CN104727181A - Tail gas heat recycling structure used for paper making machine drying cylinder - Google Patents
Tail gas heat recycling structure used for paper making machine drying cylinder Download PDFInfo
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- CN104727181A CN104727181A CN201510072416.9A CN201510072416A CN104727181A CN 104727181 A CN104727181 A CN 104727181A CN 201510072416 A CN201510072416 A CN 201510072416A CN 104727181 A CN104727181 A CN 104727181A
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- drying cylinder
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- gas
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F5/00—Dryer section of machines for making continuous webs of paper
- D21F5/20—Waste heat recovery
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Drying Of Solid Materials (AREA)
Abstract
The invention relates a tail gas heat recycling structure used for a paper making machine drying cylinder. According to the tail gas heat recycling structure used for the paper making machine drying cylinder, an exhausting pipe used for exhausting steam in the drying cylinder is arranged on the drying cylinder. The tail gas heat recycling structure used for the paper making machine drying cylinder further comprises a heat exchanger preheating normal-temperature air through the temperature of steam in the exhaust pipe, the heat exchanger comprises a body with an inner cavity, the body is provided with a gas inlet pipe which is connected with the body and used for feeding the normal-temperature air into the body, and a preheating tube is further arranged in the body and connected with the exhaust pipe. In the specific using process, the temperature of gas exhausted from the interior of the drying cylinder is higher than the normal temperature, and therefore the gas can be used for heating the normal-temperature air, the gas is exhausted out of the drying cylinder and then enters the preheating tube in the body through the exhaust pipe, the preheating tube is heated, then the preheated tube transfers heat to the inner cavity of the body, and therefore the heat of the tail gas of the drying cylinder can be recycled.
Description
Technical field
The present invention relates to the tail gas heat quantity recovery structure for paper machine dryer.
Background technology
Drying cylinder is the essential element of paper industry, its effect is for being dried by paper, during specific works, in drying cylinder, feed high-temperature gas, utilize high-temperature gas to be heated by drying cylinder, then drying cylinder rotates and carries out drying operation to paper, because paper is uninterrupted supply, therefore, in order to ensure that the temperature of drying cylinder meets the requirements, also need uninterruptedly to feed high-temperature gas in drying cylinder.
The high-temperature gas fed in drying cylinder in prior art is evenly feed drying cylinder after carrying out preheating, heating by normal temperature air, just discharged by exhaust component after heated drying cylinder, and the temperature of drying is higher than normal temperature, because drawing, the gas temperature of exhaust drying cylinder is still higher than normal temperature air, and this heat is not recycled in concrete use procedure, cause and will have a large amount of waste; In addition, when normal temperature air being heated in prior art, first pass through heat exchanger, normal temperature air is heated to the air of uniform temperature, then these air with uniform temperature by hot water power board, further heating improves temperature, system is sent into finally by pressure fan, this makes in normal temperature air warm very complicated, substantially increases the use cost of drying cylinder, serious waste of resources.
Summary of the invention
Tail gas heat quantity recovery structure for paper machine dryer provided by the invention, the heat being intended to overcome in prior art in drying cylinder Exhaust Gas does not effectively utilize, cause the wasting of resources, deficiency that papermaking cost is high.
In order to solve the problems of the technologies described above, the present invention adopts following technical scheme: for the tail gas heat quantity recovery structure of paper machine dryer, comprise drying cylinder, described drying cylinder is provided with the blast pipe for being discharged by steam in drying cylinder, also comprise and utilize the temperature of steam in blast pipe to carry out the heat exchanger of preheating to normal temperature air, described heat exchanger comprises the main body with inner chamber, described main body is provided with air inlet pipe, described air inlet pipe connects with main body and sends in main body by normal temperature air, also economizer bank is provided with in described main body, described economizer bank connects with blast pipe, described economizer bank is coiled in main body, described main body be also provided with the appendix for the normal temperature air after heating being sent into drying cylinder and be used for the escape pipe of gas discharge in economizer bank, the filtering bodies for filtering normal temperature air is provided with in described air inlet pipe.
As preferably, also comprise the air pump for inputting gas at normal temperature in air inlet pipe, described air pump is variable pump, described appendix is provided with the temperature detector for detecting gas temperature in appendix, the flow of described air pump is controlled by temperature detector, by set temperature detector, can detect the temperature of gas in appendix, when gas temperature in appendix is lower than setting value, control air pump by temperature detector and reduce flow, thus can ensure that in appendix, gas temperature meets the requirements, when gas temperature in appendix is higher than setting value, air pump augmented flow is controlled by temperature detector, thus make that there is in appendix more gas and flow through, improve the stability of gas conveying.
