WO2014121558A1 - 褐煤振动热压脱水提质工艺及系统 - Google Patents
褐煤振动热压脱水提质工艺及系统 Download PDFInfo
- Publication number
- WO2014121558A1 WO2014121558A1 PCT/CN2013/074458 CN2013074458W WO2014121558A1 WO 2014121558 A1 WO2014121558 A1 WO 2014121558A1 CN 2013074458 W CN2013074458 W CN 2013074458W WO 2014121558 A1 WO2014121558 A1 WO 2014121558A1
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- WO
- WIPO (PCT)
- Prior art keywords
- coal
- upgrading
- lignite
- steam
- hot
- Prior art date
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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
- C10L9/00—Treating solid fuels to improve their combustion
- C10L9/08—Treating solid fuels to improve their combustion by heat treatments, e.g. calcining
-
- 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
- C10L5/447—Carbonized vegetable substances, e.g. charcoal, or produced by hydrothermal carbonization of biomass
-
- 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
Definitions
- the invention relates to a coal processing and cleaning process and system, in particular to a lignite vibration hot pressing dehydration upgrading process and system.
- Lignite is the coal with the lowest degree of coalification. Its main characteristics are water content of 30% ⁇ 50%, oxygen content of 15% ⁇ 30%, high volatile content of about 50%, low calorific value of about 14MJ/kg, low ash.
- evaporative dehydration generally uses flue gas or other waste heat gas as a drying medium, and directly contacts with lignite to heat it to evaporate and dry the coal, thereby causing the lignite to be easily pulverized, and the product lump coal is lower;
- Form removal need to absorb latent heat of vaporization, high energy consumption; because it is carried out under normal pressure and low temperature, it can not permanently change the structure of coal.
- the non-evaporative dehydration technology removes the moisture in the lignite in liquid form, and changes the physical and chemical structure of the lignite by high-temperature and high-pressure steam (or hot oil) to transform it into a dehydration and upgrading method similar to bituminous coal, which has broad development potential.
- the non-evaporative dehydration technology currently developed is relatively mature.
- the hot press dehydration process (MTE) proposed by Strauss University of Dortmund, Germany is a relatively mature non-evaporative dehydration technology, but still requires high temperature and pressure; The action time is longer, the production efficiency is low; the pressure is unevenly distributed in the axial direction of the coal material, and the middle part of the formed coal block is prone to lateral fracture and the like.
- MTE hot press dehydration process
- the object of the present invention is to provide a lignite vibration hot-pressure dewatering and upgrading process and system, that is, lignite is formed while the lignite is dehydrated and dehydrated, and the existing uneven distribution of hot pressing dewatering pressure and the lignite upgrading and dehydration are easy to recover.
- the problem of sucking is to provide a lignite vibration hot-pressure dewatering and upgrading process and system, that is, lignite is formed while the lignite is dehydrated and dehydrated, and the existing uneven distribution of hot pressing dewatering pressure and the lignite upgrading and dehydration are easy to recover.
- the lignite vibration hot press dewatering upgrade comprises a process and a device
- the upgrading process steps are as follows:
- A) The lignite in the raw coal bunker is crushed to a coal powder silo by a fan-milling pre-drying device, and is sent to a vibrating hot-pressure dewatering and upgrading device through a cloth device, and sealed after preheating;
- the device comprises: raw coal bunker, fan mill pre-drying device, coal powder bin, cloth device, vibrating hot-pressure dewatering and upgrading device, three-way valve, waste water purification system, steam switching valve and steam generating device;
- the mouth is connected with the inlet of the fan grinding powder pre-drying device, and the discharge port of the fan grinding powder pre-drying device is connected to the inlet of the vibration hot-pressure dewatering and upgrading device through the coal powder bin and the distributing device, and the steam generating device
- the steam inlet valve is connected to the steam inlet of the vibration hot-pressure dewatering and upgrading device, and the water outlet of the vibration hot-pressure dewatering and upgrading device passes through the three-way valve, one end is connected with the inlet of the vibration hot-pressure dewatering and upgrading device; one end is passed through the wastewater purification system. discharge.
