CN202688768U - Device for recycling papermaking drying tail gas - Google Patents
Device for recycling papermaking drying tail gas Download PDFInfo
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- CN202688768U CN202688768U CN 201220234261 CN201220234261U CN202688768U CN 202688768 U CN202688768 U CN 202688768U CN 201220234261 CN201220234261 CN 201220234261 CN 201220234261 U CN201220234261 U CN 201220234261U CN 202688768 U CN202688768 U CN 202688768U
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- tail gas
- heat exchanger
- pipeline
- recycle device
- dried
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Abstract
The utility model belongs to the technical field of tail gas treatment equipment in the papermaking industry and particularly relates to a device for recycling papermaking drying tail gas. The device comprises a tail gas emission device and a heat exchanger, wherein the tail gas emission device is connected with the gas inlet of the heat exchanger, the water inlet of the heat exchanger is connected with a clean water pipeline, and the water outlet of the heat exchanger is connected with a water heating tank through a pipeline. According to the device for recycling papermaking drying tail gas, the original steam consumption of the water heating tank can be reduced, the production cost is lowered, and the effects of energy saving and environmental protection are achieved; and the device is simple in structure and convenient in operation.
Description
Technical field
The utility model belongs to paper industry tail gas treatment device technical field, particularly the recycle device of papermaking oven dry tail gas.
Background technology
In paper industry, process slurrying, deinking, bleaching, moulding are carried out after the press dewatering after manufacturing paper with pulp, and need to carry out drying forming, and oven dry section needs the applying steam system to carry out the oven dry of paper, wherein can produce a large amount of steam tail gas.To the present general way of the processing method of these steam tail gas be, otherwise steam directly is discharged in the atmosphere, perhaps through common condenser steam cooling is discharged afterwards again.The latter's processing method need to use condensed water and steam carries out heat exchange, and the hot water that obtains generally is used as the spray clear water and is used.
Steam directly is discharged in the atmosphere, can atmosphere pollution, and utilize condensed water to carry out the temperature that heat exchange reduces steam, use water later reasonably not utilized, waste water resource not only also increases the expense of vent gas treatment.
Summary of the invention
The purpose of this utility model is to provide the recycle device of papermaking oven dry tail gas; it can be recycled the heat energy of the no steam tail gas of oven dry section in the middle of other the processing step; effectively processed steam tail gas; the delivery that produces is to hot water storgae; reduced the steam consumption of hot water storgae; apparatus structure is simple, and recovery utilization rate is high, and environmental protection is played a significantly greater role.
For achieving the above object, the utility model adopts following technical proposals:
The recycle device of papermaking oven dry tail gas, comprise gas emission device, also comprise heat exchanger, described gas emission device connects the air inlet of described heat exchanger, the water inlet of described heat exchanger connects fresh water pipeline, and the delivery port of described heat exchanger is connected to hot water storgae by pipeline.
Wherein, described pipeline is provided with the second pneumatic control valve.。
Wherein, described heat exchanger also be provided with the clear water return pipe, the delivery port of clear water return pipe is connected with described water inlet.
Wherein, be provided with temperature transmitter between the described hot water storgae of the delivery port of described heat exchanger.
Wherein, described temperature transmitter also connects another pipeline, and pipeline communication is to spraying the pond.
Wherein, the pipeline between described temperature transmitter and the described spray pond is provided with the first pneumatic control valve.
Wherein, the pipeline between described the second pneumatic control valve and the described temperature transmitter is provided with manual modulation valve.
Wherein, described the second pneumatic control valve is connected with the liquid level PID control device.
Wherein, described the first pneumatic control valve is connected with temperature difference PID controller.
Wherein, described heat exchanger is the shell and tube interchanger.
The beneficial effects of the utility model: the recycle device of papermaking oven dry tail gas, comprise gas emission device, also comprise heat exchanger, described gas emission device connects the air inlet of described heat exchanger, the water inlet of described heat exchanger connects fresh water pipeline, and the delivery port of described heat exchanger is connected to hot water storgae by pipeline.Be communicated to heat exchanger from the steam tail gas of oven dry section discharging by gas emission device, clear water and steam carry out heat exchange in heat exchanger, can directly be discharged in the atmosphere behind the steam cooling, clear water becomes hot water through heat exchange, and the sizing material that hot water passes to applying glue section prepares in the hot water storgae in workshop, can reduce hot water storgae steam consumption originally, reduce production costs, reach the effect of energy-conserving and environment-protective, and apparatus structure is simple, operating aspect.
Description of drawings
Fig. 1 is the overall structure schematic diagram of the recycle device of the utility model papermaking oven dry tail gas.
