CN102102939A - Coal microwave drying method - Google Patents
Coal microwave drying method Download PDFInfo
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- CN102102939A CN102102939A CN2009102592559A CN200910259255A CN102102939A CN 102102939 A CN102102939 A CN 102102939A CN 2009102592559 A CN2009102592559 A CN 2009102592559A CN 200910259255 A CN200910259255 A CN 200910259255A CN 102102939 A CN102102939 A CN 102102939A
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Abstract
The invention discloses a coal microwave drying method, which is characterized in that: the preheating and drying of the coal are accomplished separately, and the waste heat generated in a microwave drying process is used for preheating the coal required to be dried. When the coal microwave drying method provided by the invention is adopted to dry coal, the energy-saving and emission-reduction effects are better than those achieved by the conventional method, and the cost of microwave drying is further reduced. The coal microwave drying method is novel and capable of being widely used for drying the coking coal and the high hydrodynamic coal, particularly suitable for drying brown coal and coal slime.
Description
Affiliated technical field
The present invention relates to a kind of drying means of coal, especially relate to a kind of method for microwave drying of coal.
Background technology
At present, the method for microwave drying of domestic and international disclosed coal, just like Chinese patent application number is that 200680044893.3 " microwave dryings of coal " etc. are contained, all is at normal temperatures and pressures the coal of required drying directly to be sent into microwave dryer once to finish dry overall process.There are the following problems for these ways: 1. need to finish the preheating to coal in microwave dryer, cause energy consumption to strengthen, power consumption is high; 2. need certain hour in the indoor preheating to coal of microwave drying, to same hothouse, treating capacity reduces; 3. because preheating needs, to handling same coal, the investment of microwave dryer strengthens; 4. the heat steam (hereinafter to be referred as waste hot gas) that produces in the inherent drying of microwave dryer, condensation process needs too much energy consumption; 5. the indoor waste hot gas of microwave drying effluxes, and causes waste; 6. the indoor waste hot gas of microwave drying directly effluxes the loss that can cause some microwaves.These problems will make that microwave drying energy consumption height, cost increase, system complex.In view of this, further reduce the cost of microwave drying, need rationally to handle preheating and dry relation, and rationally utilize the indoor waste hot gas of microwave drying.Therefore existing method for microwave drying is improved, utilize the waste hot gas that produces in the microwave drying to carry out The pre-heat treatment, can reach its intended purposes, and can obtain the existing inaccessible effect of method carrying out dry preceding coal.
Summary of the invention
The purpose of this invention is to provide and a kind ofly obtain the effect that cuts down the consumption of energy, reduces cost, and realize reducing the method for microwave drying of investment, highly reliable and easy realization by utilizing the waste hot gas that produces in the microwave drying that the coal before dry is carried out The pre-heat treatment.
Technical scheme of the present invention is summarized as follows:
The method for microwave drying of coal of the present invention comprises the method for microwave drying of existing coal, wherein the preheating of coal and dry work is separately carried out, and the coal of the waste hot gas that produces in microwave drying process with coal before to microwave drying carries out The pre-heat treatment.
The method for microwave drying of coal of the present invention also contains the dry residue microwave that does not use up in the wherein said waste hot gas.
The method for microwave drying of coal of the present invention, wherein said preheating thermal source can be part waste hot gas or low power microwave or other thermal source.
The method for microwave drying of coal of the present invention, the temperature of wherein said drying are controlled at 100 and spend in the temperature range of 300 degree.
The method for microwave drying of coal of the present invention, the temperature of wherein said waste hot gas and flow can be regulated and control at work on demand.
The method for microwave drying of coal of the present invention, wherein said waste hot gas preheating is direct preheating.
The method for microwave drying of coal of the present invention, wherein said waste hot gas preheating is an indirect preheating.
The method for microwave drying of coal of the present invention, wherein said drying and preheating are finished in same device.
The method for microwave drying of coal of the present invention, wherein said drying is finished in different devices with preheating.
The method for microwave drying of coal of the present invention, wherein said preheating are complete or incomplete preheating.
