CN216662664U - Comprehensive utilization and treatment device for sodium bicarbonate desulfurization by-products and soda ash plant waste liquid - Google Patents
Comprehensive utilization and treatment device for sodium bicarbonate desulfurization by-products and soda ash plant waste liquid Download PDFInfo
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- CN216662664U CN216662664U CN202122506039.9U CN202122506039U CN216662664U CN 216662664 U CN216662664 U CN 216662664U CN 202122506039 U CN202122506039 U CN 202122506039U CN 216662664 U CN216662664 U CN 216662664U
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Abstract
The utility model relates to the technical field of soda production, in particular to a comprehensive utilization and treatment device for sodium bicarbonate desulfurization byproducts and waste liquor of a soda plant. By adopting the treatment device, the comprehensive treatment of the desulfurization by-products and the waste liquid of the soda production is realized, the pollution to the environment is reduced, the resource waste is avoided, and the benefit is increased for enterprises.
Description
Technical Field
The utility model relates to the technical field of soda ash production, in particular to a comprehensive utilization and treatment device for sodium bicarbonate desulfurization byproducts and soda ash plant waste liquid.
Background
The treatment of industrial flue gas mainly comprises two processes of wet desulphurization and dry desulphurization. The wet desulphurization process represented by calcium desulphurization is long in implementation time, and is mainly applied to the field with high sulfur content in tail gas such as thermoelectricity at present. In recent years, sodium-based dry desulphurization (SDS) using baking soda as an absorbent is distinguished from a plurality of dry desulphurization processes by virtue of unique advantages, and is increasingly widely applied to industries (such as glass, steel and the like) with relatively low tail gas sulfur content. With the popularization of baking soda in the desulfurization industry, the byproduct yield of baking soda desulfurization is gradually increased. The main treatment modes of the desulfurization byproducts of the baking soda at present are as follows: some glass enterprises can recycle cleaner glass for producing colored glass; most of desulfurization byproducts (such as steel and iron and coking industries) are grey black and have high impurity content, and most of the desulfurization byproducts can be used for producing individual-grade cement and can be stored as solid wastes in a stockpiling mode, so that resources are wasted, and the occupied site is easy to cause secondary pollution.
At present, a large amount of waste liquid is generated in the process of producing the calcined soda by adopting an ammonia-soda process, the discharge amount of the waste liquid is influenced by the production process, and about 9m of the waste liquid is discharged every 1t of the calcined soda is basically produced3The disposal of waste liquid is always a worldwide problem and is also one of the bottlenecks limiting the development of ammonia-soda enterprises. Therefore how to establish a set of desulfurization byproducts toAnd a waste liquid comprehensive treatment device are the key points of research of the utility model.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: aiming at the defects of the prior art, the utility model provides a comprehensive treatment device for sodium bicarbonate desulphurization by-products and soda ash plant waste liquid, which can recycle the desulphurization by-products and the waste liquid and reduce the pollution to the environment.
In order to solve the technical problems, the technical scheme of the utility model is as follows:
a comprehensive utilization and treatment device for sodium bicarbonate desulfurization byproducts and soda plant waste liquid comprises a first reaction kettle, the top of the first reaction kettle is provided with a first feed inlet, a second feed inlet and a third feed inlet, the discharge outlet of the first reaction kettle is communicated with a first filtering device, the liquid outlet of the first filtering device is communicated with the cache tank, the discharge port of the cache tank is communicated with the first feeding pipe of the second reaction kettle, a second feeding pipe of the second reaction kettle is communicated with a waste liquid storage tank, a discharge hole of the second reaction kettle is communicated with second filtering equipment, the discharge hole of the second filtering device is communicated with a dihydrate gypsum storage tank, the liquid outlet of the second filtering device is respectively communicated with a first vacuum liquid collecting tank and a second vacuum liquid collecting tank, an outlet of the first vacuum liquid collecting tank is communicated with a filtrate collecting tank, and an outlet of the second vacuum liquid collecting tank is communicated with a washing liquid collecting tank.
