Recycling system of chlorination mother solution and recycling method thereof

A technology of mother chlorination and chlorination liquid, which is applied in the field of recycling system of chlorination mother liquid, can solve problems such as increased production costs, environmental pollution, and large amounts of waste liquid, and achieves reduction of environmental protection costs, improvement of economic benefits, and reduction of production cost effect

Inactive Publication Date: 2009-09-02
ZHEJIANG ZHENGGUANG IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the extremely high cost of secondary treatment of the waste liquid, the general user does not process the liquid, but directly discharges it, which causes great pollution to the environment and directly increases the production cost of the anion exchange resin; the second is to use hydrochloric acid for the reaction, And get hydrogen chloride gas from the reaction of hydrochloric acid
Since the

Method used

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  • Recycling system of chlorination mother solution and recycling method thereof
  • Recycling system of chlorination mother solution and recycling method thereof
  • Recycling system of chlorination mother solution and recycling method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Embodiment 1: with reference to attached figure 1 . The recycling system of the chlorination mother liquor, the processing and manufacturing of the chloromethylation reactor 1 are prior art, and are not described here. The inlet of chloromethylation reaction kettle 1 is respectively connected with the outlet of the air flow conveying system and pump delivery, the outlet of chloromethylation reaction kettle 1 is connected with the inlet of chlorine ball washing reaction kettle 2 through pipes and valves, and the chlorine ball washing reaction kettle The processing and manufacturing of 2 is a prior art, and is not described here. The chlorine ball that the chlorine ball washing reactor 2 produces enters the amination reaction system 3 through the pipeline and the valve that are connected with its outlet, and the processing and manufacturing of the chlorine ball washing reactor 2 is a prior art, and will not be described here. The chlorinated mother liquor and the chlori...

Embodiment 2

[0029] Embodiment 2: on the basis of embodiment 1, with reference to appended figure 1 ~3. The recycling method of chlorinated mother liquor, the white ball and chloromethyl ether are transported to the chloromethylation reaction kettle through the air flow conveying system and the pump respectively, stirred at normal temperature, after expansion, adding ferric chloride dissolved in chloromethyl ether to catalyze , produce an exothermic reaction, adjust the adding speed of chloromethyl ether according to the temperature, the temperature is in the range of 20°C to 48°C, and the adding speed of chloromethyl ether and white ball is controlled within 2 tons / hour. After the temperature is raised to 40-55°C and kept warm for 8-12 hours, chlorine spheres are prepared, and the temperature is lowered. The separated chlorine spheres are placed in the washing tank, and the chlorine spheres are washed with chlorinated methanol for 1-3 times in sequence, and the chlorine spheres are washed...

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Abstract

The invention relates to a recycling system of chlorination mother solution and a recycling method thereof in an automatic anion exchange resin production system, white ball and chloromethyl ether are sent to a chloromethylation reaction kettle respectively by an airflow transmitting system and pump transmission, stirring is carried out at normal temperature; after inflating, ferric trichloride dissolvable in the chloromethyl ether is added for catalysis, and exothermic reaction is generated, the adding speed of the chloromethyl ether is regulated according to temperature, chlorine ball is prepared after the temperature is raised to 48 DEG C and temperature insulation is carried out for 10 hours, temperature reduction is carried out, the separated chlorine ball is washed sequentially by chloride methanol for two times, and by methanol for one time; then, solid-liquid separation is carried out, solid-phase chlorine ball enters amination reaction, liquid-phase chlorination mother solution and chlorine ball cleaning solution enter a chlorination liquid recycling reaction kettle, chloride methanol generated in the chlorination liquid recycling reaction kettle enters a chloromethyl ether reaction kettle; and then, solid methanol and chlorine hydride are added in the chloromethyl ether reaction kettle for reaction, chloromethyl ether volatilized in the reaction process enters a chloromethylation reaction kettle after condensation by a condenser, and noncondensable gas enters an alkali spray tower for absorption treatment.

Description

technical field [0001] The invention relates to a recycling system and a recycling method for chlorinated mother liquor in an anion exchange resin automatic production system, and belongs to the field of anion exchange resin production systems and production methods. Background technique [0002] In the production of chloromethyl ether, liquid formaldehyde and hydrochloric acid are generally used to participate in the production of chloromethyl ether. Since less than 37% of the liquid formaldehyde is formaldehyde and more than 63% is water, a large amount of waste liquid will be generated in the production. Due to the extremely high cost of secondary treatment of the waste liquid, the general user does not process the liquid, but directly discharges it, which causes great pollution to the environment and directly increases the production cost of the anion exchange resin; the second is to use hydrochloric acid for the reaction, And get hydrogen chloride gas from the reaction ...

Claims

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Application Information

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IPC IPC(8): B01J41/12C07C43/12C07C31/36B01J41/13
Inventor 沈建华汪选明劳法勇钟轶泠
Owner ZHEJIANG ZHENGGUANG IND
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