As preferably, the some turbulent sheets for making air-flow form turbulent flow in main body are also provided with in described main body, described turbulent sheet and main body are integral type structure, the gas in main body can be made to form turbulent flow by arranging turbulent sheet, make economizer bank can be positioned at the gas of main body by homogeneous heating, improve the efficiency of heating surface and the heating quality of gas.
As preferably, described filtering bodies is threaded connection and is arranged in air inlet pipe, described filtering bodies is provided with external screw thread, the internal thread suitable with external screw thread in filtering bodies is provided with in described air inlet pipe, described air inlet pipe comprises at least two air inlets, filtering bodies is equipped with in described air inlet, filtering bodies is threaded connection and is arranged in air inlet pipe, the gas entered in air inlet pipe can filter by body after filtration, foreign material are avoided to enter in air inlet pipe, improve the stability of air inlet pipe, in addition, by arranging at least two air inlets, when one of them blocks, another can also provide gas in air supply pipe, easy to use.
As preferably, also comprise the air pump for inputting gas at normal temperature in air inlet pipe, described appendix is provided with the temperature detector for detecting gas temperature in appendix, being positioned at temperature detector rear in described appendix is also provided with for carrying out the calandria heated further to appendix gas, described calandria is controlled by temperature detector, by set temperature detector and calandria, calandria is flow through after the gas being positioned at appendix is detected by temperature detector, when gas temperature is lower than setting value, temperature detector controls calandria work, thus can heat gas further, ensure the temperature stabilization of gas in appendix, easy to use.
As preferably, described calandria is the heating tube that inside has heater strip, and described heating tube is coiled in appendix, and by being coiled in appendix by heating tube, the gas-heated being positioned at appendix is even, easy to use.
Tail gas heat quantity recovery structure for paper machine dryer provided by the invention, tool has the following advantages: drying cylinder is provided with the blast pipe for being discharged by steam in drying cylinder, also comprise and utilize the temperature of steam in blast pipe to carry out the heat exchanger of preheating to normal temperature air, described heat exchanger comprises the main body with inner chamber, described main body is provided with air inlet pipe, described air inlet pipe connects with main body and sends in main body by normal temperature air, is also provided with economizer bank in described main body, and described economizer bank connects with blast pipe; In concrete use procedure, by the gas temperature of discharging in drying cylinder higher than normal temperature, therefore, this gas available heats normal temperature air, gas enters in intrinsic economizer bank by blast pipe after drying cylinder is discharged, to preheating, visitor heats, then by economizer bank, heat is sent to chamber body, thus the heat of drying cylinder tail gas is recycled, while economizing on resources, greatly reduce the production cost of kind of papermaking, in addition, by arranging filtering bodies, can filter gas easily, avoid gas to enter in heat exchanger, use very convenient.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of the present invention for the tail gas heat quantity recovery structure embodiment one of paper machine dryer,
Accompanying drawing 2 is the present invention's structural representations for the tail gas heat quantity recovery structure embodiment two of paper machine dryer.
Detailed description of the invention
Embodiment one
Below in conjunction with accompanying drawing, the tail gas heat quantity recovery structure for paper machine dryer of the present invention is described further.As shown in Figure 1, for the tail gas heat quantity recovery structure of paper machine dryer, comprise drying cylinder 1, described drying cylinder 1 is provided with the blast pipe 2 for being discharged by steam in drying cylinder 1, also comprise and utilize the temperature of steam in blast pipe 2 to carry out the heat exchanger 3 of preheating to normal temperature air, described heat exchanger 3 comprises the main body 4 with inner chamber, described main body 4 is provided with air inlet pipe 5, described air inlet pipe 5 connects with main body 4 and is sent into by normal temperature air in main body 4, economizer bank 6 is also provided with in described main body 4, described economizer bank 6 connects with blast pipe 2, described economizer bank 6 is coiled in main body 4, described main body 4 be also provided with the appendix 7 for the normal temperature air after heating being sent into drying cylinder 1 and be used for the escape pipe 8 of gas discharge in economizer bank 6, the filtering bodies 9 for filtering normal temperature air is provided with in described air inlet pipe 5, common filtration for filtering gas in described filtering bodies 9 i.e. prior art, described economizer bank 6 should be obtained by Heat Conduction Material, to enable the gas at normal temperature in heat Heating body 4.