As an improved technical scheme, a first feed inlet of the first reaction kettle is communicated with a desulfurization byproduct material bin, a second feed inlet is communicated with a sulfuric acid storage tank, and a third feed inlet is communicated with a tap water storage tank.
As an improved technical scheme, the first reaction kettle comprises a kettle body, wherein a jacket is arranged on the outer wall of the kettle body, a stirring shaft is arranged inside the kettle body, one end of the stirring shaft is connected with a motor, a fan-shaped stirring blade is arranged at the upper part of the stirring shaft, and a plurality of through holes are formed in the stirring blade; and a U-shaped stirring frame is arranged at the lower part of the stirring shaft.
As an improved technical scheme, the first filtering device is an organic membrane filter; the second filtering device is a belt filter.
As an improved technical scheme, the second reaction kettle comprises a kettle body, a jacket is arranged on the outer wall of the kettle body, a rotating shaft is arranged inside the kettle body, a motor is connected to one end of the rotating shaft, a stirring frame is arranged on the rotating shaft, the stirring frame is trapezoidal in shape, and a plurality of stirring rods are alternately arranged on the frame of the stirring frame.
As an improved technical scheme, the washing liquid collecting tank is communicated with the running water storage tank through a delivery pump.
As an improved technical scheme, the outlet of the filtrate collecting tank is communicated with a salt dissolving water storage tank through a conveying pipeline.
As an improved technical scheme, delivery pumps are respectively arranged on a pipeline for communicating the sulfuric acid storage tank with the first reaction kettle, a pipeline for communicating a discharge port of the first reaction kettle with the first filtering device, a pipeline for communicating the buffer tank with the second reaction kettle and a pipeline for communicating the washing liquid collecting tank with the tap water storage tank.
After the technical scheme is adopted, the utility model has the beneficial effects that:
because baking soda desulfurization accessory substance and soda plant waste liquid comprehensive utilization processing apparatus, including first reation kettle, first reation kettle's top is equipped with first feed inlet, second feed inlet and third feed inlet, first reation kettle's discharge gate intercommunication first filtration equipment, first filtration equipment's liquid outlet intercommunication buffer tank, the discharge gate of buffer tank communicates the first inlet pipe of second reation kettle, second reation kettle's second inlet pipe intercommunication waste liquid storage tank, second reation kettle's discharge gate intercommunication second filtration equipment, second filtration equipment's discharge gate intercommunication dihydrate gypsum storage tank, second filtration equipment's liquid outlet communicates first vacuum collecting tank and second vacuum collecting tank respectively, the export of first vacuum collecting tank communicates the filtrating collecting vat, the export of second vacuum collecting tank communicates the lotion collecting vat. Tap water and sulfuric acid respectively enter the first reaction kettle through the third feed port and the second feed port in actual production, a desulfurization byproduct is added from the first feed port after stirring and mixing, feed liquid after stirring, mixing and reacting for a period of time enters the first filtering device from the discharge port, filtrate after being filtered and treated by the first filtering device enters the buffer tank for buffering, the filtrate in the buffer tank enters the second reaction kettle from the first feed pipe, waste liquid in the waste liquid storage tank is added from the second feed pipe, the feed liquid after stirring, mixing and fully reacting enters the second filtering device for treatment, the filtrate enters the first vacuum liquid collection tank, is separated and then enters the filtrate tank along a pipeline, filter cakes in the second filtering device are continuously washed by clear water, and collected washing liquid enters the second vacuum liquid collection tank and then flows into the washing liquid tank. By adopting the treatment device, the comprehensive treatment of the desulfurization by-products and the waste liquid of the soda production is realized, the pollution to the environment is reduced, the resource waste is avoided, and the benefit is increased for enterprises.
