CN106404585A - Method for material balance analysis of biomass pyrolysis process - Google Patents
Method for material balance analysis of biomass pyrolysis process Download PDFInfo
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- CN106404585A CN106404585A CN201610712092.5A CN201610712092A CN106404585A CN 106404585 A CN106404585 A CN 106404585A CN 201610712092 A CN201610712092 A CN 201610712092A CN 106404585 A CN106404585 A CN 106404585A
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/04—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder
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Abstract
The present invention provides a method for material balance analysis of a biomass pyrolysis process, the method is as follows: mass of a raw material, mass of a produced liquid product and mass of a produced solid product can be calculated by a difference weight method, a volume of a produced gaseous product can be calculated by a gas flow meter, gas components can be determined by gas chromatography, the mass of the gaseous product can be calculated, according to the ratio of the mass of the products and the mass of the raw material, device material balance analysis is performed to obtain a liquid product yield, a solid product yield, a gaseous product yield and a material balance percentage. The mass of the produced liquid product, the mass of the produced solid product and the mass of the gaseous product of a thermal cracking reaction can be accurately determined by the method, through the material balance percentage, device design effect and operation state can be evaluated, and fine research on the biomass thermal cracking reaction is facilitated.
Description
Technical field
A kind of the present invention relates to biomass energy technology field, in particular it relates to analysis biomass through pyrolysis process materials
The method of balance.
Background technology
Biomass fermentation heat cracking reaction, can obtain three kinds of products, respectively liquid biological oil, solid-state charcoal and not
Condensable gases.Wherein：Liquid biological oil can be processed further producing the raw material of chemical industry, or gasoline as an alternative
Fuel；Charcoal can be used as the raw material of the modifying agent of soil or activated carbon；Condensible gas can not fire as fuel gas
Burn heat supply.The quality composition of the solid-liquid gaseous products generating when therefore analyzing biomass fermentation heat cracking reaction, has the meaning of reality
Justice.
Difficult quality due to gaseous material measures, therefore before research in usually gaseous material is measured with difference weight method
Quality, that is, the quality participating in reaction raw materials deducts the quality of liquid product and solid product, but often error larger it is difficult to anti-
Reflect real response situation.
Through retrieval, Publication No. 102788884A, the Chinese invention patent of Application No. 201210271544.2, this invention
Disclose a kind of method of on-line checking biomass thermal chemical reaction gas phase intermediate product, methods described includes biomass material heat
Chemical reaction, cyclonic separation, coarse filtration, the step of electrically trapped tar oil, secondary filter and the sampling of gas phase intermediate product.Methods described can
Cool down the problems such as denaturation, impurity blocking analytical instrument pipeline to be effectively prevented from gas phase intermediate product before analysis it is achieved that right
Gas phase intermediate product during biomass through pyrolysis pyrolysis charring, liquefaction or gasification reaction is carried out component detection and is divided with composition
Analysis.
But patent is disadvantageous in that, can only be theoretical research to be carried out to thermal chemical reaction, before there is no commercial Application
Scape.And due to being to the gas direct measurement after cracking, high-temperature gas is unstable, easily changes in the measurements, measurement
Data error larger.
Content of the invention
For defect of the prior art, it is an object of the invention to provide a kind of analysis biomass through pyrolysis process materials are put down
The method of weighing apparatus, using volume and the content of gas flowmeter and gas chromatograph for determination gaseous products, then calculates gaseous mass,
More can accurately reflect the Mass Distribution situation of thermal cracking products it is possible to the design effect of evaluating apparatus and run shape
State.
For realizing object above, the present invention provides a kind of method of analysis biomass through pyrolysis process materials balance, described
Method comprises the steps：
The first step, using difference weight method calculate participate in reaction raw materials quality, the quality of liquid product, the quality of solid product；
Second step, the volume using gas flowmeter and gas chromatograph for determination gaseous products and component, calculate gaseous state and produce
The weight of thing；
3rd step, according to the first step and second step obtain participate in the liquid product of reaction raw materials and generation, solid product,
The weight of gaseous products, carries out the Balancing Analysis of Charges of device：
Liquid product yield is liquid product quality and the percentage participating in reaction raw materials quality；
Solid product yield is solid product quality and the percentage participating in reaction raw materials quality；
Gaseous product yields are gaseous products quality and the percentage participating in reaction raw materials quality；
Material balance percentage is total product mass and the percentage participating in reaction raw materials quality.
Preferably, in the first step, the described quality participating in reaction raw materials is calculated by difference weight method, specifically：
Weigh material mass before reaction first, then after completion of the reaction, weigh the material quality not participating in reaction, both
Difference be participate in reaction material quality.
