CN211952741U - Energy-saving and environment-friendly grain drying pulverized coal furnace - Google Patents
Energy-saving and environment-friendly grain drying pulverized coal furnace Download PDFInfo
- Publication number
- CN211952741U CN211952741U CN202020045978.0U CN202020045978U CN211952741U CN 211952741 U CN211952741 U CN 211952741U CN 202020045978 U CN202020045978 U CN 202020045978U CN 211952741 U CN211952741 U CN 211952741U
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- China
- Prior art keywords
- hot
- combustion chamber
- blast furnace
- furnace body
- pulverized coal
- Prior art date
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- Expired - Fee Related
Links
- 239000003245 coal Substances 0.000 title claims abstract description 37
- 238000001035 drying Methods 0.000 title claims description 9
- 238000002485 combustion reaction Methods 0.000 claims abstract description 50
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 43
- 230000008021 deposition Effects 0.000 claims abstract description 6
- 238000007689 inspection Methods 0.000 claims abstract description 6
- 238000003801 milling Methods 0.000 claims abstract description 4
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 claims description 6
- 239000011449 brick Substances 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 9
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 5
- 239000003054 catalyst Substances 0.000 description 5
- 239000003546 flue gas Substances 0.000 description 5
- 239000000446 fuel Substances 0.000 description 5
- 239000000428 dust Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- -1 NOx Chemical compound 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
Images
Abstract
The utility model relates to an energy-concerving and environment-protective grain stoving buggy stove belongs to grain stoving and energy-concerving and environment-protective field. The milling machine is connected with whirlwind formula pulverized coal burner one end, still be connected with the combustion chamber, the combustion chamber other end is connected with the hot-blast furnace body, keep off fire wall one and keep off fire wall three respectively with hot-blast furnace body top fixed connection, there is electronic picture peg in the below of ash settling chamber and deposition fill bottom the combustion chamber, there is screw conveyer this electronic picture peg below, keep off fire wall two and hot-blast furnace body bottom fixed connection, hot-blast furnace inspection opening and ash removal mouth are located the side below of hot-blast furnace body, steam generator's water storage device fixed connection is in the hot-blast furnace body, and be located the combustion chamber and keep off between the fire wall one. The pulverized coal burner has the advantages that the structure is novel, pulverized coal is fully combusted, and the combustion utilization rate is improved; the heat lost by the heat conduction of the furnace wall can be effectively recovered through the steam generating device; the flame temperature in the furnace can be increased; reducing the emission of harmful gas and being beneficial to air environmental protection.
Description
Technical Field
The utility model belongs to grain is dried and energy-concerving and environment-protective field especially relates to an energy-concerving and environment-protective grain stoving buggy stove.
Background
The pulverized coal furnace is a boiler device taking pulverized coal as fuel. The present coal powder furnace combustion equipment mainly includes furnace chamber, burner and ignition device, and features that the fuel is fed into combustion chamber together with air and is combusted in suspension state, and the suspension combustion mode is also called combustion chamber combustion, and the pulverized coal has small grain size below 1000 microns, more than 20-50 microns and large specific surface area. The pulverized coal is conveyed by primary air and enters the hearth through the burner, secondary air is introduced into the hearth through the burner, and the pulverized coal stays in the hearth for only 1-2 seconds. In order to ensure that the pulverized coal is burnt out in the furnace in such a short time, the combustion must be intensified, and the combustion speed is influenced by the double effects of chemical power and diffusion. At present, the pulverized coal furnace mainly has the following problems:
1. the combustion efficiency is not high, and for a common conventional pulverized coal furnace, the combustion efficiency is 85%;
2. the general conventional pulverized coal furnace has lower combustion temperature, and the generated ash is soft and easy to bond, so that the ash is not beneficial to secondary utilization;
3. the existing hot blast stove of grain dryer has no environmental protection equipment, the generated flue gas is directly discharged, and the fuel coal contains certain sulfur and ash, and dust and SO generated in the high-temperature combustion process2And nitrogen oxides cause certain pollution to the surrounding atmospheric environment;
4. the heat loss is serious due to heat conduction, high smoke temperature and the like, and only part of heat released by fuel combustion is utilized;
5. at present, the grain drying pulverized coal furnace mostly improves the energy utilization rate from the furnace structure, and the combustion chemical factor is rarely considered.
Disclosure of Invention
The utility model provides an energy-saving and environment-friendly grain drying pulverized coal furnace, which solves the problems that the current grain drying pulverized coal furnace is insufficient in combustion and low in combustion efficiency; the heat loss is serious due to heat conduction, high smoke temperature and the like; and the existing hot blast stove of the grain dryer has no environmental protection equipment, the generated flue gas is directly discharged, and dust, SO2 and nitrogen oxide generated in the high-temperature combustion process can cause pollution to the surrounding atmospheric environment.
