Desulfurization wastewater treatment method

A desulfurization wastewater and treatment method technology, applied in the direction of gaseous effluent wastewater treatment, heating water/sewage treatment, general water supply conservation, etc., can solve problems such as broken equipment, corrosion, etc., achieve low temperature, improve desulfurization efficiency, and make full use of resources Effect

Inactive Publication Date: 2017-07-28
张玉君
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] Aiming at the problem that the waste water enters the desulfurization system in the existing desulfurization wastewater treatment process, which breaks the original desulfurization balance and causes equipment corrosion, the present invention provides a desulfurization wastewater treatment method

Method used

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  • Desulfurization wastewater treatment method

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Effect test

Embodiment 1

[0044] Such as figure 1 , a desulfurization wastewater treatment device, including a wastewater system, and also includes a phase change generator 2 and a hot air unit, the top of the phase change generator 2 is provided with an outlet, and the bottom of the phase change generator 2 is provided with a solid discharge port , the phase change generator 2 communicates with the hot air unit, and the waste water system communicates with the atomizer 9 inside the phase change generator 2 .

[0045] The hot air output by the hot air unit is mixed with the desulfurization wastewater of the wastewater system atomized by the atomizer 9 to undergo mass heat exchange in the phase change generator 2 to form water vapor and solid particles, and the water vapor passes through the phase change generator 2 The top outlet is discharged, and the solid particles are discharged through the solid discharge outlet at the bottom of the phase change generator 2; the phase change generator 2 provides a...

Embodiment 2

[0047] Such as figure 1 , a desulfurization wastewater treatment device of this embodiment, compared with Embodiment 1, further includes a compressed air unit 10, and the compressed air unit 10 communicates with the atomizer 9.

[0048] The compressed air unit 10 is connected to the atomizer 9, which strengthens the atomization effect of the desulfurization wastewater, and makes the desulfurization wastewater form smaller droplets, so that the hot air and the droplets of the desulfurization wastewater can have a more sufficient mass-thermal reaction. So that the water in the desulfurization wastewater can be more thoroughly formed into water vapor and evaporated.

Embodiment 3

[0050] Such as figure 1 , a desulfurization wastewater treatment device of the present embodiment is further improved on the basis of embodiment 1 or 2, and further includes a gas-solid separator 3 and a fan 4, and the front end of the gas-solid separator 3 is connected to the phase change generator The outlet of 2 is connected, and the rear end of the gas-solid separator 3 is connected with the fan 4.

[0051] After the mass-heat exchange, the impurities and salt in the desulfurization wastewater crystallize to form solid particles. The solid particles include large-particle solids and small-particle solids. Large-particle solids refer to solid particles that fall under the action of hot air and gravity. The solid particles that rise together with the steam, and the large solid particles fall to the solid outlet of the phase change generator 2 under the action of gravity, and the water vapor and small particle solids enter the gas-solid separator 3 from the outlet of the phas...

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Abstract

The invention discloses a desulfurization wastewater treatment method, and belongs to the field of desulfurization wastewater treatment. A hot air unit introduces hot air into a phase change generator; meanwhile, a wastewater system conveys desulfurization wastewater to an atomizer in the phase change generator for atomization, hot wind formed by the desulfurization wastewater and the hot air is changed into a gas phase from a liquid phase through mass and heat exchange and the gas phase is discharged from an outlet of the phase change generator along with the hot wind; a solid formed by impurity crystal in the desulfurization wastewater enters the hot air unit at a solid outlet of the phase change generator under the action of gravity. According to the desulfurization wastewater treatment method, hot air in the phase change generator and atomized desulfurization wastewater drops are subjected to mass and heat exchange, and the desulfurization wastewater drops are evaporated and crystallized and then subjected to gas-solid separation. The problems that an original desulfurization balance is broken and equipment corrosion is caused in the desulfurization wastewater treatment process in a flue are solved, so that zero pollution and zero emission of the desulfurization wastewater are achieved.

Description

technical field [0001] The invention belongs to the field of desulfurization wastewater treatment, and more specifically relates to a desulfurization wastewater treatment method. Background technique [0002] When coal power chemical enterprises apply desulfurization technology in production, they will produce a certain amount of desulfurization wastewater. The composition of desulfurization wastewater is complex, mainly containing high-concentration suspended solids, supersaturated sulfite, soluble chloride and fluoride, and various heavy metal impurities. Many of them are the first category of pollutants that require strict control in the national environmental protection standards. Therefore, strict treatment of desulfurization wastewater is required to meet the "zero discharge" standard of desulfurization wastewater required by the state. The main difficulties in the treatment of desulfurization wastewater are that the water quality and quantity are greatly affected by ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/04C02F103/18
CPCC02F1/04C02F2103/18Y02A20/141
Inventor 张玉君
Owner 张玉君
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