CN108203189B - White water purification treatment recycling system for paper-making reconstituted tobacco - Google Patents
White water purification treatment recycling system for paper-making reconstituted tobacco Download PDFInfo
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- CN108203189B CN108203189B CN201810062268.6A CN201810062268A CN108203189B CN 108203189 B CN108203189 B CN 108203189B CN 201810062268 A CN201810062268 A CN 201810062268A CN 108203189 B CN108203189 B CN 108203189B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/302—Treatment of water, waste water, or sewage by irradiation with microwaves
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B3/00—Preparing tobacco in the factory
- A24B3/14—Forming reconstituted tobacco products, e.g. wrapper materials, sheets, imitation leaves, rods, cakes; Forms of such products
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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Abstract
A novel white water purifying treatment recycling system for paper-making reconstituted tobacco comprises a white water collecting pulp tank, a centrifugal pump, a microwave sterilizing device, a buffer tank and a settling separation tank which are sequentially connected through a pipeline, wherein the white water collecting pulp tank consists of an upper end cover, a cylinder body and a lower bottom plate; the white water collecting slurry tank is internally provided with a horizontal stirrer, the cache tank is internally provided with a vertical stirrer and a second liquid level meter, the sedimentation separation tank is internally provided with a vertical stirring mechanism and a third liquid level meter and consists of an upper end enclosure, a lower end enclosure and a barrel body, the left end of the upper end enclosure of the sedimentation separation tank is provided with a liquid inlet, and the right upper end of the barrel body of the sedimentation separation tank is provided with a liquid outlet. The method enables the white water generated in the production process of the paper-making reconstituted tobacco to be purified and recycled, and simultaneously solves the problems of microorganism enrichment, decay and the like in the circular treatment process of the white water.
Description
Technical Field
The invention belongs to the technical field of reconstituted tobacco production, and particularly relates to a novel papermaking-method reconstituted tobacco white water purification treatment recycling system.
Background
The paper-making method reconstituted tobacco is to utilize raw materials such as tobacco stems, tobacco powder and the like to prepare sheets with characters close to or even superior to those of natural tobacco leaves, the tobacco raw materials are firstly extracted by water, and then dried materials are prepared into slurry to form a sheet base through paper making; the extracting solution is purified, concentrated and flavored to form a coating liquid which is reversely coated on the film base to form a finished reconstituted tobacco product.
A large amount of white water is generated in the screen part forming and squeezing section of the paper-making reconstituted tobacco sheet, and the white water is directly discharged in the traditional production process, so that the sewage treatment load is greatly increased. In recent years, a closed white water circulation technology is adopted in reconstituted tobacco production, but white water contains organic matters such as sugar, nicotine and organic acid, nitrogen-containing compounds, fine fibers, fillers and other substances, and substances such as preservatives and other substances causing increased safety risks of tobacco products are out of the permitted use range due to the requirements of China tobacco general company enterprise standards YQ 44.1-2014 on permitted substances of reconstituted tobacco. On one hand, along with closed recycling of white water, a large number of microorganisms are enriched and propagated in the whole reconstituted tobacco production system, so that serious adverse effects are brought to system safety, sanitation and product quality, the white water is discharged to a sewage treatment process after short-term recycling, and resources are not effectively, fully and maximally applied; on the other hand, suspended matters and macromolecular substances in the white water need to be removed by adopting separation modes such as centrifugal separation, mechanical filtration and the like, so that the production energy consumption is greatly increased.
Disclosure of Invention
The invention provides a novel papermaking-method reconstituted tobacco white water purification treatment recycling system for overcoming the defects in the prior art. The process has the advantages of low investment, simple and convenient operation and low energy consumption, realizes the on-line sterilization of the white water of the paper-making reconstituted tobacco, and simultaneously enables the white water to be purified and reused as the water for washing the low-pressure net part and the blanket.
Based on the purpose, the invention adopts the following technical scheme:
a novel white water purifying treatment recycling system for reconstituted tobacco by a papermaking method comprises a white water collecting slurry tank, a centrifugal pump, a microwave sterilizing device, a buffer tank and a settling separation tank which are sequentially connected through a pipeline, wherein the white water collecting slurry tank consists of an upper end cover, a cylinder body and a lower bottom plate, the upper end cover and the lower bottom plate are respectively arranged at the top and the bottom of the cylinder body, a white water inlet is formed in the middle of the upper end cover of the white water collecting slurry tank, a white water outlet is formed in the bottom of the cylinder body of the white water collecting slurry tank, and a first liquid level meter is arranged above the white water outlet; the white water collecting slurry tank is internally provided with a horizontal stirrer, the cache tank is internally provided with a vertical stirrer and a second liquid level meter, the sedimentation separation tank is internally provided with a vertical stirring mechanism and a third liquid level meter and consists of an upper end enclosure, a lower end enclosure and a barrel body, the left end of the upper end enclosure of the sedimentation separation tank is provided with a liquid inlet, and the right upper end of the barrel body of the sedimentation separation tank is provided with a liquid outlet.