Preferably, in the first step, calculate the quality of described liquid product by difference weight method, specifically：
Weigh the quality of liquid product empty first, then after reaction is carried out completely, weigh equipped with liquid product
Container mass, both differences are the quality of the liquid product that reaction generates.
Preferably, in the first step, calculate the quality of described solid product by difference weight method, specifically
Weigh the quality of solid product empty first, then after reaction is carried out completely, weigh equipped with solid product
Container mass, both differences are the quality of the solid product that reaction generates.
Preferably, in second step, comprise the steps：
1) gas flowmeter is utilized to calculate the volume of described gaseous products, specifically：
Gas flowmeter registration before record reaction occurs first, then after reaction is carried out completely, record reaction occurs
Gas flowmeter registration afterwards, both differences are the volume of the gaseous products that reaction generates；
2) component of gas chromatograph for determination gaseous products, i.e. carbon monoxide, methane, carbon dioxide, ethene, second are utilized
Alkane, propylene, the content of normal butane；
3) according to 1) and 2) volume of each gaseous products that obtains and component, calculate the quality of each gas component, so
It is added the gross mass obtaining gaseous products afterwards.
Material balance is to weigh the important indicator of device air-tightness and stability, when device is stable, does not consider operating error
When, enter the raw material of device how many quality, the product of how many quality will be generated, at this moment material balance percentage is 100%, and
And the yield of each product of the experiment of different batches is constant.But device occurs unavoidably in running and cannot feed completely
Entirely, product is revealed, and weighs and the problems such as operating mistake, and therefore material balance percentage is less than 100%, and the experiment of different batches is each
Products collection efficiency has difference, therefore passes through analysis material balance and just can easily assess the stability of this reaction, air-tightness
And operation normative the problems such as.And want the yield of monitoring objective product in commercial Application, when discovery target product just deviates
When constant value, to be adjusted in time, and Balancing Analysis of Charges is it is provided that the product of the yield of target product and gross product
Rate, therefore has the using value of reality.
Compared with prior art, the present invention has following beneficial effect：
The liquid that the present invention can be produced with Accurate Determining heat scission reaction, the quality of solid-state and gaseous products；Can pass through
Material balance percentage, the design effect of evaluating apparatus and running status；Convenient biomass through pyrolysis are reacted finely is ground
Study carefully.
Specific embodiment
With reference to specific embodiment, the present invention is described in detail.Following examples will be helpful to the technology of this area
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill to this area
For personnel, without departing from the inventive concept of the premise, some deformation can also be made and improve.These broadly fall into the present invention
Protection domain.
The present invention provides a kind of method of analysis biomass through pyrolysis process materials balance, specific enforcement presented below
Example, it comprises the steps：
1st, calculate the material quality participating in reaction
Before reaction, the material quality of adding apparatus is 512.2g；Reaction terminates remaining material quality in rear device and is
418.8g；The material quality therefore participating in reaction is 512.2-418.8=93.4g.
2nd, calculate the quality of the liquid product that reaction generates
Before reaction, the quality of liquid product container is：59.3g；Reaction terminates rear liquid product and the quality of container is：
108.5g；The quality therefore reacting the liquid product of generation is：108.5-59.3=49.2g.
3rd, calculate the quality of the solid product that reaction generates
Before reaction, the quality of solid product container is：122.4g；Reaction terminates rear solid product and the quality of container is：
142.2g；The quality therefore reacting the solid product of generation is：142.2-122.4=19.8g.
4th, calculate the volume of the gaseous products that reaction generates：
Gas flowmeter registration before reaction is：65.657m3；Reaction terminates rear gas flowmeter registration and is：66.123m3；
The volume therefore reacting the gaseous products of generation is：66.123-65.657=0.466m3.
5th, calculate the component of the gaseous products that reaction generates
It is respectively by the component of the gaseous products of gas Chromatographic Determination：Carbon monoxide is 1.85%, and methane is 0.44%,
Carbon dioxide is 0.70%, and ethene is 0.26%, and ethane is 0.18%, and propylene is 0.03%, and normal butane is 0.09%.
6th, calculate the quality of the gaseous products that reaction generates
Carbon monoxide is 9.88g, and methane is 1.34g, and carbon dioxide is 5.85g, and ethene is 1.40g, and ethane is 1.05g,
Propylene is 0.20g, and normal butane is 0.98g；The gross mass of therefore gaseous products is 20.71g.
7th, the Balancing Analysis of Charges of device
The yield of liquid product is：49.2/93.4*100%=52.7%；
The yield of solid product is：19.8/93.4*100%=21.2%；
The yield of gaseous products is：20.71/93.4*100%=22.2%；
Material balance percentage is：96.1%.
