Acid mist condensing water-saving method of reaction kettle for producing aluminum polychlorid and system thereof

A technology of polyaluminum chloride and water-saving system, applied in aluminum chloride, chemical instruments and methods, aluminum halide, etc., can solve the problems of reducing the heat exchange efficiency of the condenser, low cycle utilization rate, increasing alkali consumption, etc. Achieve the effect of saving dosage, reducing lye consumption and reducing water consumption

Inactive Publication Date: 2012-10-03
HUAIHUA JUNYUAN FINE CHEM
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Problems solved by technology

A condenser is often used in the acid mist condensation process, with water as the cooling medium, and the recycling rate of water is not high. In addition, the condensate in the condenser is often discharged intermittently, and the c...

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  • Acid mist condensing water-saving method of reaction kettle for producing aluminum polychlorid and system thereof

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Embodiment Construction

[0015] like figure 1 The acid mist condensation water-saving system of the reaction kettle for producing polyaluminium chloride shown has a reaction kettle 1, a condensate collection tank 2, a condenser 3, an acid mist absorption tower 4, a circulating water tank 5, a circulating water pump 6, and a condenser The air inlet of 3 is connected to the mist discharge port of reactor 1 through a pipeline, the uncondensed gas outlet of condenser 3 is connected to acid mist absorption tower 4 through a pipeline, and the condensate outlet of condenser 3 is connected to condensate collection tank 2 through a pipeline The outlet of the condensate outlet pipe is immersed below the liquid surface of the condensate to form a liquid seal. There is no need to install a valve on the condensate outlet pipe of the condenser 3. The acid mist is separated from the outside by the liquid seal, and the condensate relies on the condensate. The static pressure of the liquid column formed on the outlet ...

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Abstract

The invention discloses an acid mist condensing water-saving method of a reaction kettle for producing aluminum polychlorid and a system of the acid mist condensing water-saving method. The acid mist of the reaction kettle for producing the aluminum polychlorid is recycled after being condensed by a condenser, the condenser is cooled by using circulating water, wherein the cooling water temperature is 5-40 DEG C; the circular cooling water is conveyed to the reaction kettle for producing the aluminum polychlorid so as to produce water; liquid after being condensed by the acid mist is delivered into the reaction kettle for producing the aluminum polychlorid to replace the hydrochloric acid; the system is provided with the condenser, a condensing liquid collecting tank, a circulating water tank and a circular water pump; a gas outlet of the condenser is connected with the reaction kettle through a pipeline, a non-condensable gas outlet of the condenser is connected with the acid mist absorbing tower through the pipeline; a condensate outlet is connected with a condensate collecting tank through the pipeline; and the cooling water pipe is orderly connected with the circulating water tank, the circular water pump and the condenser.

Description

technical field [0001] The invention relates to the technical field of water saving, in particular to an acid mist condensing water saving method and a system thereof in a reactor for producing polyaluminum chloride. Background technique [0002] The existing production process of polyaluminium chloride often adopts the acid-dissolving method, adding hydrochloric acid, aluminum-containing materials, regulators, water and other chemical reactants into the reactor during production, and reacting at a temperature of 95-100°C. During the reaction process, the hydrochloric acid is volatilized by heating to form acid mist. The acid mist is composed of HCL gas and water vapor. The acid mist needs to be recovered and purified during the production process to reduce environmental pollution. The current treatment method is to absorb the tail gas with alkali solution after the acid mist condenser. A condenser is often used in the acid mist condensation process, with water as the cooli...

Claims

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Application Information

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IPC IPC(8): B01D5/00B01D53/18C01F7/56
Inventor 刘雄杰彭力军
Owner HUAIHUA JUNYUAN FINE CHEM
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