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Fluorite drying tail gas treatment process

A treatment process and tail gas technology, applied in gas treatment, combined device, membrane technology, etc., can solve the problems of high UV photolysis catalytic load, poor odor removal effect, high operating cost, etc., and is conducive to popularization and application, washing With the effect of deep treatment stress relief and low investment

Pending Publication Date: 2020-04-17
SHANDONG DONGYUE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the process described in this patent does not involve pretreatment of organic matter in exhaust gas, and has the disadvantages of high UV photolysis catalytic load, poor odor removal effect after long-term use, large equipment investment, and high operating cost.

Method used

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  • Fluorite drying tail gas treatment process
  • Fluorite drying tail gas treatment process
  • Fluorite drying tail gas treatment process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A treatment process for fluorite drying tail gas, comprising the following steps:

[0033] The fluorite drying tail gas is firstly dedusted, and then the high-boiling organic matter in the tail gas is condensed and liquefied by cooling and condensing, and then discharged, and then the tail gas is circularly washed and desulfurized under the action of an alkaline solution, and finally the washed tail gas is treated to meet the standard discharge .

[0034] Among them, the temperature of the fluorite drying tail gas after cooling and condensation is controlled at 15-75°C, the alkaline solution is NaOH solution, the pH value is 10, and the temperature is 30°C, so as to ensure the best alkali washing absorption efficiency of the washing tower.

[0035] The odor treatment is UV photolysis catalysis.

Embodiment 2

[0037] Such as figure 1 As shown, a treatment process for fluorite drying tail gas is carried out by the following treatment device:

[0038] The processing device comprises a cyclone dust collector 1, a bag filter 2, a cooling condensing device, a washing device, an odor treatment device 8 and a chimney 10; the cyclone dust collector 1, a bag filter 2, a cooling condensing device, and a washing device , odor treatment device 8 and chimney 10 are connected in sequence; described cooling and condensing device includes flue gas heat exchanger 3 and gas-liquid separator 4 connected in series; described washing device includes washing tower 5, washing circulation pump 6 and washing liquid Heat exchanger 7; the washing circulation pump 6 is connected to the bottom of the washing tower 5, the washing liquid heat exchanger 7 is connected to the top of the washing tower 5, and the washing circulation pump 6 is connected to the washing liquid heat exchanger 7 to form a cycle circuit; ...

Embodiment 3

[0045] As described in Example 2, the difference is that the odor treatment device 8 adopts an activated carbon adsorption device.

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Abstract

The invention relates to a fluorite drying tail gas treatment process which comprises the following steps: dedusting fluorite drying tail gas, cooling and condensing to condense and liquefy high-boiling-point organic matters in the tail gas, discharging the condensed and liquefied high-boiling-point organic matters, circularly washing and desulfurizing the tail gas under the action of an alkalinesolution, and finally performing odor treatment on the washed tail gas to achieve up-to-standard emission. According to the process, dust, sulfur dioxide and organic matters in the fluorite drying tail gas are effectively treated, and the content of each pollution factor in the emptied tail gas meets the latest environmental protection requirement. By cooling and condensing the flue gas, the high-boiling-point organic matters in the flue gas are separated out, so that the content of the organic matters entering the tail gas odor treatment facility is greatly reduced, and the operation cost andthe early-stage equipment investment of the odor deep treatment facility are greatly reduced.

Description

technical field [0001] The invention relates to a treatment process for fluorite drying tail gas, which belongs to the field of tail gas treatment. Background technique [0002] Fluorite, also known as fluorspar, is a mineral with an equiaxed crystal system, and its main component is calcium fluoride (molecular formula CaF 2 ), due to the different mixtures of impurities such as iron, aluminum, silicon, calcium, sulfur, etc., the appearance is white, yellow, purple, green, etc. Fluorite is mostly used in the preparation of hydrofluoric acid to further prepare fluorine-containing inorganic salts and fluorine-containing organic chemicals. In the production of hydrofluoric acid, it is required to strictly control the water content of fluorite below a certain level, so the fluorite must be dried. Fluorite drying tail gas contains a lot of dust and a small amount of sulfur dioxide; in addition, fluorite contains a small amount of flotation agent (mostly high-boiling point organ...

Claims

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Application Information

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IPC IPC(8): B01D53/75B01D53/78B01D53/86B01D53/96B01D50/00B01D53/00B01D53/02B01D53/50
CPCB01D53/75B01D53/002B01D53/78B01D53/502B01D53/02B01D53/007B01D53/8678B01D53/96B01D2251/304B01D2251/306B01D2251/604B01D2259/804B01D2257/90B01D2257/702B01D50/20
Inventor 路延军王鑫徐强崔守明贾超杨英杰
Owner SHANDONG DONGYUE CHEM