The first reaction kettle comprises a kettle body, a jacket is arranged on the outer wall of the kettle body, a stirring shaft is arranged inside the kettle body, one end of the stirring shaft is connected with a motor, a fan-shaped stirring blade is arranged at the upper part of the stirring shaft, and a plurality of through holes are formed in the stirring blade; the lower part of the stirring shaft is provided with a U-shaped stirring frame. Inside desulfurization accessory substance, sulphuric acid and running water got into the cauldron body, the heat medium got into to press from both sides the cover inside to heat the inside feed liquid of cauldron body, and the motor drives (mixing) shaft and fan-shaped stirring paddle leaf and U-shaped stirring frame and stirs the mixture. The reaction kettle with the structure has reasonable design, realizes stirring mixing and heating of feed liquid, and promotes sufficient contact and sufficient reaction of reaction raw materials.
Because the second reation kettle includes the cauldron body, is equipped with on the outer wall of the cauldron body and presss from both sides the cover, and the inside of the cauldron body is equipped with the pivot, and the one end of pivot even has the motor, is equipped with the stirring frame in the pivot, and the shape of stirring frame is equipped with a plurality of stirring rods on the frame of trapezoidal stirring frame. Inside soda manufacturing plant waste liquid and feed liquid got into the second reation kettle, the heat medium got into to press from both sides the cover inside to heat the inside feed liquid of cauldron body, and the motor drives pivot and agitator frame and stirs the mixture to the inside feed liquid of cauldron body. By adopting the reaction kettle with the structure, the stirring, mixing and heating of the reaction liquid are realized, and the reaction liquid is promoted to fully react.
The washing liquid collecting tank is communicated with the running water storage tank through the delivery pump. By adopting the design, the washing liquid is recycled, and the waste of water resources is avoided.
The outlet of the filtrate collecting tank is communicated with the salt dissolving water storage tank through a conveying pipeline. The recycling of the filtrate can effectively reduce the consumption of the raw salt produced by the sodium carbonate, and the filtrate also contains lower content of calcium and magnesium ions, so that the use amount of lime milk and the sodium carbonate in the process of refining the brine can be effectively reduced when the filtrate is used for producing the salt by the sodium carbonate, and the production cost of the sodium carbonate is reduced.
Drawings
FIG. 1 is a schematic structural diagram of a comprehensive utilization and treatment device for sodium bicarbonate desulfurization byproducts and soda plant waste liquid according to the present invention;
the system comprises a first reaction kettle 1, a desulfurization byproduct material bin 2, a sulfuric acid storage tank 3, a tap water storage tank 4, a first filtering device 5, a buffer tank 6, a second reaction kettle 7, a waste liquid storage tank 8, a second filtering device 9, a dihydrate gypsum storage tank 10, a first vacuum liquid collection tank 11, a second vacuum liquid collection tank 12, a filtrate collection tank 13, a salt dissolving water storage tank 14, a washing liquid collection tank 15, a conveying pump 16 and a vacuum pump 17.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
A comprehensive utilization and treatment device for sodium bicarbonate desulfurization byproducts and soda plant waste liquid comprises a first reaction kettle 1, wherein the top of the first reaction kettle 1 is provided with a first feed inlet, a second feed inlet and a third feed inlet, the first feed inlet is communicated with a desulfurization byproduct material bin 2, the second feed inlet is communicated with a sulfuric acid storage tank 3, the third feed inlet is communicated with a tap water storage tank 4, the discharge outlet of the first reaction kettle 1 is communicated with a first filtering device 5 (an organic membrane filter, purchased from the manufacturer), the liquid outlet of the first filtering device 5 is communicated with a buffer tank 6, the discharge outlet of the buffer tank 6 is communicated with a first feed pipe of a second reaction kettle 7, the second feed pipe of the second reaction kettle 7 is communicated with a waste liquid storage tank 8, the discharge outlet of the second reaction kettle 7 is communicated with a second filtering device 9 (a belt filter, purchased from the manufacturer), the discharge outlet of the second filtering device 9 is communicated with a dihydrate gypsum storage tank 10, the liquid outlet of the second filtering device 9 is respectively communicated with a first vacuum liquid collecting tank 11 and a second vacuum liquid collecting tank 12 (the first vacuum liquid collecting tank and the second vacuum liquid collecting tank are respectively connected with a vacuum pump 17), the outlet of the first vacuum liquid collecting tank 11 is communicated with a filtrate collecting tank 13, and the outlet of the filtrate collecting tank 13 is communicated with a salt dissolving water storage tank 14 through a conveying pipeline; the outlet of the second vacuum liquid collecting tank 12 is communicated with a washing liquid collecting tank 15, and the washing liquid collecting tank 15 is communicated with the tap water storage tank 4 through a delivery pump 16.