- the coal material Adopting the vibration compaction system, the coal material is synergistically exerted by the static pressure and the exciting force, which can effectively improve the transmission of pressure in the coal material, so that the pressure of the coal material is more evenly distributed along the axial direction, avoiding the coal block after molding. Due to the small pressure received in the middle, the strength is low and lateral fracture occurs;
- the effect of the exciting force can accelerate the dehydration and molding of lignite, shorten the extrusion time and improve the production efficiency;
- the coal is directly heated by saturated steam, the phase change of the saturated steam, the release of latent heat and enhanced heat exchange between the coal and the coal, the heat exchange efficiency is high, the heating time is shortened, and the saturated steam is easily obtained in industrial production;
- the process conditions are mild and the dehydration efficiency is high: the temperature is 150 ⁇ 220°C, the static pressure is 5 ⁇ 12MPa, and the water content of lignite can be reduced to 10%.
- the problem of the present invention is solved by solving the problem of uneven distribution of existing hot-pressing dewatering pressure and easy re-absorption after dehydration of lignite.
- Figure 1 is a system diagram of a device device of the present invention.
- Example 1 The upgrading process steps are as follows:
- A) The lignite in the raw coal bunker 1 is crushed to 3 mm or less by the fan mill pre-drying device 2 and sent to the coal powder bin 3, and the lignite is sent to the vibrating hot-pressure dewatering and upgrading device 5 through the cloth device 4, and sealed after preheating;
- the device comprises: raw coal bunker 1, fan mill pre-drying device 2, coal powder bin 3, distribution device 4, vibrating hot-pressure dewatering and upgrading device 5, three-way valve 6, waste water purification system 7, steam switching valve 8 and steam
- the generating device 9 ; the discharge port of the raw coal bunker 1 is connected with the inlet of the fan mill pre-drying device 2, and the discharge port of the fan mill pre-drying device 2 passes through the pulverized coal bunker 3 and the distributing device 4 and the vibration heat
- the inlet port of the pressure dehydration improving device 5 is connected, and the steam generating device 9 is connected to the steam inlet of the vibrating hot-pressure dehydration improving device 5 through the steam switching valve 8.
- the water outlet of the vibrating hot-pressure dehydrating and upgrading device 5 passes through the three-way valve. 6.
- One end is connected to the inlet of the vibrating hot press dehydration upgrading device 5; one end is discharged through the wastewater purification system 7.
- the lignite in the raw coal bunker 1 is transferred to the fan mill pre-drying device 2 and crushed to less than 3 mm, and sent to the pulverized coal bunker 3, after which the pulverized coal is loaded into the vibrating hot-pressure dewatering and upgrading device 5 via the distributing device 4.
- Preheating the pulverized coal with the water removed by the previous process coal material sealing the material cylinder after preheating, opening the steam switching valve 8, heating the lignite with steam to a predetermined temperature, and then closing the steam switching valve 8, followed by vibration hot pressing dehydration
- the coal material is dehydrated and formed, it is used as the upgraded lignite.
- the removed moisture has a higher temperature and is used for preheating the next batch of coal. When the removed moisture contains too much impurities, it enters the wastewater purification system 7 and is discharged after purification. .
