CN215086158U - Dedicated zero cost self absorption desulphurization unit of cement plant - Google Patents
Dedicated zero cost self absorption desulphurization unit of cement plant Download PDFInfo
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- CN215086158U CN215086158U CN202121136016.7U CN202121136016U CN215086158U CN 215086158 U CN215086158 U CN 215086158U CN 202121136016 U CN202121136016 U CN 202121136016U CN 215086158 U CN215086158 U CN 215086158U
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Abstract
A zero-cost self-absorption desulfurization device special for a cement plant comprises a cement production preheating system, wherein a material taking port for extracting hot raw materials is arranged on the cement production preheating system, and a material taking cooling mechanism, a desulfurizer generating mechanism and a lifter are sequentially connected to the material taking port; the material taking and cooling mechanism comprises a material taking pipe connected to a material taking opening, a material taking valve is arranged at the position of the material taking opening, and a material taking adjusting valve for adjusting the flow of hot raw materials in the material taking pipe and a fan for generating negative pressure to realize pneumatic conveying are arranged on the material taking pipe; the desulfurizer generating mechanism comprises a reactor, stirring blades are arranged in the reactor, the upper part of the reactor is connected with a material taking pipe through a material-gas separator and is connected with a water pipeline through a water taking valve, and the bottom of the reactor is connected with a desulfurizer powder bin; the lower feed inlet of the hoister is connected with the desulfurizer powder bin through a conveying assembly, and the upper discharge outlet of the hoister is connected with a cement production preheating system. The utility model is used for reduce cost and manpower that cement manufacture enterprise produced because of the desulfurization by a wide margin.
Description
Technical Field
The utility model relates to a cement manufacture equipment field, specific dedicated zero cost self absorption desulphurization unit of cement plant that says so.
Background
The rotary cement kiln is one kind of cement kiln and is the main equipment for dry and wet production line of cement clinker. In cement production, a cement production preheating system is connected to the feed end of the novel preheater cement rotary kiln, and cement production raw materials are preheated by the cement production preheating system and then are put into the cement rotary kiln. The cement production raw material contains sulfur element, so that sulfur oxide is inevitably generated in the rotary cement kiln production. Because of the strong pollution of the oxysulfide, in order to reduce the pollution emission to the relevant standards, cement production enterprises generally put in the desulfurizer such as externally purchased ammonia water, hydrated lime and the like to absorb the generated oxysulfide so as to reach the emission standards.
Although the problem of waste gas pollution generated in the production of the rotary cement kiln can be solved by using the purchased desulfurizing agent, the purchased desulfurizing agent also increases the production cost of cement production enterprises. Meanwhile, the purchased desulfurizer also consumes a small amount of labor cost in the process links of purchase, transportation, putting and the like.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a dedicated zero cost self absorption desulphurization unit of cement plant reduces cost and manpower that cement manufacture enterprise produced because of the desulfurization by a wide margin.
In order to solve the technical problem, the utility model discloses a concrete scheme does: a zero-cost self-absorption desulfurization device special for a cement plant comprises a cement production preheating system for feeding materials into a cement rotary kiln, wherein a material taking port for extracting hot raw materials is arranged on the cement production preheating system, and a material taking cooling mechanism, a desulfurizer generating mechanism and a lifter are sequentially connected to the material taking port; the material taking and cooling mechanism comprises a material taking pipe connected to a material taking opening, a material taking valve is arranged at the position of the material taking opening, and a material taking adjusting valve for adjusting the flow of hot raw materials in the material taking pipe and a fan for generating negative pressure to realize pneumatic conveying are arranged on the material taking pipe; the desulfurizer generating mechanism comprises a reactor, stirring blades are arranged in the reactor, the upper part of the reactor is connected with a material taking pipe through a material-gas separator and is connected with a water pipeline through a water taking valve, and the bottom of the reactor is connected with a desulfurizer powder bin; the lower feed inlet of the hoister is connected with a desulfurizer powder bin through a conveying assembly, and the upper discharge outlet of the hoister is connected with a cement production preheating system.
Preferably, the device also comprises a metering and conveying mechanism used for quantitatively conveying the desulfurizer in the desulfurizer powder bin into the elevator, the metering and conveying mechanism comprises a metering device arranged at a discharge port below the desulfurizer powder bin and a conveying assembly arranged at a position below the metering device, a feed port of the conveying assembly is connected with the metering device, and a discharge port is connected with a lower feed port of the elevator.
Preferably, the conveying component is an auger, a belt conveyor with a dust cover or a conveying chute.
Preferably, sealing soft connections are arranged between the tail end of the conveying assembly and a lower feed inlet of the elevator and between the material-gas separator and the reactor.
Preferably, the connection position of the upper discharge port of the hoister and the cement production preheating system is higher than the material taking port.