In actual production, tap water and sulfuric acid respectively enter the first reaction kettle through a third feed inlet and a second feed inlet, a desulfurization byproduct is added from the first feed inlet through a screw conveyor after stirring and mixing, feed liquid after stirring, mixing and reacting for a period of time enters first filtering equipment from a discharge outlet, filtrate after being filtered and treated by the first filtering equipment enters a cache tank for caching, the filtrate in the cache tank enters the second reaction kettle from a first feed pipe, waste liquid in a waste liquid storage tank is added from a second feed pipe, the feed liquid after stirring, mixing and fully reacting enters second filtering equipment for treatment, the filtrate enters a first vacuum liquid collection tank, is separated and then enters a filtrate tank along a pipeline, and then enters a salt dissolving water storage tank through a delivery pump; and the filter cake in the second filtering device is continuously washed by clear water, the collected washing liquid enters the second vacuum liquid collecting tank, and then flows into the washing liquid collecting tank and is communicated with the tap water storage tank through the delivery pump. By adopting the treatment device, the comprehensive treatment of the desulfurization by-products and the waste liquid of the soda plant is realized, the pollution to the environment is reduced, the resource waste is avoided, and the benefit is increased for enterprises. The collected washing liquid is reused, so that waste of water resources is avoided, the filtrate in the filtrate collecting tank can be recycled, the consumption of raw salt in the production of the calcined soda can be effectively reduced, and meanwhile, the filtrate also contains lower content of calcium and magnesium ions, so that the use amount of lime milk and the calcined soda in the process of refining brine can be effectively reduced when the filtrate is used for producing the salt from the calcined soda, and the production cost of the calcined soda is reduced.
The first reaction kettle 1 comprises a kettle body, a jacket is arranged on the outer wall of the kettle body, a stirring shaft is arranged inside the kettle body, one end of the stirring shaft is connected with a motor, a fan-shaped stirring blade is arranged at the upper part of the stirring shaft, and a plurality of through holes are formed in the stirring blade; the lower part of the stirring shaft is provided with a U-shaped stirring frame. Inside desulfurization accessory substance, sulphuric acid and running water got into the cauldron body, the heat medium got into to press from both sides the cover inside to heat the inside feed liquid of cauldron body, and the motor drives (mixing) shaft and fan-shaped stirring paddle leaf and U-shaped stirring frame and stirs the mixture. The reaction kettle with the structure has reasonable design, realizes stirring mixing and heating of feed liquid, and promotes sufficient contact and sufficient reaction of reaction raw materials.
Wherein second reation kettle 7 includes the cauldron body, is equipped with on the outer wall of the cauldron body and presss from both sides the cover, and the inside of the cauldron body is equipped with the pivot, and the one end of pivot even has the motor, is equipped with the stirring frame in the pivot, and the shape of stirring frame is equipped with a plurality of stirring rods on the frame of trapezoidal stirring frame. Inside soda manufacturing plant waste liquid and feed liquid got into the second reation kettle, the heat medium got into to press from both sides the cover inside to heat the inside feed liquid of cauldron body, and the motor drives pivot and agitator frame and stirs the mixture to the inside feed liquid of cauldron body. By adopting the reaction kettle with the structure, the stirring, mixing and heating of the reaction liquid are realized, and the reaction liquid is promoted to fully react.
