CN109082322B - Biomass fuel crushing process - Google Patents

Biomass fuel crushing process Download PDF

Info

Publication number
CN109082322B
CN109082322B CN201810951555.2A CN201810951555A CN109082322B CN 109082322 B CN109082322 B CN 109082322B CN 201810951555 A CN201810951555 A CN 201810951555A CN 109082322 B CN109082322 B CN 109082322B
Authority
CN
China
Prior art keywords
crushing
biomass fuel
particles
straws
process according
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.)
Active
Application number
CN201810951555.2A
Other languages
Chinese (zh)
Other versions
CN109082322A (en
Inventor
沈显华
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.)
Anhui Juyan Biotechnology Co ltd
Original Assignee
Wuhu Juyan Biomass Energy Technology 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 Wuhu Juyan Biomass Energy Technology Co ltd filed Critical Wuhu Juyan Biomass Energy Technology Co ltd
Priority to CN201810951555.2A priority Critical patent/CN109082322B/en
Publication of CN109082322A publication Critical patent/CN109082322A/en
Application granted granted Critical
Publication of CN109082322B publication Critical patent/CN109082322B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L5/00—Solid fuels
    • C10L5/40—Solid fuels essentially based on materials of non-mineral origin
    • C10L5/44—Solid fuels essentially based on materials of non-mineral origin on vegetable substances
    • C10L5/445—Agricultural waste, e.g. corn crops, grass clippings, nut shells or oil pressing residues
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
    • C10L2290/02—Combustion or pyrolysis
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
    • C10L2290/28—Cutting, disintegrating, shredding or grinding
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
    • C10L2290/34—Applying ultrasonic energy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/10—Biofuels, e.g. bio-diesel
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel

Abstract

The invention discloses a crushing process of biomass fuel, belonging to the processing field of biomass fuel, the preparation method adopts ultrasonic soaking and hot rolling pretreatment, grinding pre-crushing, semi-anaerobic baking secondary treatment, superfine re-crushing, and processing straws from different physical and chemical aspects, which is beneficial to improving the compactness of straws, is convenient for the operation of crushed filler, and simultaneously improves the crushing efficiency, the last superfine crushing adopts centrifugal knife type crushing, generates air flow in the crushing process, is beneficial to the separation of particles with small fineness and particles with large fineness under the centrifugal action, and simultaneously secondarily crushes the particles with large fineness again, thereby having the double functions of separation and crushing, the crushed particles are more uniform, and the whole crushing process has the function of improving the combustion heat value and energy density of the prepared biomass fuel.

