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Tail gas sampling device and method for chlorination volatilization system

A sampling device and chlorination volatilization technology, applied in sampling devices, sampling, measuring devices, etc., can solve the problems of pipe wall pollution, no tail gas sampling device, poor cotton adsorption effect, etc., to achieve strong adaptability, improve accuracy and Sampling efficiency, good cohesion capture effect

Pending Publication Date: 2021-04-02
山东国环固废创新科技中心有限公司 +3
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Valuable elements in cyanidation tailings can be recovered efficiently; however, the design of some parts of the project still needs to be optimized, mainly focusing on the design of the flue gas washing system; the tail gas of the chlorination volatilization system exists in the form of aerosol, Without a suitable exhaust gas sampling device, it is difficult to determine whether gold is lost in the exhaust gas; once stuffed cotton in the exhaust gas pipe for adsorption, stayed for a certain period of time, took out the cotton for fire detection
Due to the relatively poor adsorption effect of cotton, limited sampling volume, and easy contamination by pipe walls during the process of taking and placing, the measurement error of gold is relatively large, and the location and amount of gold loss cannot be determined, and the transformation plan cannot be effectively proposed. Therefore, it is urgent It is necessary to design and prepare a set of equipment and methods suitable for exhaust gas sampling

Method used

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  • Tail gas sampling device and method for chlorination volatilization system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Example 1, a method for sampling the flue gas of the chlorination and volatilization system was applied in the Xinjiang chlorination and volatilization system. This time, the sampling and testing work was mainly carried out on the tail gas after 2# electrostatic demisting. Its process flow chart is as figure 1 shown, including the following steps:

[0035] A method for sampling tail gas of a chlorination volatilization system, specifically comprising the following steps:

[0036] S1. Sampling device installation

[0037] 1 set of water ring vacuum pump, 1 set of LZB-25 glass rotameter (range 1.6-16m 3 / h), 1 pear-shaped funnel, 1 2500ml suction filter bottle, 3 wide-mouth bottles, 663.79g of activated carbon, several rubber hoses and rubber stoppers, etc. Drill and assemble it so that the extracted exhaust gas passes through in sequence: pear-shaped funnel (the effect of condensing flue gas)-suction filter bottle (collecting flue gas condensate)-jar (built-in activat...

Embodiment 2

[0044] Example 2, a method for sampling the flue gas of the chlorination volatilization system was applied in the chlorination volatilization system in Gansu. This time, the sampling and testing work was mainly performed on the tail gas after the chlorination volatilization absorption system.

[0045] Include the following steps:

[0046] S1. Sampling device installation

[0047] 1 set of water ring vacuum pump, 1 set of LZB-25 glass rotameter (range 1.6-16m 3 / h), 3 spherical condenser tubes, 1 2500ml suction filter bottle, 3 jars, 400g activated carbon, rubber hoses and rubber stoppers, etc.

[0048] It is drilled and assembled so that the extracted exhaust gas passes through in sequence: spherical condenser tube (condensed flue gas effect) - suction filter bottle (collected flue gas condensate) - wide mouth bottle (built-in activated carbon, residual gas absorption) - flow meter (display flow 2.2m 3 / h) - vacuum pump.

[0049] S2. On-site positioning and sampling of the ...

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Abstract

The invention discloses a tail gas sampling device and method for a chlorination volatilization system. The tail gas sampling device comprises a cooling device, a condensate collecting device, a residual gas absorbing device, a flow meter and a vacuum pump which are connected in sequence. The tail gas sampling method for the chlorination volatilization system comprises the steps of mounting the sampling device; positioning and sampling on site by the sampling device; treating and analyzing the sample; and performing data processing. The device fills up the blank in the aspect of sampling analysis of flue gas of a chlorination volatilization system, has a good coagulation capture effect on gold-containing aerosol with the size of 0.001-100[mu]m, improves the sampling accuracy and sampling efficiency, is high in adaptability, achieves flexible sampling according to production requirements, facilitates on-site process investigation, provides data support for on-site transformation, and effectively overcomes the defect that tailings are difficult to sample and measure.

Description

technical field [0001] The invention relates to the technical field of flue gas sampling and processing, in particular to a tail gas sampling device of a chlorination volatilization system and a method thereof. Background technique [0002] The existing gold extraction process at home and abroad is mainly the process of extracting gold and silver by using cyanide or low-cyanide environmental protection agents as leaching agents after pretreatment. This process can only recover gold and silver in minerals, and cannot comprehensively recover gold and silver in ores. Valuable metals, chemical gold extraction process is a new process and new technology with international advanced level, and it is an effective way to realize the conversion of cyanide slag from hazardous waste to general solid waste. At the same time, it can efficiently recover valuable elements in cyanide slag. promotion and application prospects. [0003] The chlorination volatilization system is the most impor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/22G01N1/34
CPCG01N1/2258G01N1/34
Inventor 马鹏程姜桂鹏栾作春王苹李玉玺豆娜赵福财杨鹏彭剑平李皊值邵鹏董国强
Owner 山东国环固废创新科技中心有限公司
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