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Flash separation equipment with high efficiency and corrosion resistance

A technology of separation equipment and high-pressure flash evaporation, applied in water/sewage treatment equipment, heating water/sewage treatment, natural water treatment, etc. Dust, long-term stable operation of the control device, etc., to achieve the effect of reducing labor force, reducing anti-mixing, and low cost

Active Publication Date: 2018-05-18
LUXI CHEM GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the current industrial production process of pulverized coal pressurized continuous gasification in the field of coal chemical production, due to the large amount of coal ash entrained in the synthesis gas, the flushing of the inlet distributor of the flash tank will also be intensified, and the service life will be reduced
When the sparger flushes and leaks, the black water will directly impact the outer wall of the flash tank and cause flushing; the black water will directly enter the interior without effective dispersion, resulting in incomplete flash evaporation, and excessive coal ash will also cause scale accumulation in the space of the high-pressure flash tank Severe dust, the flash space is reduced, and the flash effect is poor, resulting in a large load on the vacuum flash system in the subsequent process, and a high temperature of the vacuum flash liquid, which makes the settlement effect of the settling tank worse, so that the water quality of the entire water circulation system is getting worse and worse. Restricted long-term stable operation of the device

Method used

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  • Flash separation equipment with high efficiency and corrosion resistance
  • Flash separation equipment with high efficiency and corrosion resistance
  • Flash separation equipment with high efficiency and corrosion resistance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] A black water flash system for industrial production of pulverized coal pressurized continuous gasification, such as figure 2 As shown, the above-mentioned high-efficiency corrosion-resistant flash separation equipment is used as the high-pressure flash tank 6, and the number of black water input pipelines is 6, of which, 3 black water input pipelines are connected to the black water drainage pipeline outside the gasifier, and 3 black water input pipelines are The input pipeline is connected to the black water discharge pipeline outside the washing tower, the steam in the high-pressure flash tank 6 is transported from the steam outlet to the stripping tower through the steam pipeline, and the black water in the high-pressure flash tank 6 is transported from the black water outlet through the black water delivery pipeline to the vacuum flash tank.

[0050] The process of the black water flash evaporation system is as follows: the black water discharged from the outside ...

Embodiment 2

[0052] A black water flash system for pulverized coal pressurized continuous gasification industrial production, using the above-mentioned high-efficiency corrosion-resistant flash separation equipment as a high-pressure flash tank, and the number of black water input pipelines is 4, of which 2 black water input pipelines Connect the black water discharge pipeline outside the gasifier, and connect the two black water input pipelines to the black water discharge pipeline outside the scrubber. The steam in the high-pressure flash tank is transported from the steam outlet to the stripping tower through the steam pipeline. The black water is transported from the black water outlet to the vacuum flash tank through the black water delivery pipeline.

[0053] The process of the black water flash evaporation system is as follows: the black water discharged from the outside is transported to the black water input pipeline of the high-pressure flash tank, and then enters the high-pressur...

Embodiment 3

[0055] A black water flash system for industrial production of pulverized coal pressurized continuous gasification, such as image 3 As shown, the above-mentioned high-efficiency corrosion-resistant flash separation equipment is used as the high-pressure flash tank 6, and the number of black water input pipelines is 4, of which, 2 black water input pipelines are connected to the black water drainage pipeline outside the gasifier, and 1 black water input pipeline is The input pipeline is connected to the black water discharge pipeline outside the washing tower, and one black water input pipeline is connected to the black water discharge pipeline outside the cyclone separator. The black water in the tank 6 is delivered to the vacuum flash tank through the black water delivery pipeline from the black water outlet.

[0056] The process of the black water flash evaporation system is as follows: the black water discharged from the outside is transported to the black water input pipe...

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PUM

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Abstract

The invention discloses flash separation equipment with high efficiency and corrosion resistance. The equipment comprises a flash tank, wherein at least two black water input pipes enter the flash tank from the upper part of the flash tank; an outlet of each black water input pipe is located at the upper part of the flash tank; outlet directions of the black water input pipes intersect at one point, and distances between the intersection point and the outlets of the black water input pipes are equal, so that black water jet flow ejected from the black water input pipes impacts to each other; asteam outlet is formed in the lower middle part of the side wall of the flash tank; an inclined downward flow baffle is arranged on the inner wall, located above the steam outlet, of the flash tank;a black water outlet is formed in the bottom of the flash tank. With the adoption of steam-water jetting manner, scouring of the device walls is reduced, and small liquid drops in the jet flow are splashed with flash steam and polymerized in the splashing process; large liquid drops impact to each other with the jet flow and are dispersed into small liquid drops, so that flash area is effectivelyincreased, and flash rate is increased.

Description

technical field [0001] The invention relates to a high-efficiency corrosion-resistant flash separation device, which is suitable for the field of ash water treatment of continuous pulverized coal gasification, and is especially suitable for the treatment of ash water in a pulverized coal gasification furnace system containing high fly ash using a water quenching process . Background technique [0002] The pulverized coal pressurized continuous gasification process in the field of coal chemical production mainly includes a coal grinding and drying system, a pulverized coal pressurized gasification system and a slag water treatment system. water. The black water from the washing tower and gasifier undergoes secondary flash evaporation of high-pressure flash evaporation and vacuum flash evaporation, and then undergoes sedimentation, filtration, etc., so as to achieve the purpose of treating slag water. [0003] Among them, the black water from the scrubber (about 208°C) and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/06C02F103/34
CPCC02F1/06C02F2103/34C02F2201/002
Inventor 周广兵庞书阳朱士宁杨延伟
Owner LUXI CHEM GRP