CN210097334U - Cement kiln desulfurization equipment - Google Patents
Cement kiln desulfurization equipment Download PDFInfo
- Publication number
- CN210097334U CN210097334U CN201920786638.0U CN201920786638U CN210097334U CN 210097334 U CN210097334 U CN 210097334U CN 201920786638 U CN201920786638 U CN 201920786638U CN 210097334 U CN210097334 U CN 210097334U
- Authority
- CN
- China
- Prior art keywords
- frequency conversion
- dust collector
- bag dust
- slaker
- high temperature
- 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.)
- Active
Links
Images
Landscapes
- Treating Waste Gases (AREA)
Abstract
The utility model discloses a cement kiln sweetener, including the unloading pipe, the unloading pipe is connected with first high temperature resistant frequency conversion screw conveyer, high temperature resistant frequency conversion screw conveyer one side is connected with the cold air duct, bag dust collector is connected to cold air duct one end, and the other end accesss to the atmosphere, install dust exhausting fan on the bag dust collector, the stationary flow storehouse is installed to bag dust collector below, the bag dust collector passes through second high temperature resistant frequency conversion screw conveyer and is connected with the stationary flow storehouse, glassware under the frequency conversion is installed to stationary flow storehouse below, glassware under the frequency conversion is installed lime slaker one side and is installed spray pipe and slaker fan respectively, lime slaker below is installed raw material and is gone into kiln chuteAnd a preheater is arranged below the raw material feeding chute. The utility model has simple principle and process, and through measurement and calculation, when the discharge amount of sulfur dioxide is 800mg/Nm3In the above case, the sulfur removal effect is the best.
Description
Technical Field
The utility model relates to a cement production facility, concretely relates to cement kiln sweetener.
Background
As the national economy continues to grow, the real estate industry continues to become hotter, which has led to annual increases in cement production. Sulfide discharged by the cement industry is one of main causes of air pollution, but with the gradual increase of haze weather in recent years, the state strengthens the supervision of environmental protection, an electronic display board is arranged at the door of each domestic cement production enterprise, indexes of sulfide and nitrogen oxide are arranged on the door, data of the indexes are transmitted to the national environmental protection department in real time, and most of the existing cement production equipment can not meet the environmental protection requirement.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects in the prior art, the inventor combines the cement production experience of many years, finds that the sulfide in the cement production can be well removed by utilizing the calcium oxide substance contained in the cement material and generating calcium hydroxide through the reaction with water, and develops the cement kiln desulfurization equipment with simple process and high desulfurization efficiency.
In order to achieve the above object, the utility model provides a following technical scheme: a cement kiln desulfurization device comprises a feeding pipe, the feeding pipe is connected with a first high-temperature resistant variable-frequency screw conveyor, one side of the first high-temperature-resistant variable-frequency screw conveyor is connected with a cold air pipeline, one end of the cold air pipeline is connected with a bag dust collector, the other end of the cold air pipeline is communicated with the atmosphere, the cloth bag dust collector is provided with a dust removal fan, a steady flow bin is arranged below the cloth bag dust collector, the cloth bag dust collector is connected with the steady flow bin through a second high temperature resistant variable frequency screw conveyor, a variable frequency feeder is arranged below the steady flow bin, a lime slaker is arranged below the variable-frequency feeder, a spray pipe and a slaker fan are respectively arranged at one side of the lime slaker, a raw material feeding chute is arranged below the lime slaker, a bucket elevator is arranged below the raw material feeding chute, and the bucket elevator conveys the raw materials to a secondary cylinder ascending pipeline of the preheater.
As known from the following chemical equation, calcium oxide substances contained in cement materials react with water to generate calcium hydroxide, the calcium hydroxide reacts with sulfur dioxide to generate calcium sulfite and water, and the calcium sulfite further reacts with oxygen to generate calcium sulfate, so that the aim of effectively removing sulfur is fulfilled.
CaO+H2O＝Ca(OH)2
2Ca(OH)2+2SO2+O2＝2CaSO4+2H2O
Furthermore, the stable material bin can play a role in cooling and transferring besides the metering function, so that severe reaction of materials entering the lime slaker due to overhigh temperature can be avoided.
Furthermore, a three-way valve is installed at the joint of the blanking pipe and the first high-temperature-resistant variable-frequency screw conveyor.
Furthermore, the lower part of the steady flow bin is symmetrically provided with a meter, the meter is connected with the steady flow bin through a skirt, and the installed meter can accurately measure the weight of materials put into the lime slaker.
Furthermore, a flowmeter is installed on the water spraying pipe, and a plurality of spray heads are arranged at one end of the water spraying pipe extending into the lime slaker.
Further, the heat-resistant temperature of the first heat-resistant screw conveyer and the second heat-resistant screw conveyer is not lower than 1000 ℃.
Further, the heat-resistant temperature range of the bag dust collector is 300 ℃ to 350 ℃.
Furthermore, the dust removal bag arranged in the bag dust collector is made of basalt fiber needled felt. The sustainable temperature does not exceed 300 ℃ and the instantaneous temperature does not exceed 350 ℃.