Furthermore, a regulating valve and a flowmeter are sequentially arranged on a pipeline between the centrifugal pump and the microwave sterilization device and close to the outlet of the centrifugal pump, so that the flow of white water at the outlet of the centrifugal pump can be accurately controlled.
Furthermore, an auxiliary agent adding point is arranged on a pipeline at the inlet of the buffer tank, and the adding amount of the auxiliary agent is 1-3 per mill of the mass of the white water.
Furthermore, the inner wall of the upper end enclosure between the liquid inlet of the sedimentation separation tank and the vertical stirring mechanism is sequentially provided with a long baffle and an automatic spraying device, and the inner wall of the upper end enclosure on the right side of the vertical stirring mechanism of the sedimentation separation tank is vertically provided with a short baffle.
Further, vertical rabbling mechanism includes the (mixing) shaft, and the top of (mixing) shaft stretches out outside the sedimentation separation jar and the top of (mixing) shaft even has inverter motor, and the lower extreme of (mixing) shaft is equipped with the scraper blade, there is the interval between the lower head of scraper blade and sedimentation separation jar.
Furthermore, the first liquid level meter, the second liquid level meter, the third liquid level meter, the regulating valve and the flow meter are all connected into the DCS control system.
Further, the regulating valve and the flow meter adopt PID interlocking control.
Further, the upper surface of the lower bottom plate of the white water collecting pulp tank is an inclined surface, and the lowest point of the inclined surface is close to the white water outlet.
Further, the lowest point of the bottom of the cache tank is provided with a first sewage draining port, the first sewage draining port is connected with a sewage draining pipeline, and a first switch valve is arranged on the sewage draining pipeline.
Furthermore, a second sewage draining outlet is formed in the lowest point of the lower end enclosure of the sedimentation separation tank and connected with a sewage draining pipeline, and a second switch valve is arranged on the sewage draining pipeline.
The microwave sterilization device, the horizontal stirrer and the vertical stirrer are all the existing stirring devices, the horizontal stirrer comprises a stirring shaft horizontally fixed on the side wall of the white water collecting slurry tank, the stirring shaft is positioned above a white water outlet, the right end of the stirring shaft extends out of the white water collecting slurry tank, the end part of the stirring shaft is connected with a motor, and the left end of the stirring shaft is connected with a stirring paddle; the vertical stirrer comprises a vertical stirring shaft fixed at the middle part of the top end of the cache tank, the upper end of the stirring shaft extends out of the cache tank, the upper end part of the stirring shaft is connected with a motor, and the lower end of the stirring shaft is connected with a stirring paddle. Wherein, the upper end part of the stirring shaft of the vertical stirrer of the sedimentation separation tank is connected with a variable frequency motor.
The invention adopts a white water purification treatment mode combining online microwave sterilization with auxiliary agent and gravity sedimentation, and specifically comprises the following steps: a large amount of white water generated in the screen part forming and squeezing section of the reconstituted tobacco sheet base by the paper-making method is collected to a closed white water collecting pulp tank with a horizontal stirrer, the outlet of the white water collecting pulp tank adopts a centrifugal pump to pump the white water to a microwave sterilization device, and the outlet of the centrifugal pump is provided with an adjusting valve and an electromagnetic flow meter for accurately controlling the flow of the white water. The method comprises the following steps that white water stays in a microwave sterilization device for 3-5 min and then reaches a cache tank with a vertical stirrer, an auxiliary agent adding point is arranged at an inlet of the cache tank, the auxiliary agent adding point is 1-3 per mill of the flow of the white water (a white water flow meter displayed by a centrifugal pump outlet flow meter), the auxiliary agent and the white water stay in the cache tank for 30-60 s to achieve full and uniform mixing and then enter a settling separation tank, the tank body is provided with the vertical stirrer, the inner wall of an upper end socket of the tank body is provided with a long baffle plate and a short baffle plate, the long baffle plate plays a role in guiding the flow direction of the white water and accelerating the settling of suspended matters and macromolecular substances in the white water, and the short baffle plate plays a role in blocking floating slag from entering the; a scraper is arranged at the bottom of the vertical stirring mechanism in the sedimentation separation tank, a certain gap is kept between the scraper and the inner wall of the lower end socket of the tank body, a drain outlet is arranged at the bottom of the tank body, an automatic switch valve is arranged on a drain pipeline, sediment at the bottom of the tank body is scraped by the scraper and discharged from the drain outlet, and the tank body is cleaned periodically; the top of the tank body is provided with an automatic spraying device, and scum on the wall of the inner wall of the tank body is cleaned by using as little water as possible; a liquid outlet is arranged at the upper part of the middle cylinder of the tank body, an automatic regulating valve is arranged on the liquid outlet pipeline and used for ensuring that the working liquid level of the tank body is always higher than the upper plane of the liquid outlet, and white water is discharged from the liquid outlet after staying in the tank body for 40-60 min and is used for cleaning a low-pressure net part and a blanket of a paper machine.
