CN104629852A - Device and method for drying and upgrading brown coal or low metamorphic long-flame coal - Google Patents
Device and method for drying and upgrading brown coal or low metamorphic long-flame coal Download PDFInfo
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- CN104629852A CN104629852A CN201410738101.9A CN201410738101A CN104629852A CN 104629852 A CN104629852 A CN 104629852A CN 201410738101 A CN201410738101 A CN 201410738101A CN 104629852 A CN104629852 A CN 104629852A
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- 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
Abstract
The invention discloses a device for drying and upgrading brown coal or low metamorphic long-flame coal. According to the device, a pressure tank is provided with one or more gas inlet pipes which are connected with a heat exchanger, the pressure tank is also provided with one or more gas exhaust pipes, each gas inlet pipe is provided with a gas inlet valve, and each gas exhaust pipe is provided with a gas exhaust valve; and a sealed pressure-resistant valve is respectively arranged in a feed opening and a discharge opening of the pressure tank. A method comprises the following steps: sequentially closing and opening feeding and discharging sealed pressure-resistant valves, and then loading materials; closing the feeding sealed pressure-resistant valve after material loading ends; opening the gas inlet valve, closing the gas inlet valve when gas pressure in the pressure tank reaches a set pressure value, also opening the gas exhaust valve, then closing the gas exhaust valve after moisture in the tank is completely removed, opening the gas inlet valve again, and repeating the steps for a plurality of times until the total moisture of the coal is reduced to meet the requirements. The moisture of the coal which is dried by using the method and the device disclosed by the invention can be significantly reduced, the mechanical hardness and calorific value stability of finished coal can be increased, and weathering can be greatly reduced; and the device is low in energy consumption in a drying process, also is low in equipment construction cost, is environment-friendly, is easy to control, and is easy to achieve large batch production.
Description
Technical field
The present invention relates to the processing and utilization field of brown coal or low rotten long-flame coal, especially relate to the device and method of the drying processing of brown coal or low rotten long-flame coal.
Background technology
As everyone knows, it is very huge that storage composed on earth by brown coal or low rotten long-flame coal, but moisture is high, and unit calorific value is low, easy spontaneous combustion, easy efflorescence, physical strength and thermostability low, be unfavorable for directly transport and utilize.For many years, unit calorific value for the moisture reducing brown coal or low rotten long-flame coal, thus is improved in countries in the world, improves ature of coal and has carried out large quantifier elimination, but also do not have proven technique flow process, there is many drawbacks.Mainly contain: 1, consume energy high, by moisture a large amount of in a large amount of coal-fired devaporation raw coal; 2, environmental protection carbon emission is large, pollutes large; 3, finished product efflorescence is serious, and physical strength, thermostability are lower than raw coal, is unfavorable for transport; 4, equipment is complicated, cost is high, production cost is high, is difficult to large industrialized and uses.
Summary of the invention
For prior art Problems existing, the invention provides the devices and methods therefor of a kind of brown coal or low rotten long-flame coal drying and upgrading.Reduce significantly through the dried moisture content of coal of these apparatus and method, unit calorific value raises, and grain volume reduction, moisture resorption is few, and mechanical hardness and calorific value stability raise, and efflorescence, weathering reduces greatly.Drying process power consumption is low and equipment manufacturing cost is low, and production cost is low, and environmental protection is easy to control, and is easy to produce in enormous quantities.
For achieving the above object, technical solution of the present invention is:
A device for brown coal or low rotten long-flame coal drying and upgrading, this device comprises a gas pressurization device, and this gas pressurization device is sequentially connected with an interchanger and a pressure-pot; Described pressure-pot is provided with one or more inlet pipe and connects interchanger, is provided with air intake valve in described inlet pipe; Described pressure-pot is also provided with one or more vapor pipe, is provided with drain tap in described vapor pipe; The opening for feed of described pressure-pot and discharge port are respectively equipped with the resistance to pressure valve of feeding seal and discharging seals resistance to pressure valve.
The device of foregoing a kind of brown coal or low rotten long-flame coal drying and upgrading, described vapor pipe comprises top vent pipe and sidepiece vapor pipe, described top vent pipe is arranged on the top ends of pressure-pot, and described sidepiece vapor pipe is arranged on the top of the pressure-pot right side relative with the left side that inlet pipe accesses.
The device of foregoing a kind of brown coal or low rotten long-flame coal drying and upgrading, described inlet pipe extends into the middle part in pressure-pot, and the outlet side of this inlet pipe is made up of multiple take-off pipe connected in dispersion shape.