Description

Biomass fuel crushing process
Technical Field
The invention belongs to the technical field of biomass fuel processing, and particularly relates to a biomass fuel crushing process.
Background
The biomass resource is an extremely rich clean renewable resource, is favored by people due to important characteristics of renewability, permanence, diversity, environmental friendliness, affinity to human and the like, is required to be crushed and processed in the early stage of development and utilization, the crushing processing technology is a key and decisive factor for biomass energy conversion and utilization, the biomass raw material is crushed, the particles are changed from big to small, the surface area of the unit mass of the material is increased, the particle size is reduced, the total surface area and the number of the bonding action sizes among the particles in the compression process can be increased, the later processing and utilization effects are improved, most of the current crushers for developing and utilizing the biomass energy are straw returning crushing machines, the pulverizers can not meet the requirements of various biomass pulverization operations in the aspects of pulverization particle size and material adaptability, and become a technical bottleneck for developing and utilizing biomass energy sources on a large scale.
Disclosure of Invention
According to the defects of the prior art, the technical problem to be solved by the invention is to provide a biomass fuel crushing process, and the defects of poor crushing granularity and poor material adaptability in the prior art are overcome by a method combining pretreatment and staged pretreatment.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a biomass fuel crushing process comprises pretreatment, pre-crushing, secondary treatment and re-crushing, and comprises the following specific steps:
1) pretreatment: placing the collected crop straws in a soaking pool, soaking for 15-30min by ultrasonic, taking out, and performing hot rolling treatment for 2-3 times;
2) pre-crushing: grinding and crushing the straws subjected to hot rolling until the particle size is 2-3 cm;
3) secondary treatment: baking the pre-crushed particles in a semi-anaerobic manner until the water content is 10-15%;
4) and (3) crushing again: and performing ultrafine grinding on the particles subjected to secondary treatment to obtain the particle size of 200-300 meshes.
Preferably, the crop straws are at least one of corn, rape, wheat straws or rice.
Preferably, the ultrasonic soaking power is 500-800w, the frequency is 40-60Hz, the mechanical action of the ultrasonic is favorable for the absorption of the soaking liquid by the straws, and the cavitation action of the ultrasonic is used for physically destroying the lignin and cellulose of the straws, so that the subsequent crushing efficiency is improved.
Preferably, the temperature of the hot-rolling roller is 100-120 ℃, the pressure is 10-20Mpa, the speed is 3-5m/min, the hot rolling is secondary physical damage to the straws, and the hot-rolling roller has the function of softening lignin and cellulose, improves the manufacturing efficiency of the biomass fuel in the subsequent process, removes the porosity in the straws during rolling, improves the compactness of the straws, and is beneficial to the filler operation of pre-crushing.
Preferably, the pre-crushing adopts grinding type crushing, and the grinding pressure is 10-15 Mpa.
Preferably, the semi-anaerobic baking is performed as follows: the particles to be baked are placed in a baking box, the temperature is raised to 60-70 ℃ in a sealed mode, the temperature is kept for 3-5min, oxygen is continuously blown in, the temperature is raised to 150-plus 170 ℃, the temperature is kept for 15-20min, then nitrogen is blown in, the temperature is raised to 200-plus 230 ℃, the temperature is kept for 20-25min, the nitrogen is stopped and is continuously blown in until the temperature is less than or equal to 30 ℃, materials are taken out, the baking is favorable for carbonizing the straws, the heat value and the energy density of the straws are improved, the carbon-oxygen ratio and the carbon-hydrogen ratio are reduced, the combustion efficiency and the combustion quality of the prepared biomass fuel are improved, the baking treatment is also favorable for the fineness of secondary crushing, the addition of oxygen in the baking is favorable for accelerating the pyrolysis reaction of the prepared biomass fuel, the heat release temperature range of the reaction is reduced, and the peak value of the heat release is increased.
Preferably, the blowing amount of the oxygen is 0.5 to 1L/min, and the blowing amount of the nitrogen is 1 to 1.5L/min.
Preferably, the superfine grinding adopts a centrifugal knife type grinder, the centrifugal knife type grinder generates air flow in the grinding process, the separation of particles with small fineness and particles with large fineness is facilitated under the centrifugal effect, meanwhile, the secondary grinding is carried out on the particles with large fineness, the double functions of separation and grinding are achieved, and the ground particles are more uniform.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the straw is pretreated by ultrasonic soaking, the mechanical action of the ultrasonic is favorable for the straw to absorb the soaking liquid, and meanwhile, the cavitation action of the ultrasonic is used for physically destroying lignin and cellulose of the straw, so that the subsequent crushing efficiency is improved.
2. The invention adopts hot rolling for pretreatment, the hot rolling is secondary physical damage to the straws, and simultaneously has the function of softening lignin and cellulose, thereby improving the manufacturing efficiency of the biomass fuel in the subsequent process, removing the porosity in the straws simultaneously, improving the compactness of the straws and being beneficial to the operation of the filler for pre-crushing.
3. The invention adopts semi-anaerobic baking to perform the treatment of the straws, which is beneficial to the carbonization of the straws, improves the heat value and the energy density of the straws, simultaneously reduces the carbon-oxygen ratio and the carbon-hydrogen ratio, improves the combustion efficiency and the combustion quality of the prepared biomass fuel, is also beneficial to the fineness of the secondary crushing after the baking treatment, is beneficial to accelerating the pyrolysis reaction of the prepared biomass fuel by adding oxygen during the baking, simultaneously reduces the exothermic temperature range of the reaction, and increases the exothermic peak value.
4. The invention adopts the centrifugal knife type grinder to generate airflow in the grinding process, is beneficial to separating particles with small fineness from particles with large fineness under the centrifugal action, simultaneously carries out secondary grinding on the particles with large fineness, has double functions of separation and grinding, and ensures that the ground particles are more uniform.
