CN110616090A - Method for in-situ conversion treatment of byproduct tar by using gas producer - Google Patents

Method for in-situ conversion treatment of byproduct tar by using gas producer Download PDF

Info

Publication number
CN110616090A
CN110616090A CN201910895589.9A CN201910895589A CN110616090A CN 110616090 A CN110616090 A CN 110616090A CN 201910895589 A CN201910895589 A CN 201910895589A CN 110616090 A CN110616090 A CN 110616090A
Authority
CN
China
Prior art keywords
tar
gas
coal
light
byproduct
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN201910895589.9A
Other languages
Chinese (zh)
Inventor
苑卫军
李建胜
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TANGSHAN KEYUAN ENVIRONMENT PROTECTION EQUIPMENT CO Ltd
Original Assignee
TANGSHAN KEYUAN ENVIRONMENT PROTECTION EQUIPMENT CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by TANGSHAN KEYUAN ENVIRONMENT PROTECTION EQUIPMENT CO Ltd filed Critical TANGSHAN KEYUAN ENVIRONMENT PROTECTION EQUIPMENT CO Ltd
Priority to CN201910895589.9A priority Critical patent/CN110616090A/en
Publication of CN110616090A publication Critical patent/CN110616090A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/72—Other features
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J2300/00—Details of gasification processes
    • C10J2300/12—Heating the gasifier
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J2300/00—Details of gasification processes
    • C10J2300/16—Integration of gasification processes with another plant or parts within the plant

Abstract

The invention relates to a method for converting a byproduct of a gas producer, in particular to a method for performing resource conversion treatment on the byproduct tar by using the gas producer. Heavy tar is distilled by utilizing the hot coal gas ascending in the furnace in the dry distillation section of the coal gas producer, and the distillation product asphalt descends along with the coal material to the gasification reaction section for gasification to produce CO and H2Coal gas as the main combustible component; the hot flue gas generated after the light tar is burnt, air and water vapor form a gasifying agent, the gasifying agent is blown into the furnace from the bottom of the gas producer to participate in gasification reaction, the physical heat supplementary reaction heat brought by the hot flue gas and CO brought by the hot flue gas2The reaction substance participates in gasification reaction, can offset partial heat release of coal combustion and CO generation2. Compared with the prior art, the method can convert and treat the byproduct tar in situ, and can achieve the effect of saving coal resources.