Compared with the prior art the present invention has fully shown following advantage:
(1) enters the preheating of the indoor coal of microwave drying, reduce in the indoor required energy consumption of dry target that reaches of microwave drying;
(2) enter the preheating of the indoor coal of microwave drying, reach the required time of dry target and reduce in that microwave drying is indoor;
(3) indoor in microwave drying, owing to do not need preheating, to handling same coal, the investment of microwave dryer reduces;
(4) waste hot gas that produces in the inherent drying of microwave dryer does not need to carry out specially condensation process, can reduce energy consumption, reduces cost;
(5) waste hot gas that produces in the microwave drying utilizes again, energy-saving and emission-reduction;
(6) the indoor waste hot gas of microwave drying does not directly efflux, and can reduce more corresponding microwave loss;
(7) be a kind of comparative maturity and easy the realization and highly reliable technology;
(8) because special preheating link has been arranged, moisture coal of height such as coal slime etc. there is stronger adaptability.
In sum, advantage of the present invention is: can effectively cut down the consumption of energy, reduce cost, and can reduce investment, highly reliable and easy realization.
When adopting the method for microwave drying of coal of the present invention to carry out coal dry, can obtain existing inaccessiable energy-conservation, the emission reduction effect of method, it is a kind of method for microwave drying of brand-new coal, can be used for the coking coal drying, the drying that also can be used for high hydrodynamic force coal is particularly suitable for the drying to brown coal and coal slime.
The specific embodiment
The method for microwave drying of coal of the present invention is described further below in conjunction with some embodiment:
The method for microwave drying of coal of the present invention, the method for microwave drying that comprises existing coal, wherein the preheating of coal and dry work are separately carried out, the coal of the waste hot gas that produces in microwave drying process with coal before to microwave drying carries out The pre-heat treatment, comprises following job step:
A. be ready to preheating and drying device;
B. in preheating device, add waste hot gas;
C. in preheating device, add and need dry coal;
D. the coal through The pre-heat treatment is sent into microwave drier;
E. carrying out drying in microwave drier handles;
F. the dry waste hot gas that produces in the microwave drier is sent in the preheating device;
G. from microwave drier, discharge dry good coal;
H. so continue to realize the microwave drying of coal.
Based on same principle and method, residue microwave and waste hot gas that the present invention also can not use up some dryings are together sent in the preheating device, are used for the preheating to coal, can realize goal of the invention equally, can reach the purpose that reduces cost simultaneously.
Based on same principle and method, the preheating that the present invention also can only be used for coal to described waste hot gas as a part or the sub-fraction of the required total amount of heat of preheating, extremely please can also finish preheating with substituting waste hot gas with lower-powered microwave or other thermal source under the condition, can realize the goal of the invention that reduces cost equally than microwave drying.
Based on same principle and method, the present invention also can be controlled at 100 to the temperature of described drying and spend in the temperature range of 300 degree, can realize goal of the invention equally.
Based on same principle and method, the present invention also can when obtaining better effect, realize goal of the invention equally at work the temperature of described waste hot gas and the need regulation and control of flow by different objects.
Based on same principle and method, the present invention also can be designed to the working method that waste hot gas directly contacts the direct preheating of coal to described preheating device, realizes goal of the invention equally.
Based on same principle and method, the present invention also can be designed to waste hot gas to described preheating device and directly contact the working method of the indirect preheating of coal by various heat transfer unit (HTU)s, realizes goal of the invention equally.
Based on same principle and method, the present invention also can finish described drying and preheating work design in same device, realize goal of the invention equally.
Based on same principle and method, the present invention also can finish described drying and preheating work design in different device, realize goal of the invention equally.
Based on same principle and method, the present invention also can be set at described preheating work by the complete preheating of preheating standard code or not reach the incomplete preheating of preheating standard code, realize goal of the invention equally, can reach the purpose that part reduces cost simultaneously.