Detailed Description
The following embodiments are provided to describe the embodiments of the present invention, and to further describe the detailed description of the embodiments of the present invention, such as the shapes, configurations, mutual positions and connection relationships of the components, the functions and operation principles of the components, the manufacturing processes and operation methods, etc., so as to help those skilled in the art to more fully, accurately and deeply understand the inventive concept and technical solutions of the present invention.
Example 1
A biomass fuel crushing process comprises pretreatment, pre-crushing, secondary treatment and re-crushing, and comprises the following specific steps:
1) pretreatment: selecting collected corn swelling soft straws, cutting the straws into 7-8cm straw sections, then placing the straw sections in a clean water soaking pool, soaking the straws in ultrasonic waves at the power of 700w and the frequency of 55Hz for 25min, wherein the mechanical action of the ultrasonic waves is favorable for the straws to absorb soaking liquid, simultaneously, the cavitation action of the ultrasonic waves is used for physically destroying lignin and cellulose of the straws, improving the subsequent crushing efficiency and reducing the fluffiness of the swelling soft straws, fishing out the soaked straws and placing the straws on a hot pressing bed, setting the temperature of a rolling roller to be 110 ℃, the pressure to be 15MPa and the speed to be 4m/min, carrying out hot rolling treatment on the soaked straw sections for 3 times, wherein the hot rolling is the secondary physical damage to the straws, and has the function of softening the lignin and the cellulose, improving the manufacturing efficiency of the subsequent process of the biomass fuel, and removing the internal porosity of the straws while rolling, the compactness of the straw is improved, and the operation of pre-crushed filling is facilitated;
2) pre-crushing: placing the straw sections subjected to hot rolling in a grinding pulverizer, grinding and pulverizing under the pressure of 12Mpa until the particle size of the particles is 3cm, sieving, and repeatedly grinding until all the particles meet the standard, wherein the grinding and pulverizing are favorable for damaging lignin and cellulose in the straws;
3) secondary treatment: placing the pre-crushed particles in a baking box, sealing the baking box, raising the temperature to 65 ℃, preserving the heat for 4min, blowing oxygen at the speed of 1L/min, raising the temperature to 165 ℃, preserving the heat for 20min in the presence of oxygen, blowing nitrogen at the speed of 1.3L/min, raising the temperature to 220 ℃, preserving the heat for 25min in the presence of nitrogen, stopping heating, continuously blowing nitrogen, reducing the temperature to be lower than 30 ℃, taking out the baked particles, detecting the water content to be 10-15%, baking, improving the heat value and energy density of the straws, reducing the carbon-oxygen ratio and the carbon-hydrogen ratio, improving the combustion efficiency and combustion quality of the prepared biomass fuel, baking the particles, improving the fineness of secondary crushing, and accelerating the pyrolysis reaction of the prepared biomass fuel by adding oxygen during baking, meanwhile, the exothermic temperature range of the reaction is reduced, and the exothermic peak value is increased;
4) and (3) crushing again: the particles after secondary treatment are placed in a centrifugal knife-type grinder, superfine grinding is carried out to the particles with the granularity of 300 meshes, the centrifugal knife-type grinder generates air flow in the grinding process, separation of the particles with small fineness and the particles with large fineness is facilitated under the centrifugal effect, meanwhile, secondary grinding is carried out on the particles with large fineness again, the centrifugal knife-type grinder has dual functions of separation and grinding, and the ground particles are more uniform.
Example 2
This example is the same as example 1 except that the ultrasonic soaking power is 500w, the frequency is 60Hz, the temperature of the hot rolling roller is 100 deg.C, the pressure is 10MPa, the speed is 3m/min, and the pre-grinding pressure is 10 MPa.
Example 3
This example is the same as example 1 except that the ultrasonic soaking power is 800w, the frequency is 40Hz, the temperature of the hot rolling roller is 120 deg.C, the pressure is 20MPa, the speed is 5m/min, and the pre-grinding pressure is 15 MPa.
Example 4
This example is the same as example 1 except that the ultrasonic soaking power is 500w, the frequency is 40Hz, the temperature of the rolling roller for hot rolling is 100 ℃, the pressure is 20MPa, and the speed is 5 m/min.
Example 5
This example is the same as example 1 except that the semi-oxygen-free baking operation in this example is as follows: placing the particles to be baked in a baking oven, sealing and heating to 60 deg.C, maintaining for 3min, heating to 150 deg.C while blowing oxygen at a speed of 0.5L/min, maintaining for 15min, then blowing nitrogen at a speed of 1L/min, heating to 200 deg.C, and maintaining for 20 min.
Example 6
This example is the same as example 1 except that the semi-oxygen-free baking operation in this example is as follows: placing the particles to be baked in a baking oven, sealing and heating to 70 deg.C, maintaining for 5min, heating to 170 deg.C while blowing oxygen at a speed of 1L/min, maintaining for 20min, then blowing nitrogen at a speed of 1.5L/min and heating to 230 deg.C, and maintaining for 25 min.
And (4) performance testing:
compressing the crushed particles into biomass fuel blocks of 8 × 8 × 15cm, meanwhile compressing the particles crushed by a normal method for comparison, calculating the density of the formed fuel according to the specification of NY/T1881.7-2010, measuring the calorific value of the formed fuel according to the specification of GB/T30727-: the biomass fuel prepared by the embodiment of the invention has the advantages that the overall performance reaches the standard, and the lower heating value is far larger than 13.7M.J.Kg-1And the data is more centralized compared with the data of the comparison group.
Figure BDA0001771625070000041
The invention has been described in an illustrative manner, and it is to be understood that the invention is not limited to the precise form disclosed, and that various insubstantial modifications of the inventive concepts and solutions, or their direct application to other applications without such modifications, are intended to be covered by the scope of the invention. The protection scope of the present invention shall be subject to the protection scope defined by the claims.