Description

Method for in-situ conversion treatment of byproduct tar by using gas producer
Technical Field
The invention relates to a method for converting a byproduct of a gas producer, in particular to a method for performing resource conversion treatment on the byproduct tar by using the gas producer.
Background
The coal gas producer byproduct tar belongs to low-temperature pyrolysis tar, generally 40-70kg of tar is generated when 1000kg of coal is gasified, and the tar contains about 20% of light tar. Coal tar has been used as fuel for melting glass in domestic glass melting furnaces, but because coal tar atomization difficulty is high, incomplete atomization can cause increase of smoke exhaust particles of the furnaces, blackness is increased, and environmental pollution is high, so that the application of the coal tar as the fuel is greatly limited.
At present, the separated and dehydrated tar is generally sold by domestic producer gas stations and entrusted to downstream tar deep processing enterprises for disposal. The low-temperature coal tar contains various organic components, can extract phenols, alkanes, aromatic hydrocarbons and the like, can be used for preparing engine fuel oil such as gasoline, diesel oil and the like which meet the specification of petroleum products by appropriate deep processing means such as catalytic hydrogenation, can also be used for preparing paraffin, lubricating oil, pyridyl, fatty amine and the like, and can be used for preparing light diesel oil and electrode coke by coking the contained asphalt.
At present, the national environmental protection-based control on coal tar byproduct of a gas station is becoming strict. In the national hazardous waste record carried out in 2016, 8, 1, the byproduct tar of the gas producer is listed as hazardous waste, wherein the category number of the tar is HW11, and the code number is 450-003-11. The gas station of the producer must carry out the normative management of collection, storage, transportation and transfer of the byproduct tar and the tar residues according to the regulations of the hazardous waste storage pollution control standard (GB 18597-2001) and the hazardous waste transfer union administration method (No. 5 of the State environmental protection agency) issued and implemented in 1999.
In view of the above, most enterprises desire that the tar byproduct of the gas station can be recycled and disposed in the gas station in a harmless and on-site manner, and the tar is not transported or transferred. In addition, for countries such as India, Africa and southeast Asia, the downstream tar deep processing industry is lacked, the byproduct tar of the gas station cannot be entrusted to be disposed, and only needs to be transported out for landfill disposal, the tar pollution problem is prominent, and the popularization and the application of the gas producer are severely restricted.
Disclosure of Invention
The invention aims to overcome the defects of the background technology and provides a method for carrying out on-site conversion treatment on the byproduct tar by using a gas producer.
The invention adopts the following technical scheme:
a method for carrying out in-situ conversion treatment on byproduct tar by using a gas producer comprises the following steps:
1) separating the byproduct tar of the gas producer to obtain heavy tar, distilling the heavy tar in a dry distillation section of the gas producer by using hot coal gas with the temperature of 500-600 ℃ which ascends in the furnace, and leading the distillation product asphalt to descend along with coal materials to a gasification reaction section for gasification to generate CO and H2The other part of the distillation product forms light tar which is the coal gas of the main combustible component and returns to the tar tank to participate in tar separation and then is further converted;
2) the hot flue gas generated after the light tar is burnt, air and water vapor form a gasifying agent, the gasifying agent is blown into the furnace from the bottom of the gas producer to participate in gasification reaction, and the physical heat and CO of the hot flue gas2Is carried into the gas producer along with the gasifying agent; wherein the physical heat brought by the hot flue gas supplements part of the reaction heat required by the gasification reaction, and the CO brought by the hot flue gas2The reaction substance participates in gasification reaction, can offset part of heat release of coal combustion and generate CO2。
Compared with the prior art, the method adopting the technical scheme can convert and treat the byproduct tar in situ, and can achieve the effect of saving coal resources.
The preferred scheme of the invention is as follows:
and (2) condensing the coal gas generated in the coal gas generating furnace in the coal gas purifying and cooling process to separate out tar, conveying the tar to a tar separator through a tar pump, heating the tar in the tar separator to 58-65 ℃, standing for 3-4 hours, then respectively preparing light tar, phenol water and heavy tar from top to bottom in the tar separator, discharging the light tar to a light tar storage tank, separately treating the phenol water, and discharging the heavy tar to a heavy tar storage tank.
The heavy tar is regularly and quantitatively sprayed onto the coal material in the coal gas generator from the top of the coal gas generator through a spray control system, the heavy tar is coated on the heavy tar, moves downwards along with the coal material at a speed of 0.008-0.012 m/min in a dry distillation section of the coal gas generator, is heated and distilled by the upstream high-temperature hot coal gas of 500-600 ℃ in the downward movement process of the tar, and generates light distillate in the tar heating and distilling processSeparating the natural residue asphalt; the light fraction is led out of the generating furnace along with the coal gas in a gaseous form, condensed into light tar in the coal gas cooling process and led into a tar tank; the solid residual asphalt moves downwards along with the coal material, and the solid residual asphalt enters a gasification reaction section of the coal gas producer to participate in gas making reaction together with the coal material to generate CO and H2Is coal gas with main combustible gas component.