Compared with the prior art, the utility model has the advantages of it is following: the decomposed materials containing a large amount of calcium oxide are fully utilized, cooled by a cold air pipeline, collected by a dust collector system, sent into a lime slaker, and quantitatively sprayed with water and stirred to generate calcium hydroxide, and the calcium hydroxide enters the system to absorb sulfur dioxide gas to generate calcium sulfite and water, wherein the calcium sulfite further reacts with oxygen to generate calcium sulfate, and the flue gas desulfurization task is completed. The utility model has simple principle and process, and through measurement and calculation, when the discharge amount of sulfur dioxide is 800mg/Nm3In the above case, the sulfur removal effect is the best.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the flow stabilizing bin.
FIG. 3 is a schematic view of the mechanism of the sprinkler pipe.
Reference numerals: 1. the device comprises a feeding pipe, 2, a first high-temperature-resistant variable-frequency screw conveyor, 3, a cold air pipeline, 4, a bag dust collector, 5, a dust removal fan, 6, a second high-temperature-resistant variable-frequency screw conveyor, 7, a steady flow bin, 8, a water spray pipe, 9, a digester fan, 10, a lime digester, 11, a raw material kiln-entering chute, 12, a preheater, 13, a meter, 14, a skirt, 15, a flowmeter, 16, a spray head, 17 and a variable-frequency feeder.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
As shown in fig. 1-3, the cement kiln desulfurization device in this embodiment includes a feeding pipe 1, the feeding pipe 1 is connected to a first high-temperature-resistant variable-frequency screw conveyor 2, one side of the first high-temperature-resistant variable-frequency screw conveyor 2 is connected to a cold air pipe 3, one end of the cold air pipe 3 is connected to a cloth bag dust collector 4, the other end of the cold air pipe is communicated to the atmosphere, a dust removal fan 5 is installed on the cloth bag dust collector 4, a steady flow bin 7 is installed below the cloth bag dust collector 4, the cloth bag dust collector 4 is connected to a steady flow bin 7 through a second high-temperature-resistant variable-frequency screw conveyor 6, a variable-frequency discharger 17 is installed below the steady flow bin 7, a lime slaker 10 is installed below the variable-frequency discharger 17, a water spray pipe 8 and a slaker fan 9 are installed on one side of the lime slaker 10, a chute 11 for feeding raw material into the kiln is installed below the lime slaker, a bucket elevator is arranged below the raw material kiln-entering chute 11, and the bucket elevator conveys the raw materials to a preheater 12.
In this embodiment, the steady flow bin 7 can perform the functions of temperature reduction and transit in addition to the metering function, so as to prevent the materials entering the lime slaker 10 from violent reaction due to over-high temperature.
In this embodiment, a three-way valve is installed at the connection between the blanking pipe 1 and the first high-temperature-resistant variable-frequency screw conveyor 2. Further, the heat-resistant temperature of the first heat-resistant screw conveyor 2 and the second heat-resistant screw conveyor 6 is not lower than 1000 ℃.
The heat resistant temperature range of the bag house 4 in this embodiment is 300 to 350 ℃.
In this embodiment, the dust removing bag installed inside the bag dust collector 4 is made of basalt fiber needled felt. The sustainable temperature does not exceed 300 ℃ and the instantaneous temperature does not exceed 350 ℃.
As shown in fig. 2, the meter 13 is symmetrically installed at the lower part of the steady flow bin 7, the meter 13 is connected with the steady flow bin 7 through a skirt 14, and the installed meter 13 can accurately measure the weight of the materials put into the lime slaker 10.
As shown in fig. 3, the water spray pipe 8 is provided with a flow meter 15, and the end of the water spray pipe extending to the interior of the lime slaker 10 is provided with a plurality of spray heads 16.
When the equipment is in specific operation, the dust removal fan 5 is started at first, high-temperature materials containing calcium oxide after being decomposed in the previous process fall into the first high-temperature-resistant variable-frequency screw conveyor 2 through the blanking pipe 1 by means of gravity, and the materials pass through cold air under the negative pressure suction force of the dust removal fan 5The pipeline 3 enters a cloth bag dust collector 4, the cloth bag dust collector 4 is collected and then is sent into a steady flow bin 7 through a second high temperature resistant variable frequency screw conveyor 6, the temperature is first reduced in the steady flow bin 7, meanwhile, materials can be weighed through a meter 13, the whole production progress is adjusted, then the materials enter a lime slaker 10 through a variable frequency blanking device 17, at the moment, a slaker fan 9 is started, the water spraying flow is adjusted through a flow meter 15 on a water spraying pipe 8, water flow is sprayed out through a spray nozzle 16 and can fully react with the materials to generate calcium hydroxide, and then the materials containing the calcium hydroxide are conveyed to a raw material kiln chute 11 to enter a preheater 12; in the preheater 12 with SO2The flue gas is converged to generate a chemical reaction to generate calcium sulfite and water, wherein the calcium sulfite further reacts with oxygen to generate calcium sulfate, thereby achieving the aim of removing sulfur. During normal production, can change production material volume through adjusting first high temperature resistant frequency conversion screw conveyer 2 and second high temperature resistant frequency conversion screw conveyer 6 to guarantee that the flue gas emission is up to standard.