A method for brown coal or low rotten long-flame coal drying and upgrading, the operation steps of the method is as follows:
1., the discharging of closing presure tank seals resistance to pressure valve, opening the resistance to pressure valve of feeding seal, dropping into needing the feed coal of drying and upgrading;
2., after charging, feeding seal resistance to pressure valve is closed;
3., intake valve is opened, in the air charged pressure tank of Pressurized-heated; The pressure of air inlet is higher than 0.3MPa, and the temperature of air inlet is higher than room temperature;
4., when the air pressure in pressure-pot reach after higher than 0.3MPa, close intake valve, stop more than 1 minute time, with make heat exchange and moisture diffusion complete;
5., open drain tap, pressure-pot is included the evacuate air of large quantity of moisture;
6., emptying rear closedown drain tap, open intake valve, repeat 3.-5. step several times, the total moisture content to the coal in tank to the coal in tank is reduced to the processing requirement meeting readymade coal;
7., open bottom discharge and seal resistance to pressure valve, the coal drawn off is readymade coal through cooling;
8., repeat 1.-7., be continuous seepage.
The usefulness of technique scheme is:
The first, environmental protection.As adopted electric heater to carry out heat hot coal gas body as interchanger, then production process can reach without charcoal discharge, and environment protecting is splendid.
The second, energy-conservation.The present invention adopts pressurized, heated to cause brown coal or low rotten long-flame coal modification, and most moisture of coal is diffused in air that to consume vaporization heat few pressure-pot is atomization, and course of processing power consumption is low.
3rd, improve operation strategies.Brown coal or low rotten long-flame coal raw coal intensity difference, easy-weathering efflorescence.The readymade coal Pulverization ratio of other normal pressure or negative pressure drying is high, basic mechanical intensity and thermostability, and product can only be used as low-grade fuel.But the product coal physical strength that the present invention produces and thermostability all effectively improve, in addition to fuel, can be used as the feed coal making other field such as vapour, Coal Chemical Industry.
4th, present invention process is simple, at the bottom of production safety, equipment manufacturing cost, production cost is low, is easy to maximize and produces and promote.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms a part of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of the device of brown coal of the present invention or low rotten long-flame coal drying and upgrading.
Embodiment
In order to make technical problem to be solved by this invention, technical scheme and beneficial effect clearly, understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As shown in Figure 1, the device of a kind of brown coal disclosed by the invention or low rotten long-flame coal drying and upgrading, this device comprises a gas pressurization device 10, and this gas pressurization device 10 is sequentially connected with interchanger 20 and a pressure-pot 30.
Described gas pressurization device 10 refers to the equipment that can pressurize to air or other non-fuel gas, and can be air compressor machine, also can be gas pressurization pump etc.
Described interchanger 20 refers to the heat exchange equipment that can heat the gas transmitted from gas pressurization device 10, and can be electrically heated, also can be coal burning and gas burning interchanger, also can be other interchanger such as thermal medium boiler.
Described pressure-pot 30 must be the pressure-pot of salable and withstand voltage more than 0.3MPa.
Described pressure-pot 30 is provided with one or more inlet pipe and connects interchanger 20, is provided with air intake valve in described inlet pipe.The inlet pipe 31 of the present embodiment is set to one, which is provided with an air intake valve 50, described inlet pipe 31 extends into the middle part in pressure-pot 30, and the outlet side of this inlet pipe 31 is made up of multiple take-off pipe connected in dispersion shape, to make air inlet evenly.
Described pressure-pot 30 is also provided with one or more vapor pipe 32, is provided with drain tap 60 in described vapor pipe 32.The vapor pipe 32 of the present embodiment is set to two, comprises top vent pipe 321 and sidepiece vapor pipe 322.Described top vent pipe 321 is arranged on the top ends of pressure-pot 30, and described sidepiece vapor pipe 322 is arranged on the top of pressure-pot 30 right side relative with the left side that inlet pipe 31 accesses.
The opening for feed 33 of described pressure-pot 30 and discharge port 34 are respectively equipped with the resistance to pressure valve of feeding seal 70 and discharging seals resistance to pressure valve 80.
A method for brown coal or low rotten long-flame coal drying and upgrading, the operation steps of the method is as follows: 1., the discharging of closing presure tank 30 seals resistance to pressure valve 80, opening the resistance to pressure valve 70 of feeding seal, dropping into needing the feed coal of drying and upgrading;
2., after charging, feeding seal resistance to pressure valve 70 is closed.
