CN113636769A - Method and equipment for reducing carbon emission in cement clinker production - Google Patents
Method and equipment for reducing carbon emission in cement clinker production Download PDFInfo
- Publication number
- CN113636769A CN113636769A CN202110863181.0A CN202110863181A CN113636769A CN 113636769 A CN113636769 A CN 113636769A CN 202110863181 A CN202110863181 A CN 202110863181A CN 113636769 A CN113636769 A CN 113636769A
- Authority
- CN
- China
- Prior art keywords
- heat
- cement clinker
- equipment
- heater
- air
- 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.)
- Granted
Links
- 239000004568 cement Substances 0.000 title claims abstract description 34
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 26
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 15
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims abstract description 14
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 22
- GALOTNBSUVEISR-UHFFFAOYSA-N molybdenum;silicon Chemical compound [Mo]#[Si] GALOTNBSUVEISR-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000003345 natural gas Substances 0.000 claims abstract description 11
- 238000005485 electric heating Methods 0.000 claims abstract description 9
- 239000003245 coal Substances 0.000 claims abstract description 7
- 239000000843 powder Substances 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims abstract description 4
- 238000005245 sintering Methods 0.000 claims abstract description 3
- 239000007921 spray Substances 0.000 claims description 2
- 239000003034 coal gas Substances 0.000 abstract description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 239000002817 coal dust Substances 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/43—Heat treatment, e.g. precalcining, burning, melting; Cooling
- C04B7/44—Burning; Melting
- C04B7/46—Burning; Melting electric
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/43—Heat treatment, e.g. precalcining, burning, melting; Cooling
- C04B7/44—Burning; Melting
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B1/00—Details of electric heating devices
- H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
- H05B1/0227—Applications
- H05B1/023—Industrial applications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/0019—Circuit arrangements
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/02—Details
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
- H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
- H05B3/14—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
- H05B3/148—Silicon, e.g. silicon carbide, magnesium silicide, heating transistors or diodes
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Furnace Details (AREA)
Abstract
The invention relates to a method and equipment for reducing carbon emission in cement clinker production. A method for reducing carbon emission in cement clinker production is characterized in that: 1) adopting electric heating to provide heat for completing the heat required by cement clinker production; 2) the device of the invention is used for replacing the existing burner for sintering cement clinker, namely, the electric heating heat is used for generating heat to replace the coal powder or natural gas to generate heat for producing the clinker; 3) intelligent control, and the temperature can be continuously adjusted within the range of 0-1500 ℃. The equipment is characterized by comprising a hanger, wherein a walking trolley is arranged on the hanger, a heater is arranged below the walking trolley, and the heater is provided with three air channels, five air inlets, five air outlets and two layers of silicon-molybdenum rods; the heater is provided with an intelligent electric control system, and the temperature, the wind speed and the wind volume are continuously controllable and adjustable; and the outermost layer of the heater is provided with a high-thermal-conductivity dustproof material. The method and the equipment are suitable for enterprises producing cement and providing heat by burning pulverized coal or natural gas.
Description
Technical Field
The invention relates to a method and equipment for reducing carbon emission in cement clinker production, and belongs to the technical field of building materials.
Background
CO of cement industry2Discharging CO mainly from limestone calcination decomposition and pulverized coal combustion2According to the statistics of data, the cement production accounts for the global carbon dioxide emission8 percent of the total weight of the cement, wherein the China cement production accounts for 57 percent of the world, and CO is discharged in the China cement production2Occupies CO of the whole world24.56% of the discharge amount. According to the industry statistics, 940kg of CO is discharged when 1 ton of cement is produced2In 2020, the cement yield in China is 23.77 million tons, and the carbon dioxide is 22.34 million tons.
Aims at the common adoption of coal powder or natural gas as fuel to burn and produce clinker and discharge a large amount of CO in domestic and foreign cement clinker production enterprises2The invention relates to a method for reducing carbon emission in cement clinker production and a device thereof, which are used for replacing the conventional method for burning heat generated by burning coal powder or natural gas to sinter clinker and a burner thereof and reducing CO by combining the national aims of carbon peak-to-peak and carbon neutralization and the national current situation of vigorously developing clean energy2Discharge and improve social benefits.
Disclosure of Invention
The invention aims to provide a method and equipment for reducing carbon emission in cement clinker production, and the method and equipment are suitable for enterprises producing cement and providing heat by burning pulverized coal or natural gas.
In order to achieve the purpose, the technical scheme of the invention is as follows: a method for reducing carbon emission in cement clinker production is characterized in that:
1) adopting electric heating to provide heat for completing the heat required by cement clinker production;
2) the device of the invention is used for replacing the existing burner for sintering cement clinker, namely, the electric heating heat is used for generating heat to replace the coal powder or natural gas to generate heat for producing the clinker;
3) intelligent control, and the temperature can be continuously adjusted within the range of 0-1500 ℃.