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- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
- Drying Of Solid Materials (AREA)
Abstract
Description
Claims (2)
- 一种褐煤振动热压脱水提质工艺,其特征是:提质工艺步骤如下:A)原煤仓中的褐煤经过风扇磨制粉预干燥装置破碎至3mm以下送至煤粉仓,经布料装置将褐煤送入振动热压脱水提质装置,预热后密闭;B)向振动热压脱水提质装置内通入蒸汽,加热褐煤至工艺温度,温度为150~220℃,压力为5~12MPa;蒸汽发生装置产生的蒸汽与煤料直接接触加热,的蒸汽来自于锅炉产生的蒸汽,对褐煤进行振动热压脱水、成型,成型静压力为5~12MPa;振动激振力大小、频率可调节;C)脱水、成型后脱模,待型煤冷却后,送入成品仓,冷却时产生的煤粉送回布料装置;D)煤料脱水成型后作为提质褐煤利用,脱除的水分经预热煤料利用预热后处理排放。
- 一种实施褐煤振动热压脱水提质工艺的系统,其特征是:装置包括:原煤仓、风扇磨制粉预干燥装置、煤粉仓、布料装置、振动热压脱水提质装置、三通阀、废水净化系统、蒸汽开关阀和蒸汽发生装置;原煤仓的出料口与风扇磨制粉预干燥装置的入料口连接,风扇磨制粉预干燥装置的出料口通过煤粉仓和布料装置与振动热压脱水提质装置的入料口连接,蒸汽发生装置通过蒸汽开关阀与振动热压脱水提质装置的蒸汽入口连接,振动热压脱水提质装置的出水口通过三通阀,一端与振动热压脱水提质装置的入口连接;一端通过废水净化系统排出。
Priority Applications (1)
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AU2013377629A AU2013377629B2 (en) | 2013-02-07 | 2013-04-19 | Process and system for upgrading lignite by vibration hot-pressing dehydration |
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CN201310048349.8 | 2013-02-07 | ||
CN201310048349.8A CN103087796B (zh) | 2013-02-07 | 2013-02-07 | 褐煤振动热压脱水提质工艺及系统 |
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WO2014121558A1 true WO2014121558A1 (zh) | 2014-08-14 |
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CN (1) | CN103087796B (zh) |
AU (1) | AU2013377629B2 (zh) |
WO (1) | WO2014121558A1 (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111534351A (zh) * | 2020-05-14 | 2020-08-14 | 太原理工大学 | 一种废油脂煮煤的装置及其使用方法 |
CN113234511A (zh) * | 2021-06-25 | 2021-08-10 | 中国矿业大学 | 一种处理重金属废水的褐煤改性方法及系统 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103087796B (zh) * | 2013-02-07 | 2014-04-16 | 中国矿业大学 | 褐煤振动热压脱水提质工艺及系统 |
CN104388143A (zh) * | 2014-11-14 | 2015-03-04 | 中国矿业大学(北京) | 两段连续式褐煤提质系统 |
CN111392811A (zh) * | 2020-03-04 | 2020-07-10 | 中国矿业大学 | 一种气流床煤气化细渣黑水多能量场协同高效脱水方法 |
CN113234514A (zh) * | 2021-05-29 | 2021-08-10 | 中国矿业大学 | 一种用于高含水物料的脱水提质系统 |
CN113877477B (zh) * | 2021-10-26 | 2023-11-10 | 中国矿业大学 | 一种煤泥造粒干燥装备及工作方法 |
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- 2013-02-07 CN CN201310048349.8A patent/CN103087796B/zh not_active Expired - Fee Related
- 2013-04-19 WO PCT/CN2013/074458 patent/WO2014121558A1/zh active Application Filing
- 2013-04-19 AU AU2013377629A patent/AU2013377629B2/en not_active Ceased
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111534351A (zh) * | 2020-05-14 | 2020-08-14 | 太原理工大学 | 一种废油脂煮煤的装置及其使用方法 |
CN113234511A (zh) * | 2021-06-25 | 2021-08-10 | 中国矿业大学 | 一种处理重金属废水的褐煤改性方法及系统 |
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CN103087796B (zh) | 2014-04-16 |
AU2013377629B2 (en) | 2017-02-02 |
CN103087796A (zh) | 2013-05-08 |
AU2013377629A1 (en) | 2015-08-27 |
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