The light tar is used as fuel and is combusted from a light tar storage tank to a fuel oil hot blast stove through a light tar pump; the induced draft fan is from the hot-blast stove of the fuel oil to draw out the flue gas and outside air that the light tar burns produces and become the hot air of poor oxygen, the hot air of poor oxygen is introduced to the gasifying agent mixer, in the gasifying mixer, the hot air of poor oxygen is reported and regarded as the gasifying agent after fully mixing with water vapor, blow into the stove from the bottom of the gas producer; physical heat and CO brought into the furnace by the oxygen-deficient hot air2The heat and the reaction substances required by part of the gasification reaction are supplemented, so that the heat release and CO generation of part of coal can be counteracted2Thereby achieving the effect of saving coal resources.
The top spraying system of the gas producer sprays once for 1h, and the continuous spraying time of each time is 8-12 min.
In the step 1), the distillation product with the mass ratio of 65-75% forms light tar.
Drawings
Fig. 1 is a schematic structural view of the present invention.
In the figure: the system comprises a gas producer 1, a gas cooling and purifying system 2, a tar tank 3, a tar pump 4, a tar separator 5, a heavy tar storage tank 6, a heavy tar pump 7, a spray control system 8, a light tar storage tank 9, a light tar pump 10, a fuel oil hot-blast stove 11, an induced draft fan 12 and a gasifying agent mixer 13.
Detailed Description
The invention is described in detail below with reference to the following figures and examples:
the gasification reaction of the gas producer 1 takes coal as a gasification raw material and air and water vapor as a gasification agent, and the gas production process can be understood by two steps: first, air passes through the fuel bed, C and O2An exothermic reaction occurs to provide heat and reactant CO for the next reaction2(ii) a Followed by steam and air mixing through the fuel bed, C with H2O、O2And CO2The method has the advantages that the method generates a mixed reaction of heat absorption and heat release to generate producer gas, omits a plurality of intermediate reactions, and can simplify the gasification reaction process of the producer gas as follows:
C+O2=CO2；△H=-409 KJ/mol （1）
CO2+C=2CO；△H=162KJ/mol （2）
C+H2O=CO+H2；△H=119 KJ/mol （3）
in this embodiment, the method for performing in-situ conversion treatment on the byproduct tar by using the gas producer comprises the following steps:
(1) collecting tar oil: the coal gas produced by the coal gas producer 1 is condensed to separate out tar in the coal gas purification and cooling process, and the tar is collected in a tar tank 3 for storage.
(2) Tar separation: the tar is pumped from the tar tank 3 to a tar separator 5 by a tar pump 4, the tar is heated to about 60 ℃ in the tar separator, and then left to stand for about 3 hours, and heavy tar, phenol water and light tar are separated according to the difference of mass density (after heating and standing, the tar separator is respectively light tar, phenol water and heavy tar from top to bottom). Discharging the heavy tar into a heavy tar storage tank 6; discharging the light tar into a light tar storage tank 9; and discharging the phenol water to a phenol water pool for further disposal.
(3) Conversion and disposal of heavy tar: the heavy tar is pumped from the heavy tar storage tank 6 to the top of the gas producer 1 through a heavy tar pump 7, and the heavy tar is sprayed on the coal in the gas producer 1 from the top of the gas producer 1 in a timing and quantitative manner (for example, spraying for once every 1h and continuously spraying for 10min each time) through a spraying control system 8. The heavy tar covered on the coal material moves downwards at a speed of about 0.01m/min along with the coal material in a dry distillation section of the coal gas producer 1, the tar is subjected to countercurrent heating distillation of ascending high-temperature coal gas (500-600 ℃) in the downward moving process, and light fractions such as light tar and solid residue asphalt are generated in the tar distillation process. Wherein light fractions such as light tarThe gas is led out of the generating furnace along with the coal gas in a gaseous form, condensed into light tar in the coal gas cooling process and led into a tar tank 3; the solid residual asphalt moves downwards along with the coal material, enters a gasification reaction section of the gas producer and participates in gas making reaction together with the coal material to generate CO and H2Coal gas which is the main combustible component. And the other part of the distillation product which accounts for about 70 percent of the mass ratio forms light tar, and the light tar returns to the tar tank 3 to participate in tar separation and then is further converted.
(4) And (3) light tar disposal: the light tar is used as fuel (the light tar is easy to atomize and is more completely combusted than the heavy tar), and is pumped from a light tar storage tank 9 to a fuel hot-blast stove for combustion 11 through a light tar pump 10. The induced draft fan leads out the smoke generated by the light tar combustion and the outside air from the oil hot blast stove 11 to become oxygen-deficient hot air (O)2About 18-20 percent and about 120-150 ℃, and the oxygen-poor hot air is introduced into a gasifying agent mixer 13, and is fully mixed with water vapor to be used as a gasifying agent and blown into the furnace from the bottom of the gas producer 1. Physical heat and CO brought into the furnace by the oxygen-deficient hot air2Can supplement a part of reaction heat quantity (combustion value is determined according to the actual supplement quantity, such as the actual volume of the coal gas producer and the actual oxygen-deficient hot air entering the coal gas producer 1) and reaction substances required by the gasification reaction, can offset the heat release of a part of coal combustion and generate CO2Thereby achieving the effect of saving coal resources (otherwise, the part of reaction heat and reactant CO2All coal is provided in the combustion process of the oxide layer of the gas producer).