The invention purifies and recycles the white water generated in the production process of the paper-making reconstituted tobacco, solves the problems of microorganism enrichment, decay and the like in the circulation treatment process of the white water, does not influence the production continuity, has low investment, simple and convenient operation and low energy consumption, ensures that the quality of the treated white water is good, and reduces the consumption of the clean water in the whole line and the sewage treatment load when the sterilized and purified white water is used for cleaning a low-pressure net part and a blanket of a paper machine.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
In order to make the technical purpose, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention are further described below with reference to the accompanying drawings and specific embodiments.
Example 1
As shown in fig. 1, a novel white water purifying treatment recycling system for paper-making reconstituted tobacco comprises a white water collecting slurry tank 1, a centrifugal pump 2, a microwave sterilization device 3, a buffer tank 4 and a settling separation tank 5 which are sequentially connected through a pipeline, wherein the white water collecting slurry tank 1 consists of an upper end cover, a cylinder body and a lower bottom plate, the upper end cover and the lower bottom plate are respectively arranged at the top and the bottom of the cylinder body, a white water inlet 11 is arranged in the middle of the upper end cover of the white water collecting slurry tank 1, a white water outlet 12 is arranged at the bottom of the cylinder body of the white water collecting slurry tank 1, a first liquid level meter 61 is arranged above the white water outlet 12, and a horizontal stirrer 7 is arranged in the white water collecting slurry tank 1; a vertical stirrer 8 and a second liquid level meter 62 are arranged in the cache tank 4, a vertical stirring mechanism 9 and a third liquid level meter 63 are arranged in the sedimentation separation tank 5, the sedimentation separation tank 5 consists of an upper sealing head, a lower sealing head and a barrel body, the left end of the upper sealing head of the sedimentation separation tank 5 is provided with a liquid inlet, and the upper right end of the barrel body of the sedimentation separation tank 5 is provided with a liquid outlet.
Furthermore, a regulating valve 101 and a flow meter 102 are sequentially arranged on a pipeline between the centrifugal pump 2 and the microwave sterilization device 3 near the outlet of the centrifugal pump 2, so that the flow of white water at the outlet of the centrifugal pump can be accurately controlled.
Furthermore, an auxiliary agent 10 adding point is arranged on a pipeline at the inlet of the buffer tank 4, and the addition amount of the auxiliary agent 10 is 1 per mill to 3 per mill of the white water flow (namely the white water flow displayed by the flow meter 102).
Further, the inner wall of the upper end enclosure of the sedimentation separation tank 5 between the liquid inlet of the sedimentation separation tank 5 and the vertical stirring mechanism 9 is sequentially provided with a long baffle 51 and an automatic spraying device 53 from left to right, and the inner wall of the upper end enclosure of the sedimentation separation tank 5 on the right side of the vertical stirring mechanism 9 is vertically provided with a short baffle 52.
Further, the vertical stirring mechanism 9 comprises a stirring shaft 92, the top of the stirring shaft 92 extends out of the sedimentation separation tank 5, the top of the stirring shaft is connected with a motor 91, a scraper 93 is arranged at the lower end of the stirring shaft 92, and a space is formed between the scraper 93 and a lower seal head of the sedimentation separation tank 5.
Further, the first level gauge 61, the second level gauge 62, the third level gauge 63, the regulating valve 101 and the flow meter 102 are connected to the DCS control system.
Further, the regulating valve 101 and the flow meter 102 are controlled by PID interlocking.
Further, the upper surface of the lower floor of the white water collecting vat 1 is an inclined surface 13, and the lowest point of the inclined surface 13 is close to the white water outlet 12.