The utility model adopts the technical proposal that: the milling machine is connected with whirlwind formula pulverized coal burner one end, this whirlwind formula pulverized coal burner's the other end is connected with the combustion chamber, the combustion chamber other end is connected with the hot-blast furnace body, keep off fire wall one and keep off fire wall three respectively with hot-blast furnace body top fixed connection, there is electronic picture peg in the below of deposit ash room and deposition fill bottom the combustion chamber, there is screw conveyer this electronic picture peg below, keep off fire wall two and hot-blast furnace body bottom fixed connection, hot-blast furnace inspection hole and ash removal mouth are located the side below of hot-blast furnace body, the supply air inlet is one in the side of combustion chamber, the supply air inlet is two in furnace body upper portion side, steam generator's water storage device fixed connection is in the hot-blast furnace body, and be located the combustion chamber and keep off between the fire.
The hot blast stove body of the utility model adopts refractory bricks.
The outside fixed connection red brick layer in hot-blast furnace body side, top cover aluminum silicate plate, at this aluminum silicate plate's upper portion fixed connection steel framework.
Steam generator includes water storage device, the pipeline of sending water, the pressure balance valve, the ooff valve, the manometer, steam conveying pipe, steam jet, wherein send the pipeline of water to be connected with water storage device, the pressure balance valve is installed on the pipeline of water, steam conveying pipe is connected with water storage device, ooff valve and manometer are connected respectively on steam conveying pipe, steam jet connects the front end at steam conveying pipe, and is located the combustion chamber.
The utility model has the advantages of novel structure, full combustion of coal powder and improved combustion utilization rate; the heat lost by the heat conduction of the furnace wall can be effectively recovered through the steam generating device; the flame temperature in the furnace can be increased; reducing the emission of harmful gas and being beneficial to air environmental protection.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic structural view of the steam generator of the present invention.
Detailed Description
Referring to fig. 1, a pulverizer 1 is connected with one end of a cyclone pulverized coal burner 2, the other end of the cyclone pulverized coal burner 2 is connected with a combustion chamber 3, the other end of the combustion chamber 3 is connected with a hot blast stove body 10, a first fire wall 4 and a third fire wall 6 are respectively fixedly connected with the upper part of the hot blast stove body 10, an electric plugboard 7 is arranged below an ash settling chamber and an ash deposition bucket at the bottom of the combustion chamber, a spiral conveyor 8 is arranged below the electric plugboard 7, a second fire wall 5 is fixedly connected with the bottom of the hot blast stove body 10, a hot blast stove inspection hole and an ash removal hole 13 are arranged below the side surface of the hot blast stove body, a first air supply hole 14 is arranged on the side surface of the combustion chamber 3, a second air supply hole 15 is arranged on the side surface of the upper part of the stove body, and a water storage device 1601 of a steam generation device 16 is fixedly connected in the;
the hot blast stove body 10 adopts refractory bricks;
the outer part of the side surface of the hot blast stove body 10 is fixedly connected with a red brick layer 12, the top of the hot blast stove body is covered with an aluminum silicate plate 11, and the upper part of the aluminum silicate plate is fixedly connected with a steel structure frame 9;
referring to fig. 2, the steam generator 16 includes a water storage device 1601, a water feeding pipe 1602, a pressure balance valve 1603, a switch valve 1604, a pressure gauge 1605, a steam delivery pipe 1606, and a steam nozzle 1607, wherein the water feeding pipe 1602 is connected to the water storage device 1601, the pressure balance valve 1603 is installed on the water feeding pipe 1602, the steam delivery pipe 1606 is connected to the water storage device 1601, the switch valve 1604 and the pressure gauge 1605 are respectively connected to the steam delivery pipe 1606, and the steam nozzle 1607 is connected to the front end of the steam delivery pipe 1606 and located in the combustion chamber 3.
The working principle is as follows:
the external equipment includes milling machine 1, pulverized coal burner 2, and increase one section combustion chamber 3, set up the fire wall in the furnace body and be used for keeping off grey mixed flow, and be equipped with deposit ash chamber and deposition bucket in the combustion chamber lower part, still be equipped with the moisturizing mouth respectively on the lateral wall of furnace body and combustion chamber for supplementary oxygen, so that guarantee that the buggy obtains abundant burning, deposit ash chamber is equipped with the deposition bucket in the furnace body lower part, come the ash discharge with screw conveyer, set up inspection opening and ash removal mouth in the furnace body side, so that inspection, dust removal. The high-temperature flue gas is output from an output port of the furnace body; high-temperature flue gas coming out of the furnace needs to exchange heat through a heat exchanger, and then air is heated to 120-;
injecting water or water + catalyst into the water storage device 1601, burning the pulverized coal to conduct heat of the furnace wall, heating and boiling the water in the water storage device 1601 to generate water vapor, controlling 1603 through a water feeding pipeline 1602 and a pressure balance valve to enable the water vapor in the water storage device 1601 to have certain pressure, and then spraying the water vapor or the water vapor + catalyst into the combustion chamber 3 through a steam delivery pipe 1606, a switch valve 1604 and a pressure gauge 1605 and a steam nozzle 1607 to assist pulverized coal combustion;
the steam generating device has a recycling function on heat generated by the combustion of the pulverized coal furnace, and the spraying amount of the water steam can be controlled by a pressure gauge and a switch valve; but also can effectively prevent heat energy from passing through the furnace wall to be conducted outwards to lose heat, the steam generating device has the advantages of high heat energy recovery efficiency and operation cost saving, and the device is combined with the pulverized coal furnace without increasing the occupied area.
