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Device and method for improving ammonium sulfate crystal quality

A crystallization and quality technology, applied in the field of ammonia desulfurization, can solve the problems of poor crystal separation effect, low quality of ammonium sulfate crystals, low production efficiency, etc., and achieve the effects of being beneficial to dehydration, simple structure and improving crystal quality

Active Publication Date: 2012-12-19
BEIJING GUODIAN LONGYUAN ENVIRONMENTAL ENG +1
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Problems solved by technology

[0004] The present invention provides a device and method for improving the crystallization quality of ammonium sulfate, to solve the technical problems of low quality of existing ammonium sulfate crystals, poor crystal separation effect, high energy consumption and low production efficiency

Method used

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  • Device and method for improving ammonium sulfate crystal quality

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Embodiment Construction

[0017] Examples see figure 1 As shown, the device for improving the crystallization quality of ammonium sulfate is composed of a slurry cooling tank 3 connected to the process water inlet pipe 6, and a low-speed top-feeding agitator that extends downward into the slurry 10 is installed in the slurry cooling tank 3. 4, a cooling interlayer 5 is arranged outside the slurry cooling kettle 3, the thickness of the cooling interlayer 5 is 100 mm, the lower part and the upper part of the cooling interlayer 5 respectively have a cooling water inlet 1 and a cooling water outlet 2, and the cooling water inlet 1 is connected to the process water inlet pipe The process water branch pipe 7 separated from 6 is connected, the cooling water outlet 2 is connected with the process water inlet pipe 6 through the cooling water outlet pipe 8, and the connection between the cooling water outlet pipe 8 and the process water inlet pipe 6 is close to the water inlet of the process water tank 9.

[001...

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Abstract

The invention discloses a device and a method for improving ammonium sulfate crystal quality. In the device, a main body consists of a size cooling kettle which is connected with a process water feeding pipe; a stirrer which is extended downward into size is arranged in the size cooling kettle; a cooling interlayer is arranged outside the size cooling kettle; the upper part and the lower part of the cooling interlayer are provided with a cooling water inlet and a cooling water outlet respectively; the cooling water inlet is connected with a process water branch pipe which is separated from the process water feeding pipe; the cooling water outlet is connected with the process water feeding pipe through a cooling water outlet pipe; and the connection part of the cooling water outlet pipe and the process water feeding pipe is close to a water inlet of a process water box. A bypass is separated from the process water feeding pipe and size enters the process water box through the cooling interlayer outside the size cooling kettle; and by reducing the size temperature, the contour dimensions of crystals are increased and dehydration is facilitated. The device has a simple structure, is convenient to install, obviously improve the ammonium sulfate crystal quality, and can be widely applied to crystal treatment of thiamine in desulfuration by an ammonia method, and energy consumption of a system is not needed to be increased.

Description

technical field [0001] The invention relates to ammonia desulfurization technology, in particular to a treatment device and method for ammonium sulfate crystallization. Background technique [0002] Ammonia desulfurization in thermal power plants is a new type of desulfurization process. This technology uses ammonia as an absorbent to absorb and solidify sulfur dioxide in flue gas to produce ammonium sulfate as a by-product. In actual operation, it is found that the quality of ammonium sulfate crystals is a key factor for the normal operation of the dehydration system. There are two main indicators of crystal quality, the solid content in the slurry and the crystal size. [0003] The existing ammonium sulfate dehydration process is to form ammonium sulfate solution in the absorption system, and pass the ammonium sulfate solution through a specific process to obtain a slurry with a certain solid content, and then directly send the slurry into a centrifuge to remove excess w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01C1/248
Inventor 钟洪玲汪德志路光杰周启洪
Owner BEIJING GUODIAN LONGYUAN ENVIRONMENTAL ENG
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