CN217746492U - Slurry preparation and conveying system for flue gas deacidification of waste incinerator - Google Patents
Slurry preparation and conveying system for flue gas deacidification of waste incinerator Download PDFInfo
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- CN217746492U CN217746492U CN202221415897.0U CN202221415897U CN217746492U CN 217746492 U CN217746492 U CN 217746492U CN 202221415897 U CN202221415897 U CN 202221415897U CN 217746492 U CN217746492 U CN 217746492U
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Abstract
The utility model belongs to the technical field of waste incineration treatment, and relates to a slurry preparation and conveying system for deacidifying flue gas of a waste incinerator; comprises a lime powder bin, a slurry preparation tank, a slurry storage tank and an atomization device which are sequentially connected through a feeding pipeline; a bin top dust remover is arranged at the top of the lime powder bin; the slurry preparation tank and the slurry storage tank are internally provided with a stirrer; a flow regulating valve, a pressure gauge, a switch valve, a flowmeter and a filter are arranged on a rear-section feeding pipeline which connects the slurry storage tank with the atomizing device; the rear feeding pipeline is connected with the slurry storage tank through a return pipeline; the utility model discloses be applied to storage, preparation and the transport of domestic waste incinerator flue gas deacidification device deacidification agent, through the accurate regulation and strict the accuse to the use amount of deacidification agent and thick liquid, SO that can guarantee 2 HF and HCl removing rate, and deacidifying cost can be reduced.
Description
Technical Field
The utility model belongs to the technical field of msw incineration handles, a deacidification system of waste incinerator is related to, specifically is a thick liquid preparation conveying system for flue gas deacidification of waste incinerator. The deacidification agent is applied to storage, preparation and conveying of the deacidification agent of the flue gas deacidification device of the household garbage incinerator.
Background
Along with the gradual increase of the production of urban domestic garbage, the incineration is used as the most thorough harmless treatment, the most obvious volume reduction and the highest resource utilization degreeThe treatment technology becomes an important technology for domestic garbage treatment in the international society at present. However, each ton of garbage will generate 5000-7000 m after incineration 3 The control of the emission concentration of pollutants in flue gas is also receiving great attention. The domestic garbage contains a large amount of organic components, and HCl and HF are mainly generated by chloride in the garbage or chlorine-containing plastics, resin and other organic matters in the incineration process. The original HCl content in the flue gas is 600-1200 mg/m 3 The content of HF is 1 to 20 mg/m 3 ；SO x Mainly generated in the process of burning sulfur-containing compounds in the garbage, wherein SO is used as the raw material 2 Mainly, under the catalytic action of heavy metal, a small amount of SO is generated 3 Original SO in flue gas x The content is 200 to 800 mg/m 3 . In the whole flue gas purification process, aiming at the removal and control of acid gas, the current mainstream process is an SDA rotating spray semi-dry deacidification process.
The principle of the SDA rotary spraying semi-dry process is that calcium oxide (CaO) is used as a deacidification agent to prepare slurry, the slurry is conveyed into a deacidification tower through a pump, atomized into the deacidification tower by a high-speed rotary atomizer and atomized into tiny particles, and then the tiny particles are sprayed into the deacidification tower to be mixed with high-temperature flue gas and fully reacted. However, the discontinuous production and control of the slurry as the deacidification agent can cause the problems of large dust, easy precipitation and pipe blockage in the production and conveying processes and inaccurate preparation, SO 2 The removal rate of HF and HCl is reduced, and the production and transportation equipment of the deacidification agent slurry occupies large space, has high investment cost and high equipment maintenance cost.
SUMMERY OF THE UTILITY MODEL
The utility model overcomes prior art's is not enough, provides a thick liquid preparation conveying system for waste incinerator flue gas deacidification, solves above-mentioned problem.
In order to achieve the purpose, the utility model is realized by the following technical scheme.
A slurry preparation and conveying system for deacidification of flue gas of a waste incinerator comprises a lime powder bin, a slurry preparation tank, a slurry storage tank and an atomization device which are sequentially connected through a feeding pipeline; a bin top dust remover is arranged at the top of the lime powder bin; the slurry preparation tank and the slurry storage tank are internally provided with a stirrer; a flow regulating valve, a pressure gauge, a switch valve, a flowmeter and a filter are arranged on a rear-section feeding pipeline which is connected with the slurry storage tank and the atomization device; and the rear feeding pipeline is connected with the slurry storage tank through a return pipeline.