3., open intake valve 50, in the air charged pressure tank 30 of gas pressurization device 10 and interchanger 20 Pressurized-heated, carry out heat exchange with feed coal and moisture diffusion shifts; (pressure is larger higher than 0.3MPa for the pressure of air inlet, the thermostability of readymade coal is higher, the high-temperature gas entered is more even, and the quality of product is average), and the temperature of air inlet is higher than normal temperature, preferably higher than 100 DEG C, (higher than 100 DEG C, heat exchange is fast, and moisture diffusion is fast to be less than or equal to 450 DEG C, total gas consumption reduces, and production efficiency is high; Higher than 450 DEG C, after easily causing heat exchange, the too high part fugitive constituent of coal temperature of brown coal is separated out, and loses heat pollutes simultaneously).
4., when the air pressure in pressure-pot 30 reach after setting pressure (higher than 0.3MPa), close intake valve 50, stop more than 1 minute time, best 2-5 minute, with make heat exchange and moisture diffusion complete;
5., open drain tap 60, pressure-pot 30 is included the evacuate air of large quantity of moisture;
6., emptying rear closedown drain tap 60, open intake valve 50, repeat 3.-5. step several times, total moisture content to the coal in tank is reduced to the processing requirement meeting readymade coal, such as, the total moisture content of readymade coal-electric coal should lower than 20%, and the total moisture content of readymade coal-chemical industry coal should lower than 12%.
7., open bottom discharge and seal resistance to pressure valve 80, the coal drawn off is readymade coal through cooling.
8., repeat 1.-7., be continuous seepage.
Above-mentioned explanation illustrate and describes the preferred embodiments of the present invention, as previously mentioned, be to be understood that the present invention is not limited to the form disclosed by this paper, should not regard the eliminating to other embodiments as, and can be used for other combinations various, amendment and environment, and can in invention contemplated scope described herein, changed by the technology of above-mentioned instruction or association area or knowledge.And the change that those skilled in the art carry out and change do not depart from the spirit and scope of the present invention, then all should in the protection domain of claims of the present invention.
Claims (8)
1. the device of brown coal or low rotten long-flame coal drying and upgrading, it is characterized in that: this device comprises a gas pressurization device (10), this gas pressurization device (10) is sequentially connected with an interchanger (20) and a pressure-pot (30); Described pressure-pot (30) is provided with one or more inlet pipe (31) and connects interchanger (20), is provided with air intake valve (50) in described inlet pipe (31); Described pressure-pot (30) is also provided with one or more vapor pipe (32), is provided with drain tap (60) in described vapor pipe (32); The opening for feed (33) of described pressure-pot (30) and discharge port (34) are respectively equipped with the resistance to pressure valve of feeding seal (70) and discharging seals resistance to pressure valve (80).
2. the device of a kind of brown coal as claimed in claim 1 or low rotten long-flame coal drying and upgrading, it is characterized in that: described vapor pipe (32) comprises top vent pipe (321) and sidepiece vapor pipe (322), described top vent pipe (321) is arranged on the top ends of pressure-pot (30), and described sidepiece vapor pipe (322) is arranged on the top of pressure-pot (30) right side relative with the left side that inlet pipe (31) accesses.
3. the device of a kind of brown coal as claimed in claim 1 or 2 or low rotten long-flame coal drying and upgrading, to it is characterized in that: described inlet pipe (31) extends into the middle part in pressure-pot (30), and the outlet side of this inlet pipe (31) is made up of multiple take-off pipe connected in dispersion shape.
4. a method for brown coal or low rotten long-flame coal drying and upgrading, is characterized in that: the operation steps of the method is as follows:
1., the discharging of closing presure tank (30) seals resistance to pressure valve (80), opening the resistance to pressure valve 70 of feeding seal, dropping into needing the feed coal of drying and upgrading;
2., charging after, close the resistance to pressure valve of feeding seal (70);
3., intake valve (50) is opened, in the air charged pressure tank (30) of Pressurized-heated; The pressure of air inlet is higher than 0.3MPa, and the temperature of air inlet is higher than room temperature;
4., after the air pressure in pressure-pot (30) is higher than 0.3MP, close intake valve (50), stop more than 1 minute time, with make heat exchange and moisture diffusion complete;
5., open drain tap (60), pressure-pot (30) is included the evacuate air of large quantity of moisture;
6., emptying rear closedown drain tap (60), open intake valve (50), repeat
step several times, the total moisture content to the coal in tank is reduced to the processing requirement meeting readymade coal;
7., open bottom discharge and seal resistance to pressure valve (80), the coal drawn off is readymade coal through cooling;
8., repeat 1.-7., be continuous seepage.
5. the device of a kind of brown coal as claimed in claim 1 or 2 or low rotten long-flame coal drying and upgrading, is characterized in that: the pressure-pot that described pressure-pot (30) is withstand voltage more than 0.3MPa.
