CN111719028A - Energy-saving safe pulverized coal spraying system - Google Patents
Energy-saving safe pulverized coal spraying system Download PDFInfo
- Publication number
- CN111719028A CN111719028A CN202010460802.6A CN202010460802A CN111719028A CN 111719028 A CN111719028 A CN 111719028A CN 202010460802 A CN202010460802 A CN 202010460802A CN 111719028 A CN111719028 A CN 111719028A
- Authority
- CN
- China
- Prior art keywords
- port
- cylinder body
- pulverized coal
- cone
- nitrogen
- 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.)
- Pending
Links
- 239000003245 coal Substances 0.000 title claims abstract description 27
- 238000005507 spraying Methods 0.000 title abstract description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 35
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 17
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000010438 heat treatment Methods 0.000 claims abstract description 14
- 239000001301 oxygen Substances 0.000 claims abstract description 14
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 14
- 229910052581 Si3N4 Inorganic materials 0.000 claims abstract description 8
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000005243 fluidization Methods 0.000 claims abstract description 5
- 238000007689 inspection Methods 0.000 claims abstract description 5
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 6
- 238000004880 explosion Methods 0.000 abstract description 3
- 229910052742 iron Inorganic materials 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 abstract description 3
- 238000004080 punching Methods 0.000 abstract description 2
- 238000007664 blowing Methods 0.000 description 7
- 239000000843 powder Substances 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/001—Injecting additional fuel or reducing agents
- C21B5/003—Injection of pulverulent coal
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Disintegrating Or Milling (AREA)
Abstract
The invention discloses an energy-saving safe pulverized coal spraying system, which comprises a cylinder body and a cone arranged at the bottom of the cylinder body, wherein the top of the cylinder body is provided with a pressure relief port and a nitrogen pressurization port, the bottom of the cone is provided with a fluidization port and a drainage port, the side surface of the cylinder body is provided with a lifting lug, a support, a power supply connector and an inspection hole, the power supply connector is connected with a silicon nitride heating rod arranged in the cylinder body, and the side surface of the cone at the bottom is provided with a bottom punching port, an oxygen concentration detector, an intelligent thickness gauge and a discharge port; an oxygen concentration detector is arranged to prevent the oxygen amount from reaching the explosion limit, and when the oxygen concentration exceeds the standard, a system automatically switches nitrogen replacement to prevent safety accidents; the silicon nitride heating rods are uniformly installed according to the calculation of the amount of the pulverized coal, the mixture of the pulverized coal and the nitrogen is directly heated, the external heating of the nitrogen is omitted, the iron making time is shortened, the two tanks can be alternately heated when connected in parallel, and the heating time waiting in the middle is shortened.
Description
Technical Field
The invention relates to a pulverized coal spraying system, in particular to an energy-saving safe pulverized coal spraying system.
Background
The existing pulverized coal spraying device cannot bear the operation pressure of equipment due to the fact that the equipment is unevenly scoured by pulverized coal for a long time, is not easy to find in the annual inspection period range, causes potential safety hazards, and cannot realize online monitoring.
Disclosure of Invention
The invention aims to provide an energy-saving safe pulverized coal spraying system.
The technical scheme adopted by the invention is as follows:
energy-conserving safe pulverized coal system that spouts, its characterized in that: the device comprises a cylinder body and a cone arranged at the bottom of the cylinder body, wherein a pressure relief port and a nitrogen pressurization port are arranged at the top of the cylinder body, a fluidization port and a drainage port are arranged at the bottom of the cone, a lifting lug, a support, a power supply connector and an inspection hole are arranged on the side surface of the cylinder body, the power supply connector is connected with a silicon nitride heating rod arranged in the cylinder body, and a bottom stamping port, an oxygen concentration detector, an intelligent thickness gauge and a discharge port are arranged on the side surface of the.
The discharge hole is communicated with the drain hole.
The barrel is equipped with two, and the top is through connecting pipe connection buggy entry.
The invention has the advantages that: installing an intelligent thickness gauge in an easily worn area (cone) of the equipment for real-time online monitoring, and transmitting signals to a central control room; an oxygen concentration detector is arranged to prevent the oxygen amount from reaching the explosion limit, and when the oxygen concentration exceeds the standard, a system automatically switches nitrogen replacement to prevent safety accidents; the silicon nitride heating rods are uniformly installed according to the calculation of the amount of the pulverized coal, the mixture of the pulverized coal and the nitrogen is directly heated, the external heating of the nitrogen is omitted, the iron making time is shortened, the two tanks can be alternately heated when connected in parallel, and the heating time waiting in the middle is shortened.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic structural diagram of the present invention.
Wherein: 1. a barrel; 2. a pulverized coal inlet; 3. a discharge port; 4. a pressure relief port; 5. a nitrogen pressurization port; 6. lifting lugs; 7. a support; 8. a power supply connector; 9. a silicon nitride heating rod; 10. inspecting the hole; 11. a bottom punch; 12. an oxygen concentration detector; 13. an intelligent thickness gauge; 14. a fluidization port; 15. a discharge port; 16. a cone.
Detailed Description
As shown in fig. 1, energy-conserving safe pulverized coal system that spouts, including barrel 1, locate the cone 16 of barrel 1 bottom, barrel 1 top sets up pressure relief vent 4, nitrogen gas pressure port 5, cone 16 bottom sets up fluidization mouth 14, row's of clearing mouth 15, barrel 1 side sets up lug 6, support 7, power connection 8, inspection hole 10, power connection 8 is connected and is located the inside silicon nitride heating rod 9 of barrel 1, bottom cone 16 side sets up bottom punching press mouth 11, oxygen concentration detector 12, intelligent calibrator 13, discharge gate 3.
