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Denitrated gypsum cleaning device and method

A cleaning and denitration technology, applied in chemical instruments and methods, calcium/strontium/barium compounds, inorganic chemistry, etc., can solve the problems of unachievable solid cleaning effect, improve the efficiency of dehydration and filter cake cleaning, accurate and reliable. regulatory effect

Active Publication Date: 2017-05-31
封祁宁
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the solid-liquid separation effect, solid cleaning effect and separated diluted filtrate of the existing denitrification gypsum cleaning device and process cannot reach the level expected by the actual industry

Method used

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  • Denitrated gypsum cleaning device and method
  • Denitrated gypsum cleaning device and method

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Embodiment Construction

[0032] The purpose of the present invention is to solve the problem of purifying the quality of denitrification gypsum by-product of the alkali plant and removing the salt, so as to meet the use needs of downstream industries, and at the same time ensure that the original brine is not diluted and used for the downstream production of the body to ensure sufficient solid-liquid purpose of separation.

[0033]A core of the present invention is the separation of solid-liquid mixture and slurry, and by adjusting the size of the generated gypsum crystals, the effect of solid-liquid separation is achieved. There are special requirements for the filtrate, and at the same time, the separated solids are cleaned and desalinated Devices and processes designed and invented for processing.

[0034] The usual vacuum belt dehydrator only focuses on the dehydration effect, the humidity of the dehydrated solids, etc., but does not pay attention to the filtrate after dehydration. On the basis o...

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PUM

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Abstract

The invention discloses a denitrated gypsum cleaning device. The denitrated gypsum cleaning device comprises an adjustable chemical gypsum crystallizing reactor and a sectional type vacuum belt dehydrator. The adjustable chemical gypsum crystallizing reactor can effectively control the sizes of gypsum crystals so as to further realize sufficient solid and liquid separation; therefore, the dehydrating efficiency and the filter cake washing effect of the sectional type vacuum belt dehydrator are improved and an obtained filter cake can meet use requirements of the downstream industry; and as the sectional type vacuum belt dehydrator is of sectional design, solid containing slurry can be separated, a separated filter liquor can be guaranteed not to be polluted and diluted, and the separated solid filter cake can be also guaranteed to be sufficiently washed and dehydrated.

Description

technical field [0001] The invention belongs to the field of gypsum cleaning, in particular to a denitration gypsum cleaning device and method. Background technique [0002] Brine denitrification, using the freezing method to remove sulfate ions in brine, has the characteristics of high energy consumption and large investment in equipment. Chemical denitrification is a new denitrification method for alkali plants, that is, calcium ion solution is added to salt brine. Thereby crystallization forms calcium sulfate dihydrate solid (gypsum), removes the solid gypsum containing sulfate radical through solid-liquid separation, thereby achieves the purpose of removing sulfate radical in brine solution, but the solid gypsum produced, but because of high salt content, cannot be effectively utilized. Subsequent separation is required, and the clean process can produce qualified gypsum that can be used by downstream industries, and at the same time, it must meet the purpose of not dil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F11/46C04B11/02
CPCC01F11/468C04B11/02
Inventor 封祁宁
Owner 封祁宁
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