CN202770225U - System utilizing cement kiln head exhaust gas as cooling air of grate cooler - Google Patents
System utilizing cement kiln head exhaust gas as cooling air of grate cooler Download PDFInfo
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- CN202770225U CN202770225U CN 201220479101 CN201220479101U CN202770225U CN 202770225 U CN202770225 U CN 202770225U CN 201220479101 CN201220479101 CN 201220479101 CN 201220479101 U CN201220479101 U CN 201220479101U CN 202770225 U CN202770225 U CN 202770225U
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- grate
- cooler
- exhaust gas
- cooling air
- grate cooler
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The utility model discloses a system utilizing cement kiln head exhaust gas as cooling air of a grate cooler. The system utilizing the cement kiln head exhaust gas as the cooling air of the grate cooler comprises a first valve (2), a first cooling fan (5), a second cooling fan (6) and the grate cooler (7). One end of the first valve (2) is connected with a kiln head chimney (1) through pipelines, and the other end of the first valve (2) is divided into two routes, wherein one route is connected with the first cooling fan (5) and three sections of the grate cooler (7) in sequence through the pipelines, and the other route is connected with the second cooling fan (6) and two sections of the grate cooler (7) in sequence through the pipelines. Due to the fact that the cement kiln head exhaust gas is utilized as the cooling air of the grate cooler, heat of the kiln exhaust gas can be sufficiently utilized, and therefore heat waste of the kiln exhaust gas is avoided. According to the system utilizing the cement kiln head exhaust gas as the cooling air of the grate cooler, take a clinker production line with output of 5000 tons per day for example, use quantity of the exhaust gas is about 150000 Nm 3/ h. Compared with a system utilizing air under normal temperature as the cooling air of the grate cooler in the prior art, according to the system utilizing the cement kiln head exhaust gas as the cooling air of the grate cooler, the heat can be saved by 27050081 kilojoules per hour which is equal to 924 kilograms per hour of standard coal.
Description
Technical field
This patent relates to cascaded utilization of energy and the energy-conserving and emission-cutting technology field in the cement production process, particularly a kind of system that utilizes cement kiln head waste gas to do the grate-cooler cooling air.
Background technology
According to " 12 " planning of country, the average hear rate that cement production enterprise need to burn till grog in the cement production process drops to 112kg standard coal/t from 115kg standard coal/t.The waste gas of cement production process will drop to below 200 ℃ through temperature after the cogeneration, and the exhaust energy that how to take full advantage of after cogeneration is the problem of present each cement production enterprise and R﹠D institution's primary study.
In the prior art, cement production process is used for the air under the normal temperature cooling air of one section, two sections of grate-coolers and three sections usually, so that clinker cooling.Air capacity under the normal temperature that cooling per kilogram grog needs is about 2.0m
3/ kg.Air under the normal temperature through with the grate-cooler heat exchange after temperature be elevated to 300-1000 ℃.Air after the intensification can be used for burning till Secondary Air, tertiary air and cogeneration, wherein discharge from the kiln tail for the air that burns till Secondary Air and tertiary air, the waste gas that is used for cogeneration enters atmosphere from the kiln hood chimney behind waste heat boiler and kiln hood electric precipitation, this will cause huge energy dissipation.
The main component of the waste gas of discharging from the kiln hood chimney is air, and its temperature is 60-200 ℃ (mean temperature is about 135 ℃).If utilize cement kiln head waste gas to do the grate-cooler cooling air, take 5000 tons/day clinker production line as example, the waste gas discharge capacity of discharging from the kiln hood chimney is about more than 150000 marks cubic meters/hour, as calculated as can be known its heat content that contains be about 28070905 kilojoules/hour.Yet, the heat content that the air under the normal temperature of equal number (calculating as 5 ℃ as example take mean annual temperature) contains be about 1020824 kilojoules/hour.The heat content difference that the two contains be about 27050081 kilojoules/hour.This shows, if utilize cement kiln head waste gas to do the grate-cooler cooling air, can save heat 27050081 kilojoules/hour, amount to 924 kg/hrs of standard coals.
Be starved of a kind of system that utilizes cement kiln head waste gas to do the grate-cooler cooling air.
Summary of the invention
The purpose of this invention is to provide a kind of system that utilizes cement kiln head waste gas to do the grate-cooler cooling air.
The system that utilizes cement kiln head waste gas to do the grate-cooler cooling air provided by the invention, this system comprise the first valve, the first cooling blower, the second cooling blower and grate-cooler; Described the first valve one end is connected with the kiln hood chimney by pipeline, the described first valve other end is divided into two-way, wherein lead up to pipeline successively with described the first cooling blower be connected three sections of grate-cooler and be connected, another road by pipeline successively with described the second cooling blower be connected two sections of grate-cooler and be connected.
Preferably, described system also comprise by pipeline respectively with described the first valve be connected the second valve that the first cooling blower is connected.
Preferably, described system further comprise by pipeline respectively with described the first valve be connected the 3rd valve that the second cooling blower is connected.
Preferably, the inside of described grate-cooler is equipped with pressure automatic adjusting device.
The present invention has following beneficial effect:
(1) described system utilizes cement kiln head waste gas to do the grate-cooler cooling air, thereby can take full advantage of the heat of kiln hood waste gas, has avoided the heat waste of kiln hood waste gas;
(2) described system utilizes cement kiln head waste gas to do the cooling air of grate-cooler, take 5000 tons/day clinker production line as example, the exhaust gas utilization amount be about 150000 the mark cubic meters/hour, do the cooling air of grate-cooler compares with the air under the prior art employing normal temperature, can save heat 27050081 kilojoules/hour, amount to 924 kg/hrs of standard coals.