Claims (8)

1. The biomass fuel crushing process is characterized by comprising the following steps of pretreatment, pre-crushing, secondary treatment and re-crushing:
1) pretreatment: placing the collected crop straws in a soaking pool, adding clear water soaking solution into the soaking pool, soaking for 15-30min by ultrasonic wave, taking out, and performing hot rolling treatment for 2-3 times;
2) pre-crushing: grinding and crushing the straws subjected to hot rolling until the particle size is 2-3 cm;
3) secondary treatment: baking the pre-crushed particles in a semi-anaerobic manner until the water content is 10-15%;
4) and (3) crushing again: and performing ultrafine grinding on the particles subjected to secondary treatment to obtain the particle size of 200-300 meshes.
2. The biomass fuel pulverization process of claim 1, wherein the crop straw is at least one of corn, rape, wheat straw or rice.
3. The biomass fuel pulverizing process according to claim 1, wherein the power of the ultrasonic soaking is 500-800w, and the frequency is 40-60 Hz.
4. The biomass fuel pulverization process according to claim 1, wherein the temperature of the hot-rolled milling roller is 100-120 ℃, the pressure is 10-20Mpa, and the speed is 3-5 m/min.
5. The biomass fuel pulverization process according to claim 1, wherein the pre-pulverization is carried out by grinding pulverization under a pressure of 10-15 Mpa.
6. The biomass fuel pulverization process according to claim 1, characterized in that the operation of the semi-anaerobic baking is as follows: placing the particles to be baked in a baking box, sealing and heating to 60-70 ℃, preserving heat for 3-5min, continuously blowing oxygen, heating to 150-170 ℃, preserving heat for 15-20min, then blowing nitrogen, heating to 200-230 ℃, preserving heat for 20-25min, stopping adding, continuously blowing nitrogen until the temperature is less than or equal to 30 ℃, and taking materials.
7. The biomass fuel pulverization process according to claim 6, wherein the oxygen gas is blown in at 0.5 to 1L/min and the nitrogen gas is blown in at 1 to 1.5L/min.
8. The biomass fuel pulverizing process according to claim 1, wherein the ultrafine pulverization employs a centrifugal blade type pulverizer.
CN201810951555.2A 2018-08-21 2018-08-21 Biomass fuel crushing process Active CN109082322B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810951555.2A CN109082322B (en) 2018-08-21 2018-08-21 Biomass fuel crushing process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810951555.2A CN109082322B (en) 2018-08-21 2018-08-21 Biomass fuel crushing process