Also comprise the air pump 10 for inputting gas at normal temperature in air inlet pipe 5, described air pump 10 is variable pump, described appendix 7 is provided with the temperature detector 11 for detecting gas temperature in appendix 7, the flow of described air pump 10 is controlled by temperature detector 11, described temperature detector 11 can by the mode of wired or wireless communication by information transmission to the control device of air pump 10, then by the control device of air pump 10, air pump 10 is controlled, because the control device of air pump 10 and air pump 10 is prior art, do not introduce at this.
The some turbulent sheets 12 for making air-flow form turbulent flow in main body 4 are also provided with in described main body 4, described turbulent sheet 12 is integral type structure with main body 4, described main body 4 can adopt the mode of casting to obtain, to make to arrange turbulent sheet 12 easily in main body 4; Described main body 4 also can adopt split-type structural, is then combined by welding manner, arranges turbulent sheet 12 also very convenient in this split type theme.
Described filtering bodies 9 is threaded connection and is arranged in air inlet pipe 5, described filtering bodies 9 is provided with external screw thread, the internal thread suitable with external screw thread in filtering bodies 9 is provided with in described air inlet pipe 5, described air inlet pipe 5 comprises at least two air inlets 13, filtering bodies 9 is equipped with in described air inlet 13, described filtering bodies 9 can also be arranged the operating grip for manually taking off filtering bodies 9, described operating grip can be integral type structure with filtering bodies 9, by arranging filtration handle, filtering bodies 9 can be taken off easily and be changed or cleaning, easy to operate.
Embodiment two
As shown in Figure 2, the difference of the present embodiment and embodiment one is: also comprise the air pump 10 for inputting gas at normal temperature in air inlet pipe 5, described appendix 7 is provided with the temperature detector 11 for detecting gas temperature in appendix 7, being positioned at temperature detector 11 rear in described appendix 7 is also provided with for carrying out the calandria 14 heated further to appendix 7 gas, described calandria 14 is controlled by temperature detector 11, described temperature detector 11 can control the duty of calandria 14 by mode that is wireless or wire communication, described calandria 14 is the inner heating tube with heater strip, described heating tube is coiled in appendix 7.
Technique scheme in use, gas is after drying cylinder 1 is discharged, because the temperature of drying cylinder 1 is higher than normal temperature, therefore, the gas temperature of being discharged by drying cylinder 1 is still same as normal temperature, air-flow feeds gas at normal temperature by air pump 10 while blast pipe 2 enters economizer bank 6 in main body 4, gas at normal temperature is preheated after pipe 6 heats and inputs drying cylinder 1 by appendix 7 again in main body 4, owing to being provided with temperature detector 11 in appendix 7 and temperature detector 11 can control the flow of air pump 10, therefore, the gas temperature exported through appendix 7 all meets design temperature; By the gas temperature of discharging in drying cylinder 1 higher than normal temperature, therefore, this gas available heats normal temperature air, gas enters intrinsic economizer bank 6 li by blast pipe 2 after drying cylinder 1 is discharged, to preheating, visitor heats, then by economizer bank 6, heat is sent to chamber body, thus the heat of drying cylinder 1 tail gas is recycled, the production cost of kind of papermaking is greatly reduced while economizing on resources, in addition, by arranging filtering bodies 9, can filter gas easily, avoid gas to enter in heat exchanger 3, use very convenient.
These are only the preferred embodiment of the present invention, being intended to embody outstanding technique effect of the present invention and advantage, is not the restriction to technical scheme of the present invention.Those skilled in the art will appreciate that all amendments made based on the technology of the present invention content, change or substitute technology feature, all should be covered by the technology category of claims of the present invention opinion.
Claims (6)
1. for the tail gas heat quantity recovery structure of paper machine dryer, it is characterized in that: comprise drying cylinder (1), described drying cylinder (1) is provided with the blast pipe (2) for being discharged by interior for drying cylinder (1) steam, also comprise and utilize the temperature of blast pipe (2) interior steam to carry out the heat exchanger (3) of preheating to normal temperature air, described heat exchanger (3) comprises the main body (4) with inner chamber, described main body (4) is provided with air inlet pipe (5), described air inlet pipe (5) connects with main body (4) and is sent into by normal temperature air in main body (4), economizer bank (6) is also provided with in described main body (4), described economizer bank (6) connects with blast pipe (2), described economizer bank (6) is coiled in main body (4), described main body (4) is also provided with for the normal temperature air after heating being sent into the appendix (7) of drying cylinder (1) and the escape pipe (8) for being discharged by gas in economizer bank (6), the filtering bodies (9) for filtering normal temperature air is provided with in described air inlet pipe (5).