6. the device of a kind of brown coal as claimed in claim 3 or low rotten long-flame coal drying and upgrading, is characterized in that: the pressure-pot that described pressure-pot (30) is withstand voltage more than 0.3MPa.
7. the method for a kind of brown coal as claimed in claim 4 or low rotten long-flame coal drying and upgrading, is characterized in that: the pressure-pot that described pressure-pot (30) is withstand voltage more than 0.3MPa.
8. the method for a kind of brown coal as described in claim 4 or 7 or low rotten long-flame coal drying and upgrading, is characterized in that: step 3. in inlet air temperature higher than 100 DEG C, be less than or equal to 450 DEG C.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410738101.9A CN104629852A (en) | 2014-12-05 | 2014-12-05 | Device and method for drying and upgrading brown coal or low metamorphic long-flame coal |
| PCT/CN2014/093799 WO2016086449A1 (en) | 2014-12-05 | 2014-12-15 | Device and method for drying and upgrading brown coal or low metamorphic long-flame coal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410738101.9A CN104629852A (en) | 2014-12-05 | 2014-12-05 | Device and method for drying and upgrading brown coal or low metamorphic long-flame coal |
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| Publication Number | Publication Date |
|---|---|
| CN104629852A true CN104629852A (en) | 2015-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410738101.9A Pending CN104629852A (en) | 2014-12-05 | 2014-12-05 | Device and method for drying and upgrading brown coal or low metamorphic long-flame coal |
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| Country | Link |
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| CN (1) | CN104629852A (en) |
| WO (1) | WO2016086449A1 (en) |
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| CN201593905U (en) * | 2009-11-19 | 2010-09-29 | 唐山市神州机械有限公司 | Mixed flow vibration drying device |
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| JP2011201944A (en) * | 2010-03-24 | 2011-10-13 | Mitsubishi Heavy Ind Ltd | Low grade coal drying apparatus and coal burning thermal power plant provided with the same |
| CN102564095A (en) * | 2012-02-14 | 2012-07-11 | 李树田 | Lignite drying device by aid of low-pressure superheated steam and method |
| CN103060048A (en) * | 2013-01-11 | 2013-04-24 | 蔡京鹏 | Method and equipment for drying lignite particles and pulverized coal granules |
| CN204298362U (en) * | 2014-12-05 | 2015-04-29 | 蔡京鹏 | The device of a kind of brown coal or low rotten jet coal drying and upgrading |
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| CA1054545A (en) * | 1975-06-03 | 1979-05-15 | James Wong (Jr.) | Upgrading of solid fuels |
| AT366405B (en) * | 1980-01-21 | 1981-04-13 | Voest Alpine Ag | METHOD FOR DRYING AND CONVERTING ORGANIC SOLIDS, ESPECIALLY BROWN COALS WITH STEAM |
| CN101020850B (en) * | 2007-03-16 | 2011-06-08 | 沈阳航空工业学院 | Integral process and apparatus for drying and upgrading lignite |
| CN203048902U (en) * | 2013-01-11 | 2013-07-10 | 蔡京鹏 | Pelletized lignite particle and pulverized coal drying device |
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2014
- 2014-12-05 CN CN201410738101.9A patent/CN104629852A/en active Pending
- 2014-12-15 WO PCT/CN2014/093799 patent/WO2016086449A1/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102144137A (en) * | 2008-07-09 | 2011-08-03 | 斯凯能源控股有限公司 | Upgrading carbonaceous materials |
| CN201593905U (en) * | 2009-11-19 | 2010-09-29 | 唐山市神州机械有限公司 | Mixed flow vibration drying device |
| JP2011201944A (en) * | 2010-03-24 | 2011-10-13 | Mitsubishi Heavy Ind Ltd | Low grade coal drying apparatus and coal burning thermal power plant provided with the same |
| CN102002412A (en) * | 2010-11-26 | 2011-04-06 | 北京国丰创展科技发展有限责任公司 | Method for enhancing quality of lignite by using saturated vapor |
| CN102564095A (en) * | 2012-02-14 | 2012-07-11 | 李树田 | Lignite drying device by aid of low-pressure superheated steam and method |
| CN103060048A (en) * | 2013-01-11 | 2013-04-24 | 蔡京鹏 | Method and equipment for drying lignite particles and pulverized coal granules |
| CN204298362U (en) * | 2014-12-05 | 2015-04-29 | 蔡京鹏 | The device of a kind of brown coal or low rotten jet coal drying and upgrading |
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| Publication number | Publication date |
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| WO2016086449A1 (en) | 2016-06-09 |
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Application publication date: 20150520 |
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