Further, a spiral discharging machine is arranged at an outlet at the bottom of the lime powder bin, and the spiral discharging machine is connected with the slurry preparation tank through a feeding pipeline.
Further, the slurry preparation tank is connected in parallel with two slurry storage tanks.
Furthermore, a lime slurry supply pump is arranged on an outlet pipeline of the slurry storage tank.
Furthermore, the lime powder bin and the slurry storage tank are both provided with a high-limit material level meter and a low-limit material level meter.
Further, the return line is provided with a flow regulating valve.
Furthermore, the rear feeding pipeline is connected with the atomizing device through a flexible connecting pipe.
Further, the filter is adjacent to the hose.
Further, the thick liquid preparation jar has the drain pit through the pipe connection, the drain pit is connected with the outer row of mouth of overflow of thick liquid preparation jar, thick liquid storage jar respectively through the pipeline.
Furthermore, a stirrer is arranged in the drainage pit.
The utility model discloses produced beneficial effect for prior art does:
the utility model provides a be applied to storage, preparation and conveying system of domestic waste incinerator flue gas deacidification device deacidification agent, through the accurate regulation and strict the accuse to the use amount of deacidification agent and thick liquid, SO that can guarantee 2 HF and HCl removal rate, and deacidification cost can be reduced; the utility model discloses having arranged accurate instrument and automatic valve on the thick liquid pipeline, can adapt to different load operating modes, reply different waste incinerator's different operating condition, make timely appropriate treatment, avoid deacidifying agentWaste and substandard pollutant treatment, and stable operation of the garbage incinerator is guaranteed.
The utility model can effectively reduce the dust pollution of the slurry in the production and transportation processes, simultaneously improve the utilization rate of the slurry, and has the advantages of low equipment complexity, light weight, greatly reduced investment cost, intelligent control, less user and low operation cost;
the system has small volume and strong space adaptability; is beneficial to the step-by-step reaching of the standard discharge; the system is a storage, preparation and conveying system of the deacidification agent of the flue gas deacidification device, which is economical, practical and reliable in process, is suitable for the national conditions of China and realizes energy conservation.
Drawings
FIG. 1 is a schematic connection diagram of a slurry preparation and delivery system for deacidification of flue gas from a waste incinerator according to the present invention;
in the figure, 1-a bin top dust remover, 2-a lime powder bin, 3-a spiral discharging machine, 4-a stirrer, 5-a slurry preparation tank, 6-a transfer slurry pump, 7-a slurry storage tank, 8-a lime slurry supply pump, 9-a flow regulating valve, 10-a pressure gauge, 11-a switch valve, 12-a flow meter, 13-a filter, 14-a flexible connecting pipe, 15-a high-speed rotary atomizer, 16-a pit discharging pump, 17-a drainage pit, 18-a rear section feeding pipeline and 19-a return pipeline.
Detailed Description
In order to make the technical problem, technical scheme and beneficial effect that the utility model will solve clearer and more obvious, combine embodiment and attached drawing, it is right to go on further detailed description the utility model discloses. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The technical solution of the present invention is described in detail below with reference to the embodiments and the drawings, but the scope of protection is not limited thereto.
The system is applied to storage, preparation and conveying of the deacidification agent of the flue gas deacidification device of the household garbage incinerator. The deacidification device uses calcium oxide (CaO) and slaked lime (Ca (OH) 2 ) As the deacidification agent, calcium oxide (CaO) and slaked lime (Ca (OH) 2 ) Conveying compressed air by tank car under dry powder stateAnd the powder is conveyed to a lime slaking bin, a bin top dust remover is arranged at the top of the lime bin, and the dust of the powder is collected during powdering to prevent environmental pollution. In operation, calcium oxide (CaO) or slaked lime (Ca (OH) 2 ) Conveying to a slurry preparation tank by a screw feeder, adding water, stirring by a stirrer to prepare Ca (OH) 2 Solution carries the thick liquid storage tank in through the transfer thick liquid pump, and thick liquid storage tank sets up to 2, switches the use in turn, prevents to break down influence production, burns burning furnace flue gas deacidification device normal start operation back when domestic waste, carries the thick liquid in the thick liquid storage tank to high-speed rotatory atomizer through lime thick liquid pump is stable in succession, guarantees the deacidification effect.