The utility model discloses preheat the system on cement manufacture and go up through getting material cooling body, the desulfurizer produces formation closed circulation such as mechanism and lifting machine, the hot raw meal of cement processing (CaO) that will take out in the system is preheated by cement manufacture (CaO, K2O, oxides such as Na2O, it is high to have reaction activity, granule the inside hole overall arrangement is flourishing, characteristics such as specific surface area are big) generate desulfurizer (calcium hydrate and the raw meal of unreacted and cooling) with water stirring through the reactor, the desulfurizer gets into cement manufacture once more and preheats the system after, with the oxysulfide reaction or the absorption of cement rotary kiln production, thereby reached and not need purchase the desulfurizer outward and realize the desulfurization effect of "zero cost" of cement rotary kiln result desulfurization promptly, and then reduced the cost of cement manufacture enterprise to the desulfurization input by a wide margin, the productivity effect of enterprise has been increased.
The utility model discloses rely on current conventional cement production process equipment, be particularly suitable for current cement manufacture enterprise to reform transform, adaptability is stronger, is suitable for the popularization.
Drawings
Fig. 1 is a schematic structural view of the present invention;
the labels in the figure are: 1. cement production preheating system 2, material taking port 3, material taking valve 4, material taking pipe 5, material taking adjusting valve 6, fan 7, material gas separator 8, water taking valve 9, water pipeline 10, elevator 11, reactor 12, first switch valve 13, desulfurizer powder bin 14, second switch valve 15, metering device 16 and conveying assembly.
Detailed Description
The utility model discloses a dedicated zero cost self absorption desulphurization unit of cement plant mainly relies on the cement manufacture preheating system 1 in conventional cement manufacture process equipment. As shown in fig. 1, the system mainly comprises a material taking port 2 arranged on a cement production preheating system 1, and a material taking cooling mechanism, a desulfurizer generating mechanism, a metering conveying mechanism and a lifter 10 which are sequentially arranged behind the material taking port 2.
The material taking and cooling mechanism is used for taking out a small amount of hot raw materials in the cement production preheating system 1 and conveying the hot raw materials to the desulfurizer generating mechanism. The material taking and cooling mechanism mainly comprises a material taking pipe 4 connected to the material taking port 2. The material taking pipe 4 is distributed obliquely, the upper end of the material taking pipe is connected with the material taking port 2, and the lower end of the material taking pipe is connected with the desulfurizer generating mechanism. The material taking pipe 4 has a certain length, so that the hot raw meal (containing uncooled oxides of CaO, K2O, Na2O and the like) taken out from the cement production preheating system 1 is cooled to 70-80 ℃ by natural cooling when being conveyed to the desulfurizer generating mechanism. The material taking pipe 4 is sequentially provided with a material taking valve 3, a material taking adjusting valve 5 and a fan 6 from the lower part of the material taking port 2. The material taking valve 3 is a full-open valve, is fully opened in the material taking process, and is in a fully-closed state when the material is not taken. The material taking regulating valve 5 is used for regulating the flow of hot raw materials in the material taking pipe 4 so as to adapt to the yield of a downstream desulfurizer generating mechanism. The fan 6 is used for generating negative pressure in the take-off pipe 4 to form pneumatic conveying power for conveying hot raw meal.
The desulfurizer generating mechanism comprises a reactor 11, and a stirring blade is arranged in the reactor 11. The upper part of the reactor 11 is connected with a material taking pipe 4 through a material-gas separator 7 and is connected with a water pipeline 9 through a water taking valve 8, and the bottom of the reactor 11 is connected with a desulfurizer powder bin 13.
The metering and conveying mechanism comprises a metering device 15 arranged at a discharge port below the desulfurizer powder bin 13 and a conveying assembly 16 arranged at a position below the metering device 15. The feed inlet of the conveying assembly 16 is connected with the metering device 15, and the discharge outlet is connected with the lower feed inlet of the elevator 10. The conveyor assembly 16 in this embodiment is an auger and a conveyor chute, and in other embodiments, can be implemented by a belt conveyor with dust covers or other conventional conveying equipment.
The lower part feed inlet of the elevator 10 is connected with a desulfurizer powder bin 13 through a conveying component 16, and the upper part discharge outlet of the elevator 10 is connected with the cement production preheating system 1. The connection position of the upper discharge port of the hoister 10 and the cement production preheating system 1 is higher than the material taking port 2.