And (3) carrying out high-temperature chemical reaction on carbon and water vapor in the furnace to generate water gas:
C+H2O→CO+H2
CO and H produced2A series of chain-lock chemical reactions can also occur:
2CO+O2→2CO2
2H2+O2→2H2O
compared with the combustion of solid coal powder, the combustion of water gas has the advantage of fully burning more heat, thereby reducing dust and SO generated in the high-temperature combustion process2And the emission of nitrogen oxides, the problems of certain pollution to the surrounding atmospheric environment and the like are avoided, the purposes of energy conservation and environmental protection in the production process are achieved, the steam can generate 'explosion' in the furnace, and the steam explosion improves the heat energy conversion coefficient;
in addition, the water in the water storage device can be doped with organic hydrogen production catalysts such as hydrocarbon, small molecular alcohol and the like, and the organic hydrogen production catalysts are mixed with water vapor after being evaporated, so that the flame temperature is increased and the environmental pollution is reduced in the combustion process of the pulverized coal is assisted;
the resulting product may further react exothermically with water vapor:
CO+H2O→CO2+H2
generating and combusting with oxygen:
2H2+O2→2H2O
when the catalyst for generating hydrogen is added into the water-blended fuel, not only the utilization rate of energy can be improved, but also the emission of harmful gases in the flue gas, such as NOx, can be reduced.
Claims (4)
1. An energy-saving and environment-friendly grain drying pulverized coal furnace is characterized in that: the milling machine is connected with whirlwind formula pulverized coal burner one end, this whirlwind formula pulverized coal burner's the other end is connected with the combustion chamber, the combustion chamber other end is connected with the hot-blast furnace body, keep off fire wall one and keep off fire wall three respectively with hot-blast furnace body top fixed connection, there is electronic picture peg in the below of deposit ash room and deposition fill bottom the combustion chamber, there is screw conveyer this electronic picture peg below, keep off fire wall two and hot-blast furnace body bottom fixed connection, hot-blast furnace inspection hole and ash removal mouth are located the side below of hot-blast furnace body, the supply air inlet is one in the side of combustion chamber, the supply air inlet is two in furnace body upper portion side, steam generator's water storage device fixed connection is in the hot-blast furnace body, and be located the combustion chamber and keep off between the fire.
2. The energy-saving and environment-friendly grain drying coal powder furnace as claimed in claim 1, is characterized in that: the hot blast stove body is made of refractory bricks.
3. The energy-saving and environment-friendly grain drying coal powder furnace as claimed in claim 1, is characterized in that: the hot blast stove is characterized in that the outer part of the side surface of the hot blast stove body is fixedly connected with a red brick layer, the top of the hot blast stove body is covered with an aluminum silicate plate, and the upper part of the aluminum silicate plate is fixedly connected with a steel structure frame.
4. The energy-saving and environment-friendly grain drying coal powder furnace as claimed in claim 1, is characterized in that: steam generator includes water storage device, send the water pipeling, the pressure balance valve, the ooff valve, the manometer, steam conveying pipe, steam jet, wherein send the water pipeling to be connected with water storage device, the pressure balance valve is installed on the water pipeling, steam conveying pipe is connected with water storage device, ooff valve and manometer are connected respectively on steam conveying pipe, steam jet connects the front end at steam conveying pipe, and is located the combustion chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020045978.0U CN211952741U (en) | 2020-01-09 | 2020-01-09 | Energy-saving and environment-friendly grain drying pulverized coal furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020045978.0U CN211952741U (en) | 2020-01-09 | 2020-01-09 | Energy-saving and environment-friendly grain drying pulverized coal furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211952741U true CN211952741U (en) | 2020-11-17 |
Family
ID=73181065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020045978.0U Expired - Fee Related CN211952741U (en) | 2020-01-09 | 2020-01-09 | Energy-saving and environment-friendly grain drying pulverized coal furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211952741U (en) |
-
2020
- 2020-01-09 CN CN202020045978.0U patent/CN211952741U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201117 |