Chemical waste liquid negative pressure recovery device

A negative pressure recovery and waste liquid technology, which is applied to chemical instruments and methods, heating water/sewage treatment, water treatment parameter control, etc., can solve the problems of large cooling water loss, poor effect, and more evaporation of circulating water, and achieve reduction The amount of condensate, high evaporation efficiency, and the effect of reducing environmental pollution

Inactive Publication Date: 2015-05-20
TIANJIN BOHUA ZHONGHE CHEM
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, using this negative pressure suction filtration process to recover waste liquid will cause excessive evaporation of circulating water, excessive loss of cooling water, and poor recycling effect

Method used

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  • Chemical waste liquid negative pressure recovery device

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Embodiment Construction

[0015] The specific implementation of the present invention will be described in conjunction with the accompanying drawings and embodiments.

[0016] As shown in the drawings, a negative pressure recovery device for chemical waste liquid provided by the present invention includes a heater 1, an evaporator 2, a condenser 3, a liquid seal tank 4, and a water ring pump unit 5 for vacuuming and Small condensate buffer tank 6; the heater 1, evaporator 2, condenser 3 and liquid seal tank 4 are sequentially connected; the bottom outlet of the evaporator 2 is connected to the discharge pump 7; the condenser 3 is connected to the small condensate Buffer tank 6; the device adopts PLC automatic control system.

[0017] Further, the small condensate buffer tank 6 is provided with a liquid level switch on the top side wall of the tank.

[0018] Further, a flow meter is provided at the feed port of the heater 1, and the feed port is connected to a feed pump.

[0019] Further, the heater 1...

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Abstract

The invention relates to a chemical waste liquid negative pressure recovery device. The chemical waste liquid negative pressure recovery device comprises a heater, an evaporator, a condenser and a liquid seal groove and is characterized by also comprising a water ring pump unit for vacuumizing and a small-sized condensate buffer tank, wherein the heater, the evaporator, the condenser and the liquid seal groove are sequentially connected; the outlet formed in the bottom of the evaporator is connected with a discharge pump; the condenser is connected with the small-sized condensate buffer tank and a liquid level switch is arranged at the side wall of the inner top of the small-sized condensate buffer tank; a temperature and pressure sensor is arranged in each of the heater, the evaporator and the condenser; and a PLC automatic control system is adopted in the device. By adopting the water ring pump unit instead of a steam jet pump unit, the problems that too much circulating water is evaporated, the loss in the cooling water is too large and the recycling effect is poor when the waste liquid is recovered by virtue of negative pressure suction-filtration process manner during the practical production are solved.

Description

technical field [0001] The invention relates to the technical field of industrial waste liquid recovery, in particular to a negative pressure recovery device for chemical waste liquid. Background technique [0002] In modern industrial production, if untreated waste liquid is discharged randomly, it will not only have a bad impact on the environment, but will even destroy the ecology and cause a waste of resources. How to effectively treat industrial waste liquid has gradually gained the attention of more and more industrial production enterprises, and the waste liquid treatment device has been continuously improved. [0003] In the prior art, negative pressure concentration and evaporation process is mostly used for the treatment of industrial waste liquid. The principle of negative pressure evaporation is to heat the aqueous solution containing metal salts and hydrogen chloride solutes in a vacuum state, so that the soluble solutes and water in the solution evaporate toge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/04
CPCC02F1/04C02F2209/005
Inventor 王洪军
Owner TIANJIN BOHUA ZHONGHE CHEM
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