Further, the lowest point of the bottom of the cache tank 4 is provided with a first drain outlet, the first drain outlet is connected with a drain pipeline, and a first switch valve 201 is arranged on the drain pipeline at the first drain outlet.
Further, the lowest point of the lower end enclosure of the settling separation tank 5 is provided with a second sewage draining outlet, the second sewage draining outlet is connected with a sewage draining pipeline, and a second switch valve 202 is arranged on the sewage draining pipeline at the second sewage draining outlet.
When the device is used, a large amount of white water generated in the screen part forming and squeezing section of the reconstituted tobacco sheets by the paper-making method is collected to a closed white water collecting pulp tank 1 with a horizontal stirrer 7, the liquid level in the white water collecting pulp tank 1 is read by a first liquid level meter 61, the lower bottom plate of the white water collecting pulp tank 1 is formed by pouring concrete, the collected white water can be ensured to be completely discharged by an inclined surface 13 of the lower bottom plate of the white water collecting pulp tank 1, the white water is pumped to a microwave sterilization device 3 by a centrifugal pump 2 at the outlet of the white water collecting pulp tank 1, a regulating valve 101 and an electromagnetic flowmeter 102 are arranged at the outlet of the centrifugal pump 2 and used for accurately controlling the flow of the white water, and the regulating valve 101 can realize the flow set on the flowmeter 102 according to a chain program. After staying for 3-5 min in the microwave sterilization device 3, the white water reaches a buffer tank 4 with a vertical stirrer 8 (the lowest part of the bottom of the buffer tank 4 is provided with a first sewage discharge port, the first sewage discharge port is connected with a sewage discharge pipeline, a first switch valve 201 is arranged on the sewage discharge pipeline from the first sewage discharge port, and the buffer tank 4 can be cleaned regularly), stays for 30-60 s in the buffer tank 4 with an auxiliary agent 10 to be fully and uniformly mixed, and then enters a sedimentation separation tank 5, the tank body is provided with a vertical stirring mechanism 9, the inner wall of an upper end socket of the tank body is provided with a long baffle and a short baffle, the long baffle 51 plays a role in guiding the flow direction of the white water and accelerating the sedimentation of suspended matters and macromolecular substances in the white water, and the short baffle 52 plays a role in blocking floating slag from entering the next process; a scraper 93 is arranged at the bottom of a vertical stirring mechanism 9 in the sedimentation separation tank 5, a certain gap is kept between the scraper 93 and the inner wall of the lower end enclosure of the tank body, a sewage discharge outlet is arranged at the bottom of the tank body, an automatic switch valve 202 is arranged on a sewage discharge pipeline, sediment at the bottom of the tank body is scraped by the scraper 93 and discharged from the sewage discharge outlet, and the tank body is cleaned periodically; the top of the tank body is provided with an automatic spraying device 53, and scum on the wall of the inner wall of the tank body is cleaned by using as little water as possible; the middle cylinder of the tank body is provided with a liquid outlet near the upper part, the liquid outlet pipeline is provided with an automatic regulating valve for ensuring that the working liquid level of the tank body is always higher than the upper plane of the liquid outlet, and white water stays in the tank body for 40-60 min and then is used for cleaning a low-pressure net part and a blanket of a paper machine through the liquid outlet.
The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any manner. Those skilled in the art can make numerous possible variations and modifications to the present teachings, or modify equivalents thereof, without departing from the scope thereof, by applying the methods and techniques disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiment example according to the technical essence of the present invention are still within the protection scope of the technical solution of the present invention, unless the technical essence of the present invention departs from the content of the technical solution of the present invention.
Claims (8)
1. A papermaking method reconstituted tobacco plain boiled water purification treatment recycling system, characterized by: the white water collection slurry tank consists of an upper end cover, a cylinder body and a lower bottom plate, the upper end cover and the lower bottom plate are respectively arranged at the top and the bottom of the cylinder body, a white water inlet is arranged in the middle of the upper end cover of the white water collection slurry tank, a white water outlet is arranged at the bottom of the cylinder body of the white water collection slurry tank, and a first liquid level meter is arranged above the white water outlet; a horizontal stirrer is arranged in the white water collecting slurry tank, a vertical stirrer and a second liquid level meter are arranged in the buffer tank, a vertical stirring mechanism and a third liquid level meter are arranged in the sedimentation separation tank, the sedimentation separation tank consists of an upper end enclosure, a lower end enclosure and a cylinder body, a liquid inlet is arranged at the left end of the upper end enclosure of the sedimentation separation tank, a liquid outlet is arranged at the right upper end of the cylinder body of the sedimentation separation tank, an auxiliary agent adding point is arranged on a pipeline at the inlet of the buffer tank, and the addition amount of the auxiliary agent is 1-3 per thousand of the flow of the white; the inner wall of the upper end enclosure between the liquid inlet of the sedimentation separation tank and the vertical stirring mechanism is sequentially provided with a long baffle and an automatic spraying device, the inner wall of the upper end enclosure on the right side of the vertical stirring mechanism of the sedimentation separation tank is vertically provided with a short baffle, the retention time of the white water in the microwave sterilization device is 3-5 min, the retention time of the auxiliary agent and the white water in the buffer tank is 30-60 s, and the retention time of the white water in the sedimentation separation tank is 40-60 min.