The system comprises a bin top dust remover 1, a lime powder bin 2, a spiral discharging machine 3, a stirrer 4, a slurry preparation tank 5, a transfer slurry pump 6, a slurry storage tank 7, a lime slurry supply pump 8, a flow regulating valve 9, a pressure gauge 10, a switch valve 11, a flowmeter 12, a filter 13, a flexible connecting pipe 14 and a high-speed rotary atomizer 15.
The lime powder bin 2, the slurry preparation tank 5, the slurry storage tank 7 and the high-speed rotary atomizer 15 are sequentially connected through a feeding pipeline; the lime powder bin 2 and the slurry storage tank 7 are both provided with a high and low limit level meter. A spiral discharging machine 3 is arranged at an outlet at the bottom of the lime powder bin 2, and a bin top dust remover 1 is arranged at the top of the lime powder bin 2; the slurry preparation tank 5 is connected in parallel with two slurry storage tanks 7. The slurry preparation tank 5 and the slurry storage tank 7 are both provided with a stirrer 4; the outlet pipe of the slurry storage tank 7 is provided with a lime slurry feed pump 8. A rear-section feeding pipeline 18 connected with the slurry storage tank 7 and the high-speed rotary atomizer 15 is provided with a flow regulating valve 9, a pressure gauge 10, a switch valve 11, a flowmeter 12 and a filter 13; the rear feed line 18 is connected to the high-speed rotary atomizer 15 via a flexible connection tube 14. The latter feed line 18 is connected to the slurry storage tank 7 through a return line 19. The return line 19 is provided with a flow regulating valve 9.
The slurry preparation tank 5 is connected with a drainage pit 17 through a pipeline, and the drainage pit 17 is respectively connected with the overflow outer discharge ports of the slurry preparation tank 5 and the slurry storage tank 7 through pipelines. A stirrer 4 is arranged in the drainage pit 17.
The specific working process is as follows: the method comprises the steps of firstly starting a bin top dust remover 1, collecting and filtering dust in a lime powder bin 2, enabling the collected dust to fall into the bin under the action of gravity, simultaneously starting a self-carried compressed air pump of a lime tank truck to convey deacidification agents into the lime powder bin 2, accumulating the deacidification agents in the bin under the action of gravity, arranging a high-limit material level meter and a low-limit material level meter on the outer wall of the lime powder bin 2, stopping the self-carried compressed air pump of the lime tank truck when the material level reaches a high material level, stopping powder beating, stopping the bin top dust remover 1, and performing cyclic operation according to the steps when the material level reaches a low material level.
When preparing the thick liquid, start 3 spiral discharging machines in 2 lime powder storehouse bottoms of earlier start-up, open the exit valve simultaneously, carry deacidification agent to thick liquid preparation jar 5, prepare into the thick liquid of 10% concentration under the 4 disturbances of agitator after adding water, it stores to thick liquid storage jar 7 internal storage to transship through transship thick liquid pump 6, the jar outer wall is provided with the height, low charge level indicator, jar inside is provided with agitator 4, continue the stirring, prevent that the thick liquid from forming the sediment, thick liquid storage jar 7 is provided with two altogether, but simultaneous independent use, prevent to influence the production and need the thick liquid because of thick liquid storage jar 7 equipment breaks down after.
When the high-speed rotary atomizer 15 is put into use, the lime slurry supply pump 8 and the inlet and outlet valves thereof are started, and slurry with the concentration of 10% is conveyed to the feeding port of the high-speed rotary atomizer 15 for atomization and deacidification. A flow regulating valve 9, a pressure gauge 10, a switch valve 11, a flowmeter 12, a filter 13 and a flexible connecting pipe 14 are arranged on a pump outlet pipeline, and the pipeline is connected with a high-speed rotary atomizer 15 through the flexible connecting pipe 14, so that the equipment vibration is effectively prevented, and the instrument precision is influenced; after the slurry entering the 15 high-speed rotary atomizer passes through the filter 13, filtering fine particle impurities in the slurry to prevent blockage; finally according to SO at the outlet of the deacidification tower 2 And the HF and HCl removal rate, the slurry amount and pressure entering the high-speed rotary atomizer 15 are regulated by regulating the flow regulating valve 9, observing the data of the pressure gauge 10 and the flow meter 12, ensuring the qualified stability of environmental protection data and avoiding slurry waste; when the pipeline system needs to be stopped or overhauled, the switch valve 11 is closed to ensure safety. The system is provided with a return pipeline 19 to prevent the regulated pipeline from being suppressed,causing damage to the equipment. After the normal use amount is ensured, the redundant slurry flows back to the slurry storage tank 7, and the method is very economical and practical.