Reference numeral:
1-heat exchanger, 2-hot water storgae the 3-the second pneumatic control valve
The 4-the first pneumatic control valve 5-manual modulation valve 6-temperature transmitter
7-liquid level PID control device, 8-temperature difference PID controller 9-spray pond
10-control valve, 11-clear water return pipe.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described in detail.
Embodiment one.
As described in Figure 1, the recycle device of papermaking oven dry tail gas, comprise gas emission device, also comprise heat exchanger 1, described gas emission device connects the air inlet of described heat exchanger 1, the water inlet of described heat exchanger 1 connects fresh water pipeline, and the delivery port of described heat exchanger 1 is connected to hot water storgae 2 by pipeline.Steam tail gas enters from the A of heat-exchange tube, and clear water enters by the B mouth, then by D outlet output hot water.
Need through applying glue workshop section after the papermaking oven dry, sizing material prepares that the hot water storgae 2 in workshop adds is low temperature clear water about 20 ℃, need to add saturated vapor low temperature clear water water temperature is increased to 85 ℃ of ability uses, and the steam of oven dry section discharging contains a large amount of heat energy, by heat exchanger 1 the low temperature clear water is become high-temperature-hot-water, temperature can surpass 50 ℃, even can reach the temperature of direct use, thereby effectively reduce the use amount of hot water storgae 2 saturated vapors, reach energy-conservation effect.
Connect a heat exchanger 1 at the steam tail gas tapping equipment, then directly connect by pipeline, to using the workshop, simple in structure, equipment cost is low delivery.
Described pipeline is provided with the second pneumatic control valve 3.Pneumatic control valve is exactly take compressed air as power source, take cylinder as actuator, and remove to drive valve by means of annexes such as electropneumatic valve positioner, converter, electromagnetic valve, guarantor position valves, realize that switching value or proportion expression regulate, has control simple, reaction is quick, and uses safety, does not need to take in addition the advantage of explosion precaution again, second pneumatic control valve 3 here, can regulate according to the liquid level of hot water storgae 2 hot water, under normal circumstances, the second pneumatic control valve 3 is in open mode.
As preferred embodiment, described heat exchanger 1 also be provided with clear water return pipe 11, the delivery port of clear water return pipe 11 is connected with described water inlet.Water through for the first time heat exchange can flow out from Fig. 1 in the C outlet of heat exchanger 1, and then carries out again heat exchange through the B entrance.The clear water water inlet pipe can arrange a control valve 10, carries out the adjusting of inflow.Clear water return pipe 11 can allow and carry out heat exchange through over-heat-exchanger 1 again through clear water, and water temperature is further promoted, thereby increases the utilization rate of steam tail gas, reduces the steam use amount of hot water storgae 2.
Embodiment two.
As shown in Figure 1, the difference of the present embodiment and embodiment one is: be provided with temperature transmitter 6 between the described hot water storgae 2 of the delivery port of described heat exchanger 1.Temperature transmitter 6 can be responded to the water temperature after heat exchanger 1 carries out heat exchange, then regulates according to the situation of water temperature.
Described temperature transmitter 6 also connects another pipeline, and pipeline communication is to spraying pond 9.Measure when few if sizing material prepares the hot water demand of the hot water storgae 2 in workshop, unnecessary hot water can lead to the spray pond 9 of net splenium, is used for cleaning net, guarantees that heat exchanger 1 can process tail gas continuously, also can effectively utilize hot water.
In order to reach better effect, the pipeline between described temperature transmitter 6 and the described spray pond 9 is provided with the first pneumatic control valve 4.Can effectively regulate according to actual conditions.
Unaccounted feature adopts the explanation among the embodiment one in the present embodiment, no longer gives unnecessary details at this.
Embodiment three.
As shown in Figure 1, the difference of the present embodiment and the first two embodiment is: be provided with manual modulation valve 5 between described the second pneumatic control valve 3 and the described temperature transmitter 6.Control and operation that manual modulation valve 5 can allow operating personnel more neatly hot water be used can in time be processed and be regulated in special circumstances.
As preferred embodiment, described the second pneumatic control valve 3 is connected with liquid level PID control device 7.Described the first pneumatic control valve 4 is connected with temperature difference PID controller 8.The PID controller can directly carry out related job with the pneumatic control valve that links to each other, as long as preset concrete process conditions, can realize automation mechanized operation.
In the present embodiment, described heat exchanger 1 is the shell and tube interchanger, relatively simple for structure, compact, the low cost of tubular heat exchanger, and can select different tube sides to increase the time of water in pipe, improve the utilization rate of steam.
Unaccounted feature adopts the explanation among embodiment one and the embodiment two in the present embodiment, no longer gives unnecessary details at this.
Should be noted that at last; above fact Example is only in order to illustrate the technical solution of the utility model; but not to the restriction of this practicality protection domain; although with reference to preferred embodiment the utility model is described in detail; those of ordinary skill in the art is to be understood that; can make amendment or be equal to replacement the technical solution of the utility model, and not break away from essence and the scope of technical solutions of the utility model.