2. the tail gas heat quantity recovery structure for paper machine dryer according to claim 1, it is characterized in that: also comprise the air pump (10) for input gas at normal temperature in air inlet pipe (5), described air pump (10) is variable pump, described appendix (7) is provided with the temperature detector (11) for detecting appendix (7) interior gas temperature, and the flow of described air pump (10) is controlled by temperature detector (11).
3. the tail gas heat quantity recovery structure for paper machine dryer according to claim 1, it is characterized in that: be also provided with the some turbulent sheets (12) for making air-flow form turbulent flow in main body (4) in described main body (4), described turbulent sheet (12) and main body (4) are integral type structure.
4. the tail gas heat quantity recovery structure for paper machine dryer according to claim 1, it is characterized in that: described filtering bodies (9) is threaded connection and is arranged in air inlet pipe (5), described filtering bodies (9) is provided with external screw thread, the internal thread that upper external screw thread is suitable with filtering bodies (9) is provided with in described air inlet pipe (5), described air inlet pipe (5) comprises at least two air inlets (13), in described air inlet (13), be equipped with filtering bodies (9).
5. the tail gas heat quantity recovery structure for paper machine dryer according to claim 1, it is characterized in that: also comprise the air pump (10) for input gas at normal temperature in air inlet pipe (5), described appendix (7) is provided with the temperature detector (11) for detecting appendix (7) interior gas temperature, being positioned at temperature detector (11) rear in described appendix (7) is also provided with for carrying out the calandria (14) heated further to appendix (7) gas, described calandria (14) is controlled by temperature detector (11).
6. the tail gas heat quantity recovery structure for paper machine dryer according to claim 5, is characterized in that: described calandria (14) is the inner heating tube with heater strip, and described heating tube is coiled in appendix (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510072416.9A CN104727181B (en) | 2015-02-11 | 2015-02-11 | Tail gas heat quantity recovery structure for paper machine dryer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510072416.9A CN104727181B (en) | 2015-02-11 | 2015-02-11 | Tail gas heat quantity recovery structure for paper machine dryer |
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| Publication Number | Publication Date |
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| CN104727181A true CN104727181A (en) | 2015-06-24 |
| CN104727181B CN104727181B (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510072416.9A Active CN104727181B (en) | 2015-02-11 | 2015-02-11 | Tail gas heat quantity recovery structure for paper machine dryer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105202751A (en) * | 2015-10-23 | 2015-12-30 | 无锡溥汇机械科技有限公司 | Gas heating device |
| CN106608619A (en) * | 2015-10-26 | 2017-05-03 | 安徽华尔泰化工股份有限公司 | Sulfuric acid HRS low-pressure saturated steam heat exchanger |
| CN112145318A (en) * | 2020-08-21 | 2020-12-29 | 深圳市利赛实业发展有限公司 | Tail gas heat utilization device and process in landfill biogas power generation |
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| CN101929095A (en) * | 2009-06-25 | 2010-12-29 | 铨展环能设备(昆山)有限公司 | Air supplying and exhausting system for dryer hood of paper machine |
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| CN202543721U (en) * | 2012-02-15 | 2012-11-21 | 杭州春胜纸业有限公司 | Heat recovery system on papermaking production line |
| CN203654084U (en) * | 2014-01-14 | 2014-06-18 | 山东鲁南纸业股份有限公司 | Waste steam heating device |
| CN204455706U (en) * | 2015-02-11 | 2015-07-08 | 浙江荣晟环保纸业股份有限公司 | For the tail gas heat quantity recovery structure of paper machine dryer |
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2015
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| US4231842A (en) * | 1977-12-22 | 1980-11-04 | Valmet Oy | Recovery of thermal energy from a thermomechanical pulp plant |
| CN101929095A (en) * | 2009-06-25 | 2010-12-29 | 铨展环能设备(昆山)有限公司 | Air supplying and exhausting system for dryer hood of paper machine |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105202751A (en) * | 2015-10-23 | 2015-12-30 | 无锡溥汇机械科技有限公司 | Gas heating device |
| CN106608619A (en) * | 2015-10-26 | 2017-05-03 | 安徽华尔泰化工股份有限公司 | Sulfuric acid HRS low-pressure saturated steam heat exchanger |
| CN112145318A (en) * | 2020-08-21 | 2020-12-29 | 深圳市利赛实业发展有限公司 | Tail gas heat utilization device and process in landfill biogas power generation |
| CN112145318B (en) * | 2020-08-21 | 2021-11-02 | 深圳市利赛实业发展有限公司 | Tail gas heat utilization device and process in landfill biogas power generation |
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| CN104727181B (en) | 2016-08-17 |
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