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Preparation process of circulating water sterilizing and algae-removing agent

A bactericide and algicide preparation technology, applied in the field of circulating water bactericide and algaecide preparation technology, can solve the problems of low reaction pressure, inaccessibility, low yield, etc., achieve stable price, complete reaction, and reduce production costs Effect

Inactive Publication Date: 2013-11-13
南雄市汇源化工科技有限公司
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Problems solved by technology

At present, the reaction pressure is low in industrial production, and a large part of dichloromethane is gas, which cannot be fully contacted with the aqueous solution of sodium thiocyanate, and adding a phase transfer catalyst has no effect on it, so the production rate has always been low.

Method used

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Embodiment Construction

[0022] Below in conjunction with embodiment the present invention is further described.

[0023] A kind of preparation technology of circulating water bactericidal algicide, its processing step is:

[0024]The first step is synthesized: raw material selection mass percentage content is 98% ammonium thiocyanate, mass percentage content is 95% dichloromethane, methanol and water, ammonium thiocyanate, dichloromethane, methyl alcohol and water are 2 by weight: 2: 1: 5 Put into the reaction kettle to heat for reaction, then seal the reaction kettle, open the steam valve, connect the steam pipe to the steam inlet of the reaction kettle, let the steam enter the jacket of the reaction kettle for heating, and start the reaction Stir the reactants with the stirring button on the kettle. When the temperature rises to 90°C and the air pressure is 0.4MPa, close the steam valve to keep the temperature for continuous synthesis for more than 6 hours, and then drop to normal temperature;

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PUM

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Abstract

The invention relates to a preparation process of a circulating water sterilizing and algae-removing agent. The preparation process comprises the steps of synthesis, crystallization, product filtration, product washing, secondary filtration of the product, product refining and drying. The preparation process adopts an ammonium thiocyanate synthesis method, so the utilization ratio of resources is increased, environmental pollution is reduced and the production cost is reduced; ammonium thiocyanate which is produced by vast enterprises is selected as a raw material, so the raw material is stable in price and low in cost; according to the synthesis characteristic of water-based ammonium thiocyanate and oily dichloromethane, the water-based ammonium thiocyanate and the oily dichloromethane are dissolved mutually and completely under high-rotating-speed propelling agitation, the reaction is complete and the yield of the products reaches 80 percent.

Description

technical field [0001] The invention belongs to the technical field of green and environment-friendly circulating water treatment chemical preparation method, and relates to a kind of industrial circulating water sterilization suitable for power plants, chemical plants, fertilizer plants, steel plants, printing and dyeing plants and oil refineries, and also suitable for sewage Preparation process of sterilizing and bacteriostatic circulating water sterilizing and algicide for sterilizing recycling and central air-conditioning and other water systems. Background technique [0002] my country ranks over 100 in the world in terms of fresh water per capita, and is listed as one of the 13 water-poor countries by international organizations. With the rapid development of the national economy, the situation of water shortage is becoming more and more serious. It is more and more necessary to save water and emphasize the use of recycled water. The special environment of circulating...

Claims

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Application Information

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IPC IPC(8): C07C331/04
Inventor 陈文涤钟辉华
Owner 南雄市汇源化工科技有限公司
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