Publications (2)

Publication Number Publication Date
CN109082322A CN109082322A (en) 2018-12-25
CN109082322B true CN109082322B (en) 2022-05-24

Family

ID=64794004

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810951555.2A Active CN109082322B (en) 2018-08-21 2018-08-21 Biomass fuel crushing process

Country Status (1)

Country Link
CN (1) CN109082322B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110331019A (en) * 2019-08-13 2019-10-15 张家港百赫科技有限公司 A kind of preparation method of dangerous waste granular fuel

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
生物质成型燃料产业在我国的发展;陈永生等;《太阳能》(第4期);全文 *

Also Published As

Publication number Publication date
CN109082322A (en) 2018-12-25

Similar Documents

Publication Publication Date Title
CN102021059B (en) Forming method for modifying biomass fuel by rapid thermal treatment process
CN104591670B (en) A kind of production method of heat preservation plate material
CN101161134B (en) Reconstructed tobacco leaf slurry, tobacco slice and method for preparing the same
CN109082322B (en) Biomass fuel crushing process
CN103194245A (en) Preparation method of biomass carbon coal
CN104232235A (en) Production process of bio-mass fuel
CN101497836A (en) Organic waste solid moulding fuel and production method thereof
CN103602359A (en) Mixed biomass briquette fuel and forming method thereof
CN109022089B (en) Method for preparing fuel by expanding soft straw
CN106190398A (en) A kind of production technology of biomass fuel
CN102304223B (en) Plant oil polyether glycol and preparation method thereof
CN207054161U (en) A kind of stalk crushes briquetting all-in-one
CN108839160B (en) Preparation method of glue-free molding compact material of bamboo powder through hydrothermal treatment
KR20110015896A (en) Manufacturing method of briquette consisting of vegetable matter
Lei et al. A biomass briquetting fuel machine and its large-scale operation system
CN106085544A (en) A kind of composite biomass fuel and processing technique thereof
CN106244282A (en) A kind of high fuel value sawdust based biomass granule and preparation method thereof
CN105861094A (en) Environment-friendly biomass fuel and preparation method thereof
CN103088685A (en) Enzymolysis pretreatment method for hemp type crops serving as biological energy raw materials
CN110240965A (en) Biomass fuel processing technology
CN108297313A (en) A kind of rotary screen formula rubber pulverizing device
CN106675691A (en) Waterproof biomass forming fuel and preparation method thereof
CN105861567A (en) Method for producing high-heating-value biomass fuel from agricultural and forestry wastes
CN105505508B (en) A kind of preparation method of novel biomass industrial fuel
CN100422266C (en) Plant fiber foam material production method

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
GR01 Patent grant
GR01 Patent grant
CP03 Change of name, title or address
CP03 Change of name, title or address

Address after: 241000 Zhou Xia Yang Ci Tan, Zhou Wei Village, Liulang Town, Wanzhou District, Wuhu City, Anhui Province

Patentee after: Anhui Juyan Biotechnology Co.,Ltd.

Address before: 241100 Zhou Xia Yang CI Tan, Zhouwei village, LIULANG Town, Wuhu County, Wuhu City, Anhui Province

Patentee before: WUHU JUYAN BIOMASS ENERGY TECHNOLOGY CO.,LTD.