The discharge port 3 is communicated with a clean discharge port 15.
The number of the cylinder bodies 1 is two, and the tops of the cylinder bodies are connected with the coal powder inlet 2 through a connecting pipe.
The main working flow of the device is as follows: charging: coal powder enters the blowing tank through a feeding hole at the upper part of the blowing tank, and when the amount of the charged coal powder reaches a set value, the feeding valve is closed; pressurizing: after the charging is finished, pressurizing the blowing tank by using high-pressure nitrogen, closing the high-pressure nitrogen after the pressure reaches a set value, keeping the pressure in the blowing tank constant, and waiting for blowing; blowing: opening a discharge valve, allowing fluidized coal powder to flow out of the injection tank through a coal powder discharge port under the action of the pressure of the injection tank and fluidized air in the injection tank, and continuously supplementing nitrogen into the injection tank to ensure the pressure in the injection tank to be stable; pressure relief: and when the pulverized coal in the injection tank is reduced to a set value, closing the pulverized coal discharge valve and stopping injection. And simultaneously, opening a pressure relief valve to discharge high-pressure nitrogen in the blowing tank so as to carry out the next cycle of charging operation.
The invention installs intelligent thickness gauge in the easy wear area (cone) of the apparatus to monitor online in real time, and transmit the signal to the central control room; an oxygen concentration detector is arranged to prevent the oxygen amount from reaching the explosion limit, and when the oxygen concentration exceeds the standard, a system automatically switches nitrogen replacement to prevent safety accidents; the silicon nitride heating rods are uniformly installed according to the calculation of the amount of the pulverized coal, the mixture of the pulverized coal and the nitrogen is directly heated, the external heating of the nitrogen is omitted, the iron making time is shortened, the two tanks can be alternately heated when connected in parallel, and the heating time waiting in the middle is shortened.
Claims (3)
1. Energy-conserving safe pulverized coal system that spouts, its characterized in that: the device comprises a cylinder body and a cone arranged at the bottom of the cylinder body, wherein a pressure relief port and a nitrogen pressurization port are arranged at the top of the cylinder body, a fluidization port and a drainage port are arranged at the bottom of the cone, a lifting lug, a support, a power supply connector and an inspection hole are arranged on the side surface of the cylinder body, the power supply connector is connected with a silicon nitride heating rod arranged in the cylinder body, and a bottom stamping port, an oxygen concentration detector, an intelligent thickness gauge and a discharge port are arranged on the side surface of the.
2. The energy-saving safe pulverized coal injection system according to claim 1, characterized in that: the discharge hole is communicated with the drain hole.
3. The energy-saving safe pulverized coal injection system according to claim 1, characterized in that: the barrel is equipped with two, and the top is through connecting pipe connection buggy entry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010460802.6A CN111719028A (en) | 2020-05-27 | 2020-05-27 | Energy-saving safe pulverized coal spraying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010460802.6A CN111719028A (en) | 2020-05-27 | 2020-05-27 | Energy-saving safe pulverized coal spraying system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111719028A true CN111719028A (en) | 2020-09-29 |
Family
ID=72565118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010460802.6A Pending CN111719028A (en) | 2020-05-27 | 2020-05-27 | Energy-saving safe pulverized coal spraying system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111719028A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115540573A (en) * | 2021-06-29 | 2022-12-30 | 五矿营口中板有限责任公司 | Safe powder preparation method of high-volatile bituminous coal |
| CN115807142A (en) * | 2022-12-06 | 2023-03-17 | 付光明 | Efficient vertical pulverized coal heating device and method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899542A (en) * | 2010-08-05 | 2010-12-01 | 中冶南方工程技术有限公司 | Coal injection system of blast furnace |
| CN101948940A (en) * | 2010-09-03 | 2011-01-19 | 南通海鹰机电集团有限公司 | Efficient, safe and environment-friendly blasting device |
| CN212504945U (en) * | 2020-05-27 | 2021-02-09 | 南通海鹰机电集团有限公司 | Energy-saving safe pulverized coal spraying system |
-
2020
- 2020-05-27 CN CN202010460802.6A patent/CN111719028A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899542A (en) * | 2010-08-05 | 2010-12-01 | 中冶南方工程技术有限公司 | Coal injection system of blast furnace |
| CN101948940A (en) * | 2010-09-03 | 2011-01-19 | 南通海鹰机电集团有限公司 | Efficient, safe and environment-friendly blasting device |
| CN212504945U (en) * | 2020-05-27 | 2021-02-09 | 南通海鹰机电集团有限公司 | Energy-saving safe pulverized coal spraying system |
Non-Patent Citations (2)
| Title |
|---|
| 沈晓东等: ""煤粉喷吹罐的定期检验"", 《中国特种设备安全》, vol. 31, no. 9, 30 September 2015 (2015-09-30), pages 47 - 49 * |
| 阎峰等: ""柳钢2号高炉冶炼技术的进步"", 《炼铁》, vol. 39, no. 2, 12 April 2020 (2020-04-12), pages 19 - 23 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115540573A (en) * | 2021-06-29 | 2022-12-30 | 五矿营口中板有限责任公司 | Safe powder preparation method of high-volatile bituminous coal |
| CN115807142A (en) * | 2022-12-06 | 2023-03-17 | 付光明 | Efficient vertical pulverized coal heating device and method |
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