Description of drawings
Fig. 1 is the system schematic of utilizing cement kiln head waste gas to do the grate-cooler cooling air provided by the invention.
The specific embodiment
Below in conjunction with drawings and Examples summary of the invention of the present invention is further described.
The system that utilizes cement kiln head waste gas to do the grate-cooler cooling air that the present embodiment provides comprises the first valve 2, the second valve 3, the 3rd valve 4, the first cooling blower 5, the second cooling blower 6 and grate-cooler 7, as shown in Figure 1.
One end of described the first valve 2 is connected with kiln hood chimney 1 by pipeline, the other end of described the first valve 2 is divided into two-way, the pipeline of wherein leading up to is connected with described the second valve 3, described the first cooling blower 5 and three sections of grate-cooler 7 of being connected successively, and another road is connected with described the 3rd valve 4, described the second cooling blower 6 and two sections of grate-cooler 7 of being connected successively by pipeline.Described the first valve 2, described the second valve 3 and described the 3rd valve 4 are all for the air-flow size of regulating its place pipeline.Described the first cooling blower 5 is used for and will sends into three sections of described grate cooler 7 from the waste gas of kiln hood chimney 1.Because the temperature of described grate cooler 7 inside is very high, is about 800-1100 ℃, therefore, the gas that described the first cooling blower 5 is sent into can make the clinker cooling in three sections of described grate-cooler 7.Similar with it, described the second cooling blower 6 is used for and will sends into two sections of described grate-cooler 7 from the waste gas of kiln hood chimney 1, so that the clinker cooling in two sections of described grate-cooler 7.In the present embodiment, one of described grate-cooler 7 section is adopted the air under the normal temperature to do cooling air.Temperature raise after described the first cooling blower 5 and described the second cooling blower 6 were sent into grog in the air of described grate-cooler 7 and the described grate-cooler 7 and carried out heat exchange, and the air after the intensification leads to the kiln hood chimney after cogeneration.
In the present embodiment, the inside of described grate-cooler 7 is equipped with pressure automatic adjusting device, can automatically regulate according to the pressure at described grate-cooler 7 each position and use air quantity.
Described system utilizes cement kiln head waste gas to do the grate-cooler cooling air, thereby can take full advantage of the heat of kiln hood waste gas, has avoided the heat waste of kiln hood waste gas.Described system utilizes cement kiln head waste gas to do the cooling air of grate-cooler, take 5000 tons/day clinker production line as example, the exhaust gas utilization amount be about 150000 the mark cubic meters/hour, do the cooling air of grate-cooler compares with the air under the prior art employing normal temperature, can save heat 27050081 kilojoules/hour, amount to 924 kg/hrs of standard coals.
Should be appreciated that the above detailed description of technical scheme of the present invention being carried out by preferred embodiment is illustrative and not restrictive.Those of ordinary skill in the art is reading on the basis of specification of the present invention and can make amendment to the technical scheme that each embodiment puts down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (4)
1. utilize cement kiln head waste gas to do the system of grate-cooler cooling air, it is characterized in that, this system comprises the first valve (2), the first cooling blower (5), the second cooling blower (6) and grate-cooler (7); Described the first valve (2) one ends are connected with kiln hood chimney (1) by pipeline, described the first valve (2) other end is divided into two-way, wherein lead up to pipeline successively with described the first cooling blower (5) be connected three sections of grate-cooler (7) and be connected, another road by pipeline successively with described the second cooling blower (6) be connected two sections of grate-cooler (7) and be connected.
2. the system that utilizes cement kiln head waste gas to do the grate-cooler cooling air according to claim 1, it is characterized in that, described system also comprise by pipeline respectively with described the first valve (2) be connected the second valve (3) that the first cooling blower (5) is connected.
3. the system that utilizes cement kiln head waste gas to do the grate-cooler cooling air according to claim 1 and 2, it is characterized in that, described system further comprise by pipeline respectively with described the first valve (2) be connected the 3rd valve (4) that the second cooling blower (6) is connected.
4. the system that utilizes cement kiln head waste gas to do the grate-cooler cooling air according to claim 1 is characterized in that, the inside of described grate-cooler (7) is equipped with pressure automatic adjusting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220479101 CN202770225U (en) | 2012-09-19 | 2012-09-19 | System utilizing cement kiln head exhaust gas as cooling air of grate cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220479101 CN202770225U (en) | 2012-09-19 | 2012-09-19 | System utilizing cement kiln head exhaust gas as cooling air of grate cooler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202770225U true CN202770225U (en) | 2013-03-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220479101 Expired - Fee Related CN202770225U (en) | 2012-09-19 | 2012-09-19 | System utilizing cement kiln head exhaust gas as cooling air of grate cooler |
Country Status (1)
| Country | Link |
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| CN (1) | CN202770225U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829638A (en) * | 2012-09-19 | 2012-12-19 | 河南易能达能源科技有限公司 | System using cement kiln front waste gas as cooling air of grate cooler |
-
2012
- 2012-09-19 CN CN 201220479101 patent/CN202770225U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829638A (en) * | 2012-09-19 | 2012-12-19 | 河南易能达能源科技有限公司 | System using cement kiln front waste gas as cooling air of grate cooler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130306 Termination date: 20130919 |