower 4 successively, and the outlet end of the secondary lye circulation tank 2 is also connected with the sodium hypochlorite The inlet end of finished product tank 1 links to each other, and the outlet end of sodium hypochlorite finished product tan...

Embodiment 2

[0032] A kind of unqualified sodium hypochlorite recycling system, the structure is the same as embodiment 1, the difference is that a sodium hypochlorite finished product pump A / B is arranged between the outlet end of the secondary lye circulation tank 2 and the inlet end of the sodium hypochlorite finished product tank 1 (7).

Embodiment 3

[0034] An unqualified sodium hypochlorite recycling system, the structure is the same as that of Example 1, the difference is that a sodium hypochlorite product pump C / D (8) is provided between the outlet end of the sodium hypochlorite product tank 1 and the transmission pipe.

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Abstract

The invention relates to an unqualified sodium hypochlorite recycling system and method. A secondary alkali liquor absorption tower is connected with a secondary alkali liquor circulating groove and a sodium hypochlorite finished product pump through branch pipelines, the outlet end of the secondary alkali liquor circulating groove and the outlet end of the sodium hypochlorite finished product pump are connected with a secondary alkali liquor circulating pump, the secondary alkali liquor circulating pump is sequentially connected with a condenser and the secondary alkali liquor absorption tower, the outlet end of the secondary alkali liquor circulating groove is further connected with the inlet end of a sodium hypochlorite finished product tank, the outlet end of the sodium hypochlorite finished product tank is connected with a delivery pipe, and a backflow pipeline is arranged between the sodium hypochlorite finished product tank and the secondary alkali liquor circulating groove. By means of a sodium hypochlorite producing device of the secondary alkali liquor absorption tower, the finished product tank is arranged on the outlet of the sodium hypochlorite finished product pump and extends to a secondary alkali liquor circulating groove pipeline, dense alkali is added into unqualified sodium hypochlorite again, and a proper amount of chlorine is introduced so that the indexes of sodium hypochlorite can be within the technological requirement range.

Description

technical field [0001] The invention belongs to the field of sodium hypochlorite production, in particular to a recycling system and method for unqualified sodium hypochlorite. Background technique [0002] At present, sodium hypochlorite is produced. In order to ensure that sodium hypochlorite can be cleaned and delivered to acetylene at any time, most enterprises are equipped with finished sodium hypochlorite tanks. In the finished tanks, the effective chlorine index is 60~70g / L and the free alkali is 5~8g / L by diluting with water. L. When the sodium hypochlorite is partially decomposed due to high summer temperature or the available chlorine index fails to meet the process requirements due to high temperature in summer, if the unqualified sodium hypochlorite is sent to acetylene for cleaning, the sulfur and phosphorus content in the acetylene will exceed the standard, affecting production; The discharge of secondary sodium into the ditch will increase the load of the sew...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/78B01D53/96B01D53/68C01B11/06
Inventor 李子永高海义侯守慧魏晓芸付文亮尹书军张会君
Owner DEZHOU SHIHUA CHEM
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