The equipment is characterized in that the equipment is lifted by a hanger (1) and fixed in a certain height space, a walking trolley (2) is driven by a motor on the hanger and can continuously and freely move, a fan is respectively connected with air inlets (3), (5) and (7), three air flows respectively enter from different channels and are sprayed out from different air outlets and do not interfere with each other, heat generated by the equipment is provided by two layers of silicon-molybdenum rods (9) and (11), the generated heat is sprayed out from five types of air outlets (10), (12) and (13) and is taken out from a high-heat-conductivity dustproof shell (14), each air outlet is provided with a dustproof net, the angles of the air outlets (10) and (12) are 30, and the air outlets (10) and (12) are respectively 30.
The equipment comprises a hanger (1), wherein a walking trolley (2) is arranged on the hanger, a heater is arranged below the walking trolley, and the heater is provided with three air ducts (4), (6) and (8), five air inlets (3), (5) and (7), five air outlets (10), (12) and (13) and two silicon-molybdenum rods (9) and (11); the heater is provided with an intelligent electric control system, and the temperature, the wind speed and the wind volume are continuously controllable and adjustable; the outermost layer of the heater is provided with a high-thermal-conductivity dustproof material (14). The method and the equipment are suitable for enterprises producing cement and providing heat by burning pulverized coal or natural gas.
The advantages of the device are:
1) pure electric heating is adopted to replace the existing method for producing cement clinker by burning coal dust or natural gas at home and abroad, and CO generated by burning coal dust or natural gas is reduced2Carbon emission in the production process of the cement industry is reduced;
2) the device has simple structure and is convenient to replace and install;
3) the equipment fully considers the dustproof problems of the use working condition, including the angle of an air outlet, a protective net, a shell and the like;
4) the equipment adopts an intelligent control method, and is convenient for production personnel to operate.
Drawings
FIG. 1 is a front view of the apparatus of the present invention
FIG. 2 is a top view of the apparatus of the present invention
FIG. 3 is a right side view of the apparatus of the present invention
Wherein: 1. the device comprises a hanging bracket, 2, a traveling trolley, 3, a central air pipe air inlet, 4, a central air pipe, 5, a double-ring air pipe air inlet, 6, a double-ring air pipe, 7, a triple-ring air pipe air inlet, 8, a triple-ring air pipe, 9, an inner silicon-molybdenum rod, 10, a double-ring air outlet, 11, an outer silicon-molybdenum rod, 12, a triple-ring air outlet, 13, a central air pipe air outlet, 14 and a high-heat-conduction-material dustproof shell.
Detailed Description
Example 1:
a method for reducing carbon emissions from cement clinker production, comprising the steps of:
1) the heat required by the production of cement clinker is completed by adopting the heat generated by electric heating;
2) the equipment is electrified to enable the silicon-molybdenum rods (9) and (11) to generate heat, the fans of the five air inlets (3), (5) and (7) are opened, air flow enters through three different ventilation channels (4), (6) and (8), the heat generated by the silicon-molybdenum rods (9) and (11) is ejected from the five air outlets (10), (12) and (13) and is taken out from the high-heat-conductivity dustproof shell (14), and the heat required by cement clinker production is provided;
3) the device replaces the existing burner for firing cement clinker, namely, the electric heating heat is used for generating heat to replace the coal powder or natural gas to generate heat for producing the clinker;
4) the temperature is continuously adjustable within the range of 0-1500 ℃ by an intelligent control system.
The device is characterized in that a hanger (1) of the device is lifted and fixed in a space with a certain height, an electric control system controls a walking trolley (2) to continuously and freely move on the hanger (1), a fan is respectively connected with air inlets (3), (5) and (7), three strands of air respectively enter from different channels (4), (6) and (8) and spray out from different air outlets (10), (12) and (13), the three strands of air do not interfere with each other, heat generated by the device is provided by two layers of silicon-molybdenum rods (9) and (11) after being electrified, the generated heat is sprayed out from five types of air outlets (10), (12) and (13) and is taken out from a high-heat-conduction dustproof shell (14), each air outlet is provided with a high-temperature-resistant dustproof net, the angles of the air outlets (10) and (12) are 30 degrees, the air outlets (10) and (12) are respectively connected by bolts, and the device can be timely replaced according to the use condition. The temperature of the silicon-molybdenum rod and the air quantity and the air speed of different air ducts are adjusted through an intelligent control system, so that the temperature can be continuously adjusted within the range of 0-1500 ℃, and the requirements of various production working conditions are met.
The sizes of all parts of the equipment can be adjusted according to the heat required by production, and the equipment with different specifications and models can be produced.
Claims (3)
1. A method for reducing carbon emission in cement clinker production is characterized in that:
1) adopting electric heating to provide heat for completing the heat required by cement clinker production;
2) the device of the invention is used for replacing the existing burner for sintering cement clinker, namely, the electric heating heat is used for generating heat to replace the coal powder or natural gas to generate heat for producing the clinker;
3) intelligent control, and the temperature can be continuously adjusted within the range of 0-1500 ℃.