The present invention adopts volume and the content of gas flowmeter and gas chromatograph for determination gaseous products, then calculates gas
Quality, can accurately reflect the Mass Distribution situation of thermal cracking products it is possible to the design effect of evaluating apparatus and run shape
State.
The quality of liquid, solid-state and gaseous products that the present invention can be produced with Accurate Determining heat scission reaction；The present invention can
With by material balance percentage, the design effect of evaluating apparatus and running status；The present invention is convenient anti-to biomass through pyrolysis
Scrutiny should be carried out.
Above the specific embodiment of the present invention is described.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can make various modifications or modification within the scope of the claims, this not shadow
Ring the flesh and blood of the present invention.
Claims (5)
1. a kind of method of analysis biomass through pyrolysis process materials balance is it is characterised in that methods described comprises the steps：
The first step, using difference weight method calculate participate in reaction raw materials quality, the quality of liquid product, the quality of solid product；
Second step, the volume using gas flowmeter and gas chromatograph for determination gaseous products and component, calculate gaseous products
Weight；
3rd step, participate in the liquid product of reaction raw materials and generation, solid product, gaseous state according to what the first step and second step obtained
The weight of product, carries out the Balancing Analysis of Charges of device：
Liquid product yield is liquid product quality and the percentage participating in reaction raw materials quality；
Solid product yield is solid product quality and the percentage participating in reaction raw materials quality；
Gaseous product yields are gaseous products quality and the percentage participating in reaction raw materials quality；
Material balance percentage is total product mass and the percentage participating in reaction raw materials quality.
2. a kind of method of analysis biomass through pyrolysis process materials balance according to claim 1 is it is characterised in that the
In one step, the described quality participating in reaction raw materials is calculated using difference weight method, specially：
Weigh material mass before reaction first, then after completion of the reaction, weigh the material quality not participating in reaction, both differences
Value is the material quality participating in reaction.
3. a kind of method of analysis biomass through pyrolysis process materials balance according to claim 1 is it is characterised in that the
In one step, calculate the quality of described liquid product using difference weight method, specially：
Weigh the quality of liquid product empty first, then after reaction is carried out completely, weigh the container equipped with liquid product
Quality, both differences are the quality of the liquid product that reaction generates.
4. a kind of method of analysis biomass through pyrolysis process materials balance according to claim 1 is it is characterised in that the
In one step, calculate the quality of described solid product using difference weight method, specifically
Weigh the quality of solid product empty first, then after reaction is carried out completely, weigh the container equipped with solid product
Quality, both differences are the quality of the solid product that reaction generates.
5. the method for a kind of analysis biomass through pyrolysis process materials balance according to any one of claim 1-4, it is special
Levy and be, in second step, comprise the steps：
1) gas flowmeter is utilized to calculate the volume of described gaseous products：
Gas flowmeter registration before record reaction occurs first, then after reaction is carried out completely, after record reaction occurs
Gas flowmeter registration, both differences are the volume of the gaseous products that reaction generates；
2) utilize gas chromatograph for determination gaseous products component, that is, carbon monoxide, methane, carbon dioxide, ethene, ethane, third
Alkene, the content of normal butane；
3) according to 1) and 2) volume of each gaseous products that obtains and component, calculate the quality of each gas component, Ran Houxiang
Plus obtain the gross mass of gaseous products.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| UA68874C2 (en) * | 2003-11-14 | 2007-04-25 | L M Lytvynenko Inst Of Physica | Method for determining the content of pyrolysis of coal |
| CN101846642A (en) * | 2010-05-21 | 2010-09-29 | 中国科学院山西煤炭化学研究所 | Fast pyrolytic test device and application |
| CN103344537A (en) * | 2013-06-05 | 2013-10-09 | 太原理工大学 | Test method for high-temperature high-pressure pyrolysis reaction |
-
2016
- 2016-08-23 CN CN201610712092.5A patent/CN106404585A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| UA68874C2 (en) * | 2003-11-14 | 2007-04-25 | L M Lytvynenko Inst Of Physica | Method for determining the content of pyrolysis of coal |
| CN101846642A (en) * | 2010-05-21 | 2010-09-29 | 中国科学院山西煤炭化学研究所 | Fast pyrolytic test device and application |
| CN103344537A (en) * | 2013-06-05 | 2013-10-09 | 太原理工大学 | Test method for high-temperature high-pressure pyrolysis reaction |
Non-Patent Citations (3)
| Title |
|---|
| 全国勘察设计注册工程师环保专业管理委员会、中国环境保护产业协会: "《注册环保工程师专业考试复习教材 第2分册》", 31 December 2011 * |
| 王建飞: "烟煤与生物质快速共热解产物特性分析", 《燃料化学学报》 * |
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