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Salt waste liquid incineration and heat recovery system and process

A technology for the recovery of salt-containing waste liquid and heat energy, applied in incinerators, combustion methods, combustion types, etc., can solve the problems of unstable process operation, large changes in water quality, and irregularities to follow, to ensure long-term normal operation, The effect of reducing damage and avoiding deposits

Active Publication Date: 2016-09-14
宜兴市智博环境设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the different components and concentrations of wastewater, and the irregular discharge, the amount of wastewater discharge and water quality vary greatly and there are no rules to follow. Unable to operate stably, and the generation of a large amount of sludge after sewage treatment brings new pollution sources

Method used

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  • Salt waste liquid incineration and heat recovery system and process
  • Salt waste liquid incineration and heat recovery system and process
  • Salt waste liquid incineration and heat recovery system and process

Examples

Experimental program
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Effect test

Embodiment 1

[0037] like Figure 1-2 As shown, a saline waste liquid incineration and heat recovery system includes a high-pressure atomization device, a primary incineration chamber, a labyrinth settling chamber, a secondary incineration chamber, a water-cooled cooling dust collector, a waste heat boiler, and an exhaust gas purification device connected in sequence; The labyrinth settling chamber includes a shell, a flue gas inlet and a flue gas outlet, and a plurality of baffles are vertically arranged between the flue gas inlet and the flue gas outlet in the shell, and the baffles are arranged crosswise so that the flue gas passes through a labyrinthine tortuous route; The length, width and height of the labyrinth settling chamber are set according to the amount of flue gas produced by the calorific value of the incinerated waste liquid, so that the flow velocity of the flue gas in the labyrinth settling chamber is 2-3 m / s, and the flue gas flows in the labyrinth The residence time in t...

Embodiment 2

[0042] like figure 2 As shown, a saline waste liquid incineration and heat recovery process specifically includes the following steps:

[0043] 1) The salt-containing waste liquid is atomized under high pressure and mixed with air and then enters the primary incineration chamber for incineration treatment; the temperature of the primary incineration is 750-800°C, and the residence time of the atomized waste liquid in the primary incineration chamber is 2 seconds;

[0044] 2) The flue gas produced in the primary incineration chamber is introduced into the labyrinth-type settling chamber for sedimentation treatment to remove large salt particles and dust in the flue gas; the flue gas after the primary incineration passes through the labyrinth-type settling chamber at 2.5 m / s The second speed passes, and the residence time of the flue gas in the settling chamber is controlled at 2 seconds.

[0045] 3) The residual flue gas after step 2) is introduced into the secondary incinera...

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Abstract

The invention discloses a salt-containing waste liquid combustion and heat energy recycling system which comprises a high-pressure atomization device, a primary combustion chamber, a labyrinth deposition chamber, a secondary combustion chamber, a water-cooling type cooling dust collector, a waste heat boiler and a tail gas purification device which are connected in sequence, wherein the labyrinth deposition chamber comprises a shell, a fume inlet and a fume outlet; a plurality of baffles are arranged vertically between the fume inlet and the fume outlet of the shell; the baffles are arranged in a cross manner, so that fume can pass through along a labyrinth curved route. Compared with the prior art, the salt-containing waste liquid combustion and heat energy recycling system is relatively safe, sufficient and thorough in recycling salt before the waste heat is recycled, prevents deposition of the salt in the waste heat boiler or a pipeline, effectively improves the waste heat recycling efficiency and ensures long-lasting normal operation of equipment.

Description

technical field [0001] The invention relates to an incineration treatment and heat energy recovery system of chemical waste liquid, in particular to a system and process for incineration treatment of waste liquid with high salinity and lye content and recovery and incineration of waste heat steam. Background technique [0002] There are many types of wastewater produced in the chemical production process. The composition and concentration of each wastewater vary with raw materials and processes. There are raw materials, by-products, degradation products, and raw and auxiliary materials, forming a large amount of toxic and harmful high-concentration waste liquid, etc. The pollutants in wastewater have complex components, high chroma, and most of them have a strong pungent odor. It is one of the most difficult wastewater to treat at present. [0003] The water quality of many chemical waste liquids varies greatly. Due to the different components and concentrations of wastewat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23G7/04F23J15/02F23L15/00F23J15/06
CPCF23G7/04F23J15/022F23J15/06F23L15/00Y02E20/34
Inventor 王志军
Owner 宜兴市智博环境设备有限公司