Claims (10)
1. the recycle device of tail gas is dried in papermaking, comprise gas emission device, it is characterized in that: also comprise heat exchanger, described gas emission device connects the air inlet of described heat exchanger, the water inlet of described heat exchanger connects fresh water pipeline, and the delivery port of described heat exchanger is connected to hot water storgae by pipeline.
2. the recycle device of tail gas is dried in papermaking according to claim 1, and it is characterized in that: described pipeline is provided with the second pneumatic control valve.
3. the recycle device of papermaking according to claim 2 oven dry tail gas is characterized in that: described heat exchanger also be provided with the clear water return pipe, the delivery port of clear water return pipe is connected with described water inlet.
4. the recycle device of papermaking oven dry tail gas according to claim 3 is characterized in that: be provided with temperature transmitter between the described hot water storgae of the delivery port of described heat exchanger.
5. the recycle device of tail gas is dried in papermaking according to claim 4, and it is characterized in that: described temperature transmitter also connects another pipeline, and pipeline communication is to spraying the pond.
6. the recycle device of tail gas is dried in papermaking according to claim 5, and it is characterized in that: the pipeline between described temperature transmitter and the described spray pond is provided with the first pneumatic control valve.
7. the recycle device of tail gas is dried in papermaking according to claim 6, and it is characterized in that: the pipeline between described the second pneumatic control valve and the described temperature transmitter is provided with manual modulation valve.
8. the recycle device of tail gas is dried in papermaking according to claim 7, and it is characterized in that: described the second pneumatic control valve is connected with the liquid level PID control device.
9. the recycle device of tail gas is dried in papermaking according to claim 8, and it is characterized in that: described the first pneumatic control valve is connected with temperature difference PID controller.
10. the recycle device of tail gas is dried in papermaking according to claim 9, and it is characterized in that: described heat exchanger is the shell and tube interchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220234261 CN202688768U (en) | 2012-05-23 | 2012-05-23 | Device for recycling papermaking drying tail gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220234261 CN202688768U (en) | 2012-05-23 | 2012-05-23 | Device for recycling papermaking drying tail gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202688768U true CN202688768U (en) | 2013-01-23 |
Family
ID=47544411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220234261 Expired - Lifetime CN202688768U (en) | 2012-05-23 | 2012-05-23 | Device for recycling papermaking drying tail gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202688768U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108252150A (en) * | 2016-12-29 | 2018-07-06 | 上海东冠纸业有限公司 | A kind of energy-saving system of paper-making drying cylinder |
| CN110130139A (en) * | 2018-02-09 | 2019-08-16 | 杭州碧空环境科技有限公司 | Papermaking drying portion's exhaust air deodorization takes off bletilla waste heat utilization equipment |
-
2012
- 2012-05-23 CN CN 201220234261 patent/CN202688768U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108252150A (en) * | 2016-12-29 | 2018-07-06 | 上海东冠纸业有限公司 | A kind of energy-saving system of paper-making drying cylinder |
| CN108252150B (en) * | 2016-12-29 | 2024-01-23 | 上海东冠纸业有限公司 | Energy-saving and consumption-reducing system of papermaking drying cylinder |
| CN110130139A (en) * | 2018-02-09 | 2019-08-16 | 杭州碧空环境科技有限公司 | Papermaking drying portion's exhaust air deodorization takes off bletilla waste heat utilization equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Free format text: FORMER OWNER: DONGGUAN DILONG PAPER INDUSTRY CO., LTD. DONGGUAN HAILONG PAPER CO., LTD. DONGGUAN TIANLONG PAPER INDUSTRY CO., LTD. Effective date: 20130816 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130816 Address after: 523000 Guangdong province Dongguan City Machong town Xinsha Port Industrial Zone Patentee after: Dongguan Nine Dragons Paper Co., Ltd. Address before: 523000 Guangdong city in Dongguan Province Ma Er Cun, Dongguan Nine Dragons Paper Co. Ltd. Patentee before: Dongguan Nine Dragons Paper Co., Ltd. Patentee before: Dongduan Land Dragon Paper Industry Co., Ltd. Patentee before: Dongguan Hailong Paper Co., Ltd. Patentee before: Dongguan Tianlong Paper Industry Co., Ltd. |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20170707 Address after: Dongcheng Industrial Zone, Xinmin City, Liaoning, Shenyang Patentee after: Nine Dragons Paper (Shenyang) Co., Ltd. Address before: 523000 Guangdong province Dongguan City Machong town Xinsha Port Industrial Zone Patentee before: Dongguan Nine Dragons Paper Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130123 |
|
| CX01 | Expiry of patent term |