The invention discloses a kind of method for microwave drying of coal; though more than enumerated less embodiment, for those of ordinary skill in the art, to some improvement that the present invention did, replacement etc.; perhaps above-mentioned embodiment is done any combination and is changed, and all drops within protection scope of the present invention.
Claims (10)
1. the method for microwave drying of a coal comprises the method for microwave drying of existing coal, it is characterized in that: the preheating of coal and dry work are separately carried out, and the coal of the waste hot gas that produces in microwave drying process with coal before to microwave drying carries out The pre-heat treatment.
2. the method for microwave drying of a kind of coal as claimed in claim 1 is characterized in that: also contain the dry residue microwave that does not use up in the described waste hot gas.
3. the method for microwave drying of a kind of coal as claimed in claim 1, it is characterized in that: described preheating thermal source can be part waste hot gas or low power microwave or other thermal source.
4. the method for microwave drying of a kind of coal as claimed in claim 1 is characterized in that: the temperature of described drying is controlled at 100 and spends in the temperature ranges of 300 degree.
5. the method for microwave drying of a kind of coal as claimed in claim 1, it is characterized in that: the temperature of described waste hot gas and flow can be regulated and control at work on demand.
6. the method for microwave drying of a kind of coal as claimed in claim 1, it is characterized in that: described waste hot gas preheating is direct preheating.
7. the method for microwave drying of a kind of coal as claimed in claim 1, it is characterized in that: described waste hot gas preheating is an indirect preheating.
8. the method for microwave drying of a kind of coal as claimed in claim 1, it is characterized in that: described drying and preheating are finished in same device.
9. the method for microwave drying of a kind of coal as claimed in claim 1, it is characterized in that: described drying is finished in different devices with preheating.
10. the method for microwave drying of a kind of coal as claimed in claim 1, it is characterized in that: described preheating is complete or incomplete preheating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102592559A CN102102939A (en) | 2009-12-17 | 2009-12-17 | Coal microwave drying method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102592559A CN102102939A (en) | 2009-12-17 | 2009-12-17 | Coal microwave drying method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102102939A true CN102102939A (en) | 2011-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102592559A Pending CN102102939A (en) | 2009-12-17 | 2009-12-17 | Coal microwave drying method |
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| CN (1) | CN102102939A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103115478A (en) * | 2013-02-17 | 2013-05-22 | 中国神华能源股份有限公司 | Drying equipment |
| CN105157399A (en) * | 2015-08-18 | 2015-12-16 | 山东大学 | Segmented water removing and drying system for high-humidity coal and application method for segmented water removing and drying system |
| CN108955095A (en) * | 2018-08-09 | 2018-12-07 | 太原理工大学 | A kind of lignite microwave drying process |
-
2009
- 2009-12-17 CN CN2009102592559A patent/CN102102939A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103115478A (en) * | 2013-02-17 | 2013-05-22 | 中国神华能源股份有限公司 | Drying equipment |
| CN103115478B (en) * | 2013-02-17 | 2015-04-29 | 中国神华能源股份有限公司 | Drying equipment |
| CN105157399A (en) * | 2015-08-18 | 2015-12-16 | 山东大学 | Segmented water removing and drying system for high-humidity coal and application method for segmented water removing and drying system |
| CN108955095A (en) * | 2018-08-09 | 2018-12-07 | 太原理工大学 | A kind of lignite microwave drying process |
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| C53 | Correction of patent for invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 100083, room 3, building 16, 402 Qinghua East Road, Beijing, Haidian District Applicant after: Jinyitong Science and Technology (Beijing) Co., Ltd. Address before: 100083, room 3, building 16, 204 Qinghua East Road, Beijing, Haidian District Applicant before: Jinyitong Science and Technology (Beijing) Co., Ltd. |
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| C53 | Correction of patent for invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 100083, room 3, building 16, 402 Qinghua East Road, Beijing, Haidian District Applicant after: Jinyitong Technology (Beijing) Co.,Ltd. Address before: 100083, room 3, building 16, 402 Qinghua East Road, Beijing, Haidian District Applicant before: Jinyitong Science and Technology (Beijing) Co., Ltd. |
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20110622 |