Claims (6)

1. A method for carrying out in-situ conversion treatment on byproduct tar by using a gas producer comprises the following steps:
1) separating the byproduct tar of the gas producer to obtain heavy tar, distilling the heavy tar in a dry distillation section of the gas producer by using hot coal gas with the temperature of 500-600 ℃ which ascends in the furnace, and leading the distillation product asphalt to descend along with coal materials to a gasification reaction section for gasification to generate CO and H2The coal gas is the main combustible component, and the other part of the distillate is in the form ofForming light tar, returning the light tar to a tar tank to participate in tar separation, and then further converting;
2) the hot flue gas generated after the light tar is burnt, air and water vapor form a gasifying agent, the gasifying agent is blown into the furnace from the bottom of the gas producer to participate in gasification reaction, and the physical heat and CO of the hot flue gas2Is carried into the gas producer along with the gasifying agent; wherein the physical heat brought by the hot flue gas supplements part of the reaction heat required by the gasification reaction, and the CO brought by the hot flue gas2The reaction substance participates in gasification reaction, can offset part of heat release of coal combustion and generate CO2。
2. The method of claim 1, wherein the gas producer is used for in-situ conversion treatment of tar byproduct, and the method comprises the following steps: and (2) condensing the coal gas generated in the coal gas generating furnace in the coal gas purifying and cooling process to separate out tar, conveying the tar to a tar separator through a tar pump, heating the tar in the tar separator to 58-65 ℃, standing for 3-4 hours, then respectively preparing light tar, phenol water and heavy tar from top to bottom in the tar separator, discharging the light tar to a light tar storage tank, separately treating the phenol water, and discharging the heavy tar to a heavy tar storage tank.
3. The method of claim 1, wherein the gas producer is used for in-situ conversion treatment of tar byproduct, and the method comprises the following steps: the heavy tar is regularly and quantitatively sprayed onto the coal material in the coal gas generator from the top of the coal gas generator through a spray control system, the heavy tar is covered on the heavy tar, moves downwards along with the coal material at a speed of 0.008-0.012 m/min in a dry distillation section of the coal gas generator, is heated and distilled by the upstream high-temperature hot coal gas at 500-600 ℃ in the downward movement process of the tar, and produces light fraction and natural residual asphalt in the tar heating and distilling process; the light fraction is led out of the generating furnace along with the coal gas in a gaseous form, condensed into light tar in the coal gas cooling process and led into a tar tank; the solid residual asphalt continuously moves downwards along with the coal material, and the solid residual asphalt and the coal material enter a gasification reaction section of the coal gas producer to participate in gas making reaction togetherTo form CO and H2Is coal gas with main combustible gas component.
4. The method of claim 1, wherein the gas producer is used for in-situ conversion treatment of tar byproduct, and the method comprises the following steps: the light tar is used as fuel and is combusted from a light tar storage tank to a fuel oil hot blast stove through a light tar pump; the induced draft fan is from the hot-blast stove of the fuel oil to draw out the flue gas and outside air that the light tar burns produces and become the hot air of poor oxygen, the hot air of poor oxygen is introduced to the gasifying agent mixer, in the gasifying mixer, the hot air of poor oxygen is reported and regarded as the gasifying agent after fully mixing with water vapor, blow into the stove from the bottom of the gas producer; physical heat and CO brought into the furnace by the oxygen-deficient hot air2The heat and the reaction substances required by part of the gasification reaction are supplemented, so that the heat release and CO generation of part of coal can be counteracted2Thereby achieving the effect of saving coal resources.
5. The method of claim 3, wherein the gas producer is used for in-situ conversion treatment of the byproduct tar, and the method comprises the following steps: the top spraying system of the gas producer sprays once for 1h, and the continuous spraying time of each time is 8-12 min.
6. The method of claim 1, wherein the gas producer is used for in-situ conversion treatment of tar byproduct, and the method comprises the following steps: in the step 1), the distillation product with the mass ratio of 65-75% forms light tar.
CN201910895589.9A 2019-09-21 2019-09-21 Method for in-situ conversion treatment of byproduct tar by using gas producer Withdrawn CN110616090A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910895589.9A CN110616090A (en) 2019-09-21 2019-09-21 Method for in-situ conversion treatment of byproduct tar by using gas producer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910895589.9A CN110616090A (en) 2019-09-21 2019-09-21 Method for in-situ conversion treatment of byproduct tar by using gas producer