All case jar thick liquids overflow of this system, arrange outward and each equipment cooling water all flow to the drain pit 17 in through the drain channel automatically, the hole top is provided with the level gauge, when the liquid level reached liquid level height, starts pit discharge pump 16 and sends back the liquid of collecting and use 5 inner loop of thick liquid preparation jar, prevents thick liquid and water waste.
The above description is for further details of the present invention with reference to specific preferred embodiments, and it should not be understood that the embodiments of the present invention are limited thereto, and it will be apparent to those skilled in the art that the present invention can be implemented in a plurality of simple deductions or substitutions without departing from the scope of the present invention, and all such alterations and substitutions should be considered as belonging to the present invention, which is defined by the appended claims.
Claims (10)
1. A slurry preparation and conveying system for deacidification of flue gas of a waste incinerator is characterized by comprising a lime powder bin (2), a slurry preparation tank (5), a slurry storage tank (7) and an atomization device which are sequentially connected through a feeding pipeline; a bin top dust remover (1) is arranged at the top of the lime powder bin (2); the slurry preparation tank (5) and the slurry storage tank (7) are internally provided with stirrers (4); a rear-section feeding pipeline (18) connected with the slurry storage tank (7) and the atomization device is provided with a flow regulating valve (9), a pressure gauge (10), a switch valve (11), a flowmeter (12) and a filter (13); the rear feeding pipeline is connected with the slurry storage tank (7) through a return pipeline (19).
2. The slurry preparation and conveying system for deacidification of flue gas of a waste incinerator according to claim 1, characterized in that a screw discharging machine (3) is arranged at the bottom outlet of the lime powder bin (2), and the screw discharging machine (3) is connected with the slurry preparation tank (5) through a feeding pipeline.
3. A slurry preparation and delivery system for deacidification of flue gas from waste incineration furnaces as in claim 1, characterised in that said slurry preparation tank (5) is connected in parallel with two slurry storage tanks (7).
4. A slurry preparation and transport system for deacidification of flue gases of waste incinerators, according to claim 1 or 3, characterised in that the outlet line of the slurry storage tank (7) is provided with a lime slurry feed pump (8).
5. A slurry preparation and delivery system for deacidification of flue gas from garbage incinerator according to claim 1, characterized in that said lime powder bin (2) and slurry storage tank (7) are provided with high and low limit level gauges.
6. A slurry preparation and delivery system for deacidification of flue gas from waste incineration furnaces as in claim 1, characterised in that said return line (19) is provided with a flow regulating valve (9).
7. The slurry preparation and delivery system for deacidification of flue gas from garbage incinerator according to claim 1, wherein the back feed line (18) is connected to the atomizing device through flexible connecting pipe (14).
8. A slurry preparation and delivery system for deacidification of flue gas from waste incineration furnaces as in claim 7, characterised by that said filter (13) is adjacent to the flexible connection pipe (14).
9. The slurry preparation and conveying system for deacidification of flue gas of a garbage incinerator according to claim 1, wherein the slurry preparation tank (5) is connected with a drainage pit (17) through a pipeline, and the drainage pit (17) is respectively connected with an overflow external discharge port of the slurry preparation tank (5) and an overflow external discharge port of the slurry storage tank (7) through pipelines.
10. A slurry preparation and delivery system for deacidification of flue gas from garbage incinerator according to claim 9, characterized by that in said drainage pit (17) is placed a stirrer (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221415897.0U CN217746492U (en) | 2022-06-08 | 2022-06-08 | Slurry preparation and conveying system for flue gas deacidification of waste incinerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221415897.0U CN217746492U (en) | 2022-06-08 | 2022-06-08 | Slurry preparation and conveying system for flue gas deacidification of waste incinerator |
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| CN217746492U true CN217746492U (en) | 2022-11-08 |
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| CN202221415897.0U Active CN217746492U (en) | 2022-06-08 | 2022-06-08 | Slurry preparation and conveying system for flue gas deacidification of waste incinerator |
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- 2022-06-08 CN CN202221415897.0U patent/CN217746492U/en active Active
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