The specific implementation method of this embodiment is as follows:
firstly, a fan 6 is started to generate negative pressure in a material taking pipe 4, then a material taking regulating valve 5 and a material mixing valve 3 are opened in sequence, hot raw materials in a cement production preheating system 1 enter a desulfurizer generating mechanism from the material taking pipe 4, the flow of the hot raw materials is regulated through the material taking regulating valve 5, and the hot raw materials are naturally cooled in the conveying process. The cooled raw material and the conveying gas are fed into a material-gas separator 7 and then separated, the cooled raw material enters a reactor 11 from the material-gas separator 7, and the separated gas returns to a kiln tail waste gas pipeline of a preheating system. The water intake valve 8 is opened to introduce water with a corresponding proportion into the reactor 11, and then the water is mixed and stirred for reaction, a desulfurizer is generated by the reaction, the main body of the desulfurizer is calcium hydroxide, and the balance is unreacted oxides such as CaO, K2O, Na2O, and the like, and the desulfurizer has the characteristics of high reaction activity, vigorous arrangement of pores in particles, large specific surface area and the like, and has higher reaction rate with SO 2. After the desulfurizer is generated, the first switch valve 12 is opened to guide the desulfurizer into the desulfurizer powder bin 13 for storage.
And when the desulfurization process is required, calculating the required target amount of the desulfurizing agent according to the sulfur content. The second on-off valve 14 is opened to introduce the desulfurizing agent into the metering device 15 and the metering device is weighed to obtain a target amount, and then the second on-off valve 14 is closed. The weighed and measured desulfurizer is conveyed to a lifter 10 through a conveying auger and a conveying chute, the lifter 10 lifts the desulfurizer and then conveys the lifted desulfurizer into a cement production preheating system 1 again, and sulfur oxides generated by the cement rotary kiln are reacted to generate harmless solid gypsum components to be left in the generated cement. In the embodiment, the sealing soft connections are arranged between the tail end of the conveying assembly 16 and the lower feed inlet of the hoister 10 and between the material-gas separator 7 and the reactor 11, so that dust pollution generated in the desulfurization process is avoided.
Claims (5)
1. The utility model provides a dedicated zero cost self absorption desulphurization unit of cement plant, is including being arranged in preheating system (1) to the cement manufacture of rotary cement kiln feed, its characterized in that: a material taking port (2) for extracting hot raw materials is arranged on the cement production preheating system (1), and a material taking cooling mechanism, a desulfurizer generating mechanism and a lifter (10) are sequentially connected to the material taking port (2); the material taking and cooling mechanism comprises a material taking pipe (4) connected to the material taking port (2), a material taking valve (3) is arranged at the position of the material taking port (2), and a material taking regulating valve (5) for regulating the flow of hot raw materials in the material taking pipe (4) and a fan (6) for generating negative pressure to realize pneumatic conveying are arranged on the material taking pipe (4); the desulfurizer generation mechanism comprises a reactor (11), a stirring paddle is arranged in the reactor (11), the upper part of the reactor (11) is connected with the material taking pipe (4) through a material-gas separator (7) and is connected with the water pipeline (9) through a water taking valve (8), and the bottom of the reactor (11) is connected with a desulfurizer powder bin (13); the lower feed inlet of the elevator (10) is connected with a desulfurizer powder bin (13) through a conveying assembly (16), and the upper discharge outlet of the elevator (10) is connected with a cement production preheating system (1).
2. The cement plant dedicated zero-cost self-absorption desulfurization device according to claim 1, characterized in that: the desulfurizer powder conveying device is characterized by further comprising a metering conveying mechanism used for quantitatively conveying a desulfurizer in the desulfurizer powder bin (13) into the hoister (10), wherein the metering conveying mechanism comprises a metering device (15) arranged at a discharge port below the desulfurizer powder bin (13) and a conveying assembly (16) arranged at a discharge port below the metering device (15), a feed port of the conveying assembly (16) is connected with the metering device (15), and a discharge port is connected with a lower feed port of the hoister (10).
3. The cement plant dedicated zero-cost self-absorption desulfurization device according to claim 2, characterized in that: the conveying component (16) is a packing auger, a belt conveyor with a dust cover or a conveying chute.
4. The cement plant dedicated zero-cost self-absorption desulfurization device according to claim 2, characterized in that: sealing soft connections are arranged between the tail end of the conveying component (16) and a lower feed inlet of the elevator (10) and between the material-gas separator (7) and the reactor (11).
5. The cement plant dedicated zero-cost self-absorption desulfurization device according to claim 1, characterized in that: the connecting position of the upper discharge hole of the elevator (10) and the cement production preheating system (1) is higher than the material taking hole (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121136016.7U CN215086158U (en) | 2021-05-26 | 2021-05-26 | Dedicated zero cost self absorption desulphurization unit of cement plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121136016.7U CN215086158U (en) | 2021-05-26 | 2021-05-26 | Dedicated zero cost self absorption desulphurization unit of cement plant |
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| CN215086158U true CN215086158U (en) | 2021-12-10 |
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| CN202121136016.7U Active CN215086158U (en) | 2021-05-26 | 2021-05-26 | Dedicated zero cost self absorption desulphurization unit of cement plant |
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2021
- 2021-05-26 CN CN202121136016.7U patent/CN215086158U/en active Active
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