Publications (1)

Publication Number Publication Date
CN110616090A true CN110616090A (en) 2019-12-27

Family

ID=68923723

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910895589.9A Withdrawn CN110616090A (en) 2019-09-21 2019-09-21 Method for in-situ conversion treatment of byproduct tar by using gas producer

Country Status (1)

Country Link
CN (1) CN110616090A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110056820A1 (en) * 2009-09-08 2011-03-10 Timonen Mika Method for pretreating and using the fine particles of a biomass in a gasification process and an apparatus utilizing said method
CN106590751A (en) * 2017-01-06 2017-04-26 中国科学院广州能源研究所 Biomass gasification method for achieving tar self-digestion
CN107760387A (en) * 2017-10-30 2018-03-06 中国科学院广州能源研究所 A kind of high nitrogen biomass castoff gasification, and combustion heating system and technique

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110056820A1 (en) * 2009-09-08 2011-03-10 Timonen Mika Method for pretreating and using the fine particles of a biomass in a gasification process and an apparatus utilizing said method
CN106590751A (en) * 2017-01-06 2017-04-26 中国科学院广州能源研究所 Biomass gasification method for achieving tar self-digestion
CN107760387A (en) * 2017-10-30 2018-03-06 中国科学院广州能源研究所 A kind of high nitrogen biomass castoff gasification, and combustion heating system and technique

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
H.H.杰里雅金等: "《煤气发生站水焦油设置》", 30 October 1964, 中国工业出版社 *

Similar Documents

Publication Publication Date Title
CN101324331B (en) Method for combustion by replacing oil with coal
US4142867A (en) Apparatus for the production of combustible gas
CN104593037B (en) A kind of method of combined type coal hydrogenation oil refining reactor and oil refining
CN104087340A (en) Waste pyrolysis system with adjustable oil, gas and carbon and method
CN104776426B (en) A kind of coal gas cooperates with generating, multi-joint-production apparatus and method with fine coal
CN102146301A (en) Method for two-stage coal gasification on composite external heat fixed bed and gas furnace
CN108101572B (en) Method for preparing light ceramsite by coupling oil-containing sludge at bottom of high-viscosity tank with solid waste in coal chemical industry
CN100362084C (en) Internal and external circulation coal gasification method and device
CN203474729U (en) System for producing clean energy source
CN105733730A (en) Biomass micron carbonized power high-temperature combustion method
CN211394370U (en) System for pyrolysis of junked tire of boiler flue gas of thermal power plant
CN104832226B (en) A kind of coal liquifaction and coal gas power generating simultaneously device and method
CN110205166A (en) A kind of solid waste refuse gasification fusing system and method
CN104119959A (en) Inverse-combustion dual-medium domestic waste gasifier
CN102504850B (en) Oil sand solid hot carrier low-temperature dry distillation process
CN114276837A (en) Biomass gasification process
CN110616090A (en) Method for in-situ conversion treatment of byproduct tar by using gas producer
CN204369820U (en) Biomass gasifying furnace waste heat comprehensive utilization system
CN105295985A (en) Method used for producing fuel oil and combustible gas from abandoned tyres
CN105157033A (en) System and method for pyrolyzing and treating garbage
US20090050532A1 (en) SOT (Shale Oil Technology)
CN102260538B (en) Method and device for air-floatation flow-state high-temperature heat-transfer gasification of biomass
CN205079237U (en) Garbage pyrolytic processing system
CN104479742A (en) Biomass fuel preparation system
CN204369819U (en) From preheating biomass gasifying furnace

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WW01 Invention patent application withdrawn after publication

Application publication date: 20191227

WW01 Invention patent application withdrawn after publication