2. The equipment for reducing carbon emission in cement clinker production is characterized in that the equipment is hoisted by a hanger (1) and fixed in a certain height space, a walking trolley (2) is driven by a motor on the hanger and can move continuously and freely, a fan is connected with air inlets (3), (5) and (7) respectively, three air flows respectively enter from different channels and spray out from different air outlets without mutual interference, heat generated by the equipment is provided by two layers of silicon-molybdenum rods (9) and (11), the generated heat is sprayed out by five types of air outlets (10), (12) and (13) and is taken out by a high-heat-conductivity dustproof shell (14), each air outlet is provided with a dustproof net, wherein the angles of the air outlets (10) and (12) are 30 degrees, and the number of the air outlets (10) and (12) is 30 respectively.
3. The equipment for reducing carbon emission in cement clinker production is characterized by comprising a hanger (1), wherein a traveling trolley (2) is arranged on the hanger, a heater is arranged below the traveling trolley, and the heater is provided with three air ducts (4), (6) and (8), five air inlets (3), (5) and (7), five air outlets (10), (12) and (13) and two layers of silicon-molybdenum rods (9) and (11); the heater is provided with an intelligent electric control system, and the temperature, the wind speed and the wind volume are continuously controllable and adjustable; the outermost layer of the heater is provided with a high-thermal-conductivity dustproof material (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110863181.0A CN113636769B (en) | 2021-07-29 | 2021-07-29 | Burner and method for reducing carbon emission in cement clinker production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110863181.0A CN113636769B (en) | 2021-07-29 | 2021-07-29 | Burner and method for reducing carbon emission in cement clinker production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113636769A true CN113636769A (en) | 2021-11-12 |
| CN113636769B CN113636769B (en) | 2023-03-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110863181.0A Active CN113636769B (en) | 2021-07-29 | 2021-07-29 | Burner and method for reducing carbon emission in cement clinker production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113636769B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114477812A (en) * | 2022-01-12 | 2022-05-13 | 成都建筑材料工业设计研究院有限公司 | Low-carbon, low-nitrogen and coal-saving cement clinker sintering system and production method |
| CN115159877A (en) * | 2022-07-06 | 2022-10-11 | 西安康桥能源技术有限责任公司 | Method for producing cement clinker by using electric power or natural gas as driving heat source |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2529083Y (en) * | 2002-04-02 | 2003-01-01 | 王姝森 | Rotary kiln five-duct coal burner |
| US20040118323A1 (en) * | 2002-12-23 | 2004-06-24 | Oates David Bridson | Process for incorporating coal ash into cement clinker |
| DE102008023898B3 (en) * | 2008-05-16 | 2009-07-02 | Polysius Ag | Producing cement clinker, comprises preheating raw material in pre-heater, calcinating preheated raw material in calcinator, combusting deacidified raw material in furnace to form cement clinker, and cooling burnt cement clinker in cooler |
| CN102519246A (en) * | 2011-12-31 | 2012-06-27 | 西安建筑科技大学 | Atmosphere-controllable high-speed rotary kiln |
| CN211177900U (en) * | 2019-07-30 | 2020-08-04 | 唐山不锈钢有限责任公司 | Double-channel fuel burner of rotary kiln |
| CN112723705A (en) * | 2020-12-30 | 2021-04-30 | 山东大学 | Method for using sludge subjected to calcium-increasing drying pretreatment as main raw material and fuel for cement production |
| CN112923357A (en) * | 2021-04-07 | 2021-06-08 | 南京建安机械制造有限公司 | Low-nitrogen energy-saving full-automatic six-duct pulverized coal burner |
-
2021
- 2021-07-29 CN CN202110863181.0A patent/CN113636769B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2529083Y (en) * | 2002-04-02 | 2003-01-01 | 王姝森 | Rotary kiln five-duct coal burner |
| US20040118323A1 (en) * | 2002-12-23 | 2004-06-24 | Oates David Bridson | Process for incorporating coal ash into cement clinker |
| DE102008023898B3 (en) * | 2008-05-16 | 2009-07-02 | Polysius Ag | Producing cement clinker, comprises preheating raw material in pre-heater, calcinating preheated raw material in calcinator, combusting deacidified raw material in furnace to form cement clinker, and cooling burnt cement clinker in cooler |
| CN102519246A (en) * | 2011-12-31 | 2012-06-27 | 西安建筑科技大学 | Atmosphere-controllable high-speed rotary kiln |
| CN211177900U (en) * | 2019-07-30 | 2020-08-04 | 唐山不锈钢有限责任公司 | Double-channel fuel burner of rotary kiln |
| CN112723705A (en) * | 2020-12-30 | 2021-04-30 | 山东大学 | Method for using sludge subjected to calcium-increasing drying pretreatment as main raw material and fuel for cement production |
| CN112923357A (en) * | 2021-04-07 | 2021-06-08 | 南京建安机械制造有限公司 | Low-nitrogen energy-saving full-automatic six-duct pulverized coal burner |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114477812A (en) * | 2022-01-12 | 2022-05-13 | 成都建筑材料工业设计研究院有限公司 | Low-carbon, low-nitrogen and coal-saving cement clinker sintering system and production method |
| CN115159877A (en) * | 2022-07-06 | 2022-10-11 | 西安康桥能源技术有限责任公司 | Method for producing cement clinker by using electric power or natural gas as driving heat source |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113636769B (en) | 2023-03-31 |
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