Wherein, a pipeline which is communicated with the first reaction kettle 1 and the sulfuric acid storage tank 2, a pipeline which is communicated with the first filtering device 5 and the discharge port of the first reaction kettle 1, a pipeline which is communicated with the buffer tank 6 and the second reaction kettle 7 and a pipeline which is communicated with the tap water storage tank 4 and the washing liquid collecting tank 15 are respectively provided with a delivery pump 16.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. The utility model provides a sodium bicarbonate desulfurization accessory substance and soda plant waste liquid comprehensive utilization processing apparatus which characterized in that: including first reation kettle, first reation kettle's top is equipped with first feed inlet, second feed inlet and third feed inlet, the first filtration equipment of first reation kettle's discharge gate intercommunication, the liquid outlet intercommunication buffer tank of first filtration equipment, the discharge gate intercommunication second reation kettle's of buffer tank first inlet pipe, second reation kettle's second inlet pipe intercommunication waste liquid storage tank, second reation kettle's discharge gate intercommunication second filtration equipment, the discharge gate intercommunication diaqua storage tank of second filtration equipment, the liquid outlet of second filtration equipment communicates first vacuum collecting tank and second vacuum collecting tank respectively, the export intercommunication filtrating vat of first vacuum collecting tank, the export intercommunication lotion collecting vat of second vacuum collecting tank.
2. The comprehensive utilization and treatment device for the desulfurization byproducts of sodium bicarbonate and the waste liquid of soda plants according to claim 1, is characterized in that: the first feed inlet of the first reaction kettle is communicated with a desulfurization byproduct material bin, the second feed inlet is communicated with a sulfuric acid storage tank, and the third feed inlet is communicated with a tap water storage tank.
3. The comprehensive utilization and treatment device for the desulfurization byproducts of sodium bicarbonate and the waste liquid of soda plants according to claim 1, is characterized in that: the first reaction kettle comprises a kettle body, a jacket is arranged on the outer wall of the kettle body, a stirring shaft is arranged inside the kettle body, one end of the stirring shaft is connected with a motor, a fan-shaped stirring paddle blade is arranged at the upper part of the stirring shaft, and a plurality of through holes are formed in the stirring paddle blade; and a U-shaped stirring frame is arranged at the lower part of the stirring shaft.
4. The comprehensive utilization and treatment device for the desulfurization byproducts of sodium bicarbonate and the waste liquid of soda plants according to claim 1, is characterized in that: the first filtering device is an organic membrane filter; the second filtering device is a belt filter.
5. The comprehensive utilization and treatment device for the desulfurization byproducts of sodium bicarbonate and the waste liquid of soda plants according to claim 1, is characterized in that: the second reaction kettle comprises a kettle body, a jacket is arranged on the outer wall of the kettle body, a rotating shaft is arranged inside the kettle body, a motor is connected to one end of the rotating shaft, a stirring frame is arranged on the rotating shaft, the stirring frame is trapezoidal in shape, and a plurality of stirring rods are alternately arranged on the frame of the stirring frame.
6. The comprehensive utilization and treatment device for the desulfurization by-products of sodium bicarbonate and the waste liquid of soda ash plant according to claim 2, is characterized in that: and the washing liquid collecting tank is communicated with the tap water storage tank through a delivery pump.
7. The comprehensive utilization and treatment device for the desulfurization byproducts of sodium bicarbonate and the waste liquid of soda plants according to claim 1, is characterized in that: and the outlet of the filtrate collecting tank is communicated with a salt dissolving water storage tank through a conveying pipeline.
8. The comprehensive utilization and treatment device for the desulfurization by-products of sodium bicarbonate and the waste liquid of soda ash plant according to claim 2, is characterized in that: and conveying pumps are respectively arranged on a pipeline communicated with the first reaction kettle, a pipeline communicated with the first filtering device at the discharge port of the first reaction kettle, a pipeline communicated with the second reaction kettle and a pipeline communicated with the tap water storage tank at the washing liquid collecting tank.
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| CN202122506039.9U CN216662664U (en) | 2021-10-18 | 2021-10-18 | Comprehensive utilization and treatment device for sodium bicarbonate desulfurization by-products and soda ash plant waste liquid |
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| CN202122506039.9U CN216662664U (en) | 2021-10-18 | 2021-10-18 | Comprehensive utilization and treatment device for sodium bicarbonate desulfurization by-products and soda ash plant waste liquid |
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