2. The papermaking-process reconstituted tobacco white water purification treatment recycling system according to claim 1, characterized in that: an adjusting valve and a flowmeter are sequentially arranged on a pipeline between the centrifugal pump and the microwave sterilization device and close to the outlet of the centrifugal pump, so that the flow of white water at the outlet of the centrifugal pump can be accurately controlled.
3. The papermaking-process reconstituted tobacco white water purification treatment recycling system according to claim 1, characterized in that: the vertical stirring mechanism comprises a stirring shaft, the top of the stirring shaft extends out of the sedimentation separation tank, the top of the stirring shaft is connected with a variable frequency motor, a scraper blade is arranged at the lower end of the stirring shaft, and an interval is arranged between the scraper blade and a lower end enclosure of the sedimentation separation tank.
4. The papermaking-process reconstituted tobacco white water purification treatment recycling system according to claim 1 or 2, characterized in that: the first liquid level meter, the second liquid level meter, the third liquid level meter, the regulating valve and the flow meter are all connected into the DCS control system.
5. The papermaking-process reconstituted tobacco white water purification treatment recycling system according to claim 4, characterized in that: and the regulating valve and the flow meter are controlled in an interlocking mode by PID.
6. The papermaking-process reconstituted tobacco white water purification treatment recycling system according to claim 1, characterized in that: the upper surface of the lower bottom plate of the white water collecting pulp tank is an inclined plane, and the lowest point of the inclined plane is close to the white water outlet.
7. The papermaking-process reconstituted tobacco white water purification treatment recycling system according to claim 1, characterized in that: the bottom minimum of buffer tank is equipped with first drain port, and first drain port links to each other with sewage pipes, is equipped with first ooff valve on the sewage pipes.
8. The papermaking-process reconstituted tobacco white water purification treatment recycling system according to claim 1, characterized in that: and a second sewage draining outlet is formed in the lowest point of the lower end enclosure of the sedimentation separation tank and is connected with a sewage draining pipeline, and a second switch valve is arranged on the sewage draining pipeline.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810062268.6A CN108203189B (en) | 2018-01-23 | 2018-01-23 | White water purification treatment recycling system for paper-making reconstituted tobacco |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810062268.6A CN108203189B (en) | 2018-01-23 | 2018-01-23 | White water purification treatment recycling system for paper-making reconstituted tobacco |
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| CN108203189A CN108203189A (en) | 2018-06-26 |
| CN108203189B true CN108203189B (en) | 2020-11-20 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101262192B1 (en) * | 2012-11-15 | 2013-05-14 | 녹스 코리아(주) | Device of manufacturing bio-fuel made of solid separated from livestock wastewater |
| CN103172196A (en) * | 2013-02-27 | 2013-06-26 | 广东省金叶烟草薄片技术开发有限公司 | Treatment and recycling technology of white water in production of paper-making reconstituted tobacco |
| CN107512830A (en) * | 2017-09-27 | 2017-12-26 | 江苏国盛华清环保科技有限公司 | A kind of cigar mill's process for comprehensively treating sewage |
-
2018
- 2018-01-23 CN CN201810062268.6A patent/CN108203189B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101262192B1 (en) * | 2012-11-15 | 2013-05-14 | 녹스 코리아(주) | Device of manufacturing bio-fuel made of solid separated from livestock wastewater |
| CN103172196A (en) * | 2013-02-27 | 2013-06-26 | 广东省金叶烟草薄片技术开发有限公司 | Treatment and recycling technology of white water in production of paper-making reconstituted tobacco |
| CN107512830A (en) * | 2017-09-27 | 2017-12-26 | 江苏国盛华清环保科技有限公司 | A kind of cigar mill's process for comprehensively treating sewage |
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