It should be noted that the above-mentioned embodiments are illustrative and not restrictive of the technical solutions of the present invention, and equivalents of those skilled in the art or other modifications made according to the prior art are intended to be included within the scope of the claims of the present invention as long as they do not exceed the spirit and scope of the technical solutions of the present invention.
Claims (4)
1. The cement kiln desulfurization equipment is characterized in that: including the unloading pipe, the unloading pipe is connected with first high temperature resistant frequency conversion screw conveyer, first high temperature resistant frequency conversion screw conveyer one side and cold air duct connection, cloth bag dust collector is connected to cold air duct one end, and the other end accesss to the atmosphere, install dust exhausting fan on the cloth bag dust collector, the stationary flow storehouse is installed to cloth bag dust collector below, the cloth bag dust collector passes through the second high temperature resistant frequency conversion screw conveyer and is connected with the stationary flow storehouse, the glassware under the frequency conversion is installed to stationary flow storehouse below, the lime slaker is installed to the glassware below under the frequency conversion, and spray pipe and slaker fan are installed respectively to lime slaker one side, the kiln chute is installed to lime slaker below, the raw material is gone into kiln chute below and is installed the bucket elevator, and the bucket elevator carries the second grade section of thick bamboo tedding pipeline with the raw material.
2. The cement kiln desulfurization apparatus according to claim 1, characterized in that: and a three-way valve is arranged at the joint of the blanking pipe and the first high-temperature-resistant variable-frequency screw conveyor.
3. The cement kiln desulfurization apparatus according to claim 1, characterized in that: the metering device is symmetrically installed on the lower portion of the steady flow bin and connected with the steady flow bin through the skirt.
4. The cement kiln desulfurization apparatus according to claim 1, characterized in that: the water spraying pipe is provided with a flow meter, and one end of the water spraying pipe extending into the lime slaker is provided with a plurality of spray heads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920786638.0U CN210097334U (en) | 2019-05-29 | 2019-05-29 | Cement kiln desulfurization equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920786638.0U CN210097334U (en) | 2019-05-29 | 2019-05-29 | Cement kiln desulfurization equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210097334U true CN210097334U (en) | 2020-02-21 |
Family
ID=69562084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920786638.0U Active CN210097334U (en) | 2019-05-29 | 2019-05-29 | Cement kiln desulfurization equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210097334U (en) |
-
2019
- 2019-05-29 CN CN201920786638.0U patent/CN210097334U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207287126U (en) | A kind of Hazards in Power Plant minimum discharge desulfurization method of limestone-gypsum system | |
| CN207385185U (en) | NID semi-dry process flue gas desulphurization systems | |
| CN102974211A (en) | Circulating fluidized bed boiler in-furnace desulfurization device | |
| CN101357298A (en) | Circulating fluid bed flue gas desulfurization technique and device | |
| CN104190243B (en) | The coal-burning boiler method of carbide slag desulfurization and equipment thereof | |
| CN217139940U (en) | Calcium-based dry desulfurization system for flue gas in coking industry | |
| CN108525508A (en) | The method for carrying out flue gas desulfurization using cement slurry | |
| CN105080329A (en) | Dust removal and flue gas desulfurization and purification process and device for coke oven | |
| CN207951100U (en) | Properties of CFB kiln gas discharges running optimizatin cost calculating system | |
| CN102564149A (en) | Industrial kiln waste gas purifying and recovery process and industrial kiln waste gas purifying and recovery equipment | |
| CN110052153B (en) | Desulfurizing agent preparation unit based on cement clinker production line calcium cycle | |
| CN110052158B (en) | Calcium circulation dry desulfurization system based on cement clinker production line | |
| CN210097334U (en) | Cement kiln desulfurization equipment | |
| CN209815990U (en) | Dry acetylene sludge acetylene gas and silicon iron recycling device | |
| CN209530529U (en) | SO in a kind of coal-fired flue-gas3Removing system | |
| CN201085994Y (en) | Circulation fluidized bed smoke desulphurizing device | |
| CN106215678B (en) | Cement kiln semi-dry desulfurization system | |
| CN111575435B (en) | Primary dry dedusting system and method for ultra-clean gas recovery converter | |
| CN102530919A (en) | Method and device for dehydrating green coke by utilizing low-temperature flue gas of calcination system | |
| CN105727731A (en) | Desulfurization system and desulfurization method for improving boiler efficiency | |
| CN208145761U (en) | A kind of in-furnace calcium spraying dry method desulfuration system | |
| CN205216573U (en) | Boiler dry process desulphurization unit | |
| CN202893181U (en) | Desulphurization device in circulating fluidized bed boiler | |
| CN211328914U (en) | Composite catalytic desulfurization system | |
| CN208975493U (en) | A kind of flue gas on-line monitoring equipment for desulfurization, dedusting |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |