Sampling and quantitative analysis method in pyrolysis production process of solid fuels

A production process and solid fuel technology, applied in the direction of material separation, material analysis, measuring devices, etc., to achieve the effects of fast analysis, easy condition optimization, and simple operation of the method

Active Publication Date: 2014-05-28
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the defect that it is difficult to quickly quantitatively analyze the total liquid yield in the pyrolysis process of the pilot scale and above

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] During the pilot operation of solid heat carrier moving bed pyrolysis with coal as raw material, the yield of pyrolysis gas and pyrolysis liquid is quantified through the sampling system. When the sampling starts, open the valve on the sampling pipeline and record the starting time. During the sampling process, part of the high-temperature volatile matter generated by the pyrolysis unit is pumped into the bypass sampling system through the oil rotary vane vacuum pump, and then enters the 5 stage gas-liquid condensation separation system, the temperature of the first stage is 60°C, and the last four stages are ice-water baths at 0°C. After condensation, the liquid is stored in the container, and the non-condensable gas is vented after the flow is measured by the wet gas flowmeter. 1.6m into the pyrolysis reactor 3 / h Nitrogen is used as the internal standard gas, and the non-condensable gas flowing through the vent pipe is sampled with a gas sample bag, and the gas compo...

Embodiment 2

[0064] During the pilot operation of solid heat carrier moving bed pyrolysis with biomass as raw material, the yield of pyrolysis gas and pyrolysis liquid is quantified through the sampling system. When the sampling starts, open the valve on the sampling pipeline and record the starting time. During the sampling process, part of the high-temperature volatile matter generated by the pyrolysis unit is pumped into the bypass sampling pipeline through the oil rotary vane vacuum pump, and deashed by the cyclone separator. Enter the 5-stage gas-liquid condensation separation system, the temperature of the first stage is 60°C, and the last stage is a low-temperature bath of ethylene glycol aqueous solution at -5°C. After condensation, the liquid is stored in the container, and the flow rate of non-condensable gas is measured by a wet gas flowmeter. In the process of sampling, 1.1m 3 / h Nitrogen is used as the internal standard gas, and the non-condensable gas flowing through the vent...

Embodiment 3

[0067] During the pilot run of down-bed pyrolysis with high-temperature wall surface radiation heating using oil shale as raw material, the yield of pyrolysis gas and pyrolysis liquid was quantified through the sampling system. When the sampling starts, open the valve on the sampling pipeline and record the starting time. During the sampling process, part of the high-temperature volatile matter generated by the pyrolysis unit is pumped into the bypass sampling pipeline through the diaphragm pump, and enters the 5th grade gas after being deashed by the filter. Liquid condensation separation system, the temperature of the first stage is 80°C, and the last four stages are ice-water baths at 0°C. After condensation, the liquid is stored in the container, and the non-condensable gas is released after the flow rate is measured by the wet gas flowmeter. 1.5m into the reactor 3 / h Nitrogen is used as the internal standard gas, and the non-condensable gas flowing through the vent pipe ...

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Abstract

The invention relates to a sampling and quantitative analysis method in the pyrolysis production process of solid fuels. According to the method, volatile separate samples are collected from bypasses of a pyrolysis reactor, and then are quantified to obtain the yield of total liquid products and/or the yield of total gas products in the pyrolysis production process. Different from the method that the yield of liquid products obtained by the conventional industrial and pilot plant is quantified only through liquid cumulant within a certain running time, the method provided by the invention can rapidly quantify the oil and gas yield in the pyrolysis industrial process and the pilot test process so as to rapidly evaluate operation conditions.

Description

technical field [0001] The invention relates to the technical field of energy conversion and sampling, in particular to a sampling and quantitative analysis method in the pyrolysis production process of solid fuel. Background technique [0002] Pyrolysis technology is an important way for the high-value application of solid fuels such as coal, biomass, and oil shale. Pyrolysis produces three types of pyrolysis products: pyrolysis gas (such as coal gas, biomass pyrolysis gas, and shale gas) ), pyrolysis oils (such as coal tar, bio-oil and shale oil) and solid semi-coke. For industrial processes with stable working conditions, the obtained pyrolysis oil yield is the pyrolysis oil yield within a certain operating cycle range. Due to the large scale of industrial equipment, it takes a long time (possibly several weeks to several months) and a large amount of raw materials to form quantifiable pyrolysis oil products. If the working conditions need to be adjusted, it must take a ...

Claims

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Application Information

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IPC IPC(8): G01N5/00G01N30/02
Inventor 王泽宋文立林伟刚李松庚都林范垂钢郝丽芳
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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