Waste gas treatment equipment for printing and dyeing setting machine
By adopting two-stage combustion technology in the exhaust gas treatment equipment of the printing and dyeing and dyeing machine, combining steam generators and bag dust collectors, the problems of complex process, low purification efficiency and high operating costs in the existing technology are solved, and efficient, economical and environmentally friendly treatment of waste gas is achieved.
Patent Information
- Application Number
- CN202421164967.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-05-27
AI Technical Summary
When handling the exhaust gas of the shaping machine, the existing printing and dyeing plants have complex processes, difficult maintenance and management, low dust purification efficiency, high investment, easy to cause clogging and failure of equipment, and are greatly affected by the gas temperature and humidity, and the treatment effect is unstable.
The exhaust gas is subjected to high-temperature burning and purification of the combustion chamber calculating and heat storage combustion. Combined with the steam generator and bag dust collector, the comprehensive utilization and purification of the exhaust gas is achieved through energy recovery and the design of the air preheater.
The deep purification of dust and organic gas in the exhaust gas is achieved, the heating fuel is saved, the system operation cost is reduced, and the purification effect and equipment reliability and stability are improved.
Smart Images
Figure CN222670023U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of waste gas treatment of printing and dyeing equipment, in particular to waste gas treatment equipment of a printing and dyeing setting machine. Background Art
[0002] At present, most printing and dyeing factories use wet electrostatic and heat recovery - spray washing - wet electrostatic treatment process to purify the exhaust gas from the setting machine, but there are many process problems during the operation, resulting in low purification effect and normal utilization rate of equipment.
[0003] Wet electrostatic waste gas treatment equipment, this waste gas environmental protection process has the following problems: it is relatively complicated, requiring a high level of transportation, installation and maintenance management of the molding machine waste gas treatment equipment; the equipment has certain requirements for the dust resistivity, so it has certain selections for dust and cannot make all dusts obtain high purification efficiency; the one-time investment is large, the electrostatic precipitator occupies a large area, and the fume particles condense and adhere in the pipeline and equipment, which can easily lead to blockage and failure of the pipeline equipment, and it is also flammable and explosive; it is greatly affected by operating conditions such as gas temperature and humidity, and the same dust will have different effects when operated at different temperatures and humidities. Utility Model Content
[0004] Fabric setting machines are needed in the printing and dyeing process. The setting machines will emit exhaust gas of a certain temperature (such as >150℃) during operation. The exhaust gas contains combustible dust and VOCs. The VOCs contained in it are difficult to handle and are easily attached to the pipes. At present, many printing and dyeing factories use condensation, spraying and demisting methods to handle them. This method has high investment costs, poor treatment effects and is easy to cause energy loss, thus causing environmental pollution. At the same time, the exhaust gas contains more heat, which is not conducive to energy conservation and emission reduction.
[0005] The present invention aims to provide a waste gas treatment device for a printing and dyeing setting machine, which can reliably, stably and efficiently treat pollutants in the waste gas discharged by the setting machine, and at the same time, realize the comprehensive utilization of energy and reduce the system operation cost by adopting multiple measures.
[0006] The utility model provides the following technical solutions:
[0007] An exhaust gas treatment device for a printing and dyeing setting machine includes an air intake link, a combustion link, a filtering link, and an energy recovery link;
[0008] The air intake link includes a first fan, a first valve, a second valve and a first three-way pipe, wherein one end of the first three-way pipe is connected to the exhaust gas of the setting machine and the connecting pipe is provided with the first valve, one end is connected to the air and the connecting pipe is provided with the second valve, and one end is connected to the air inlet of the fan;
[0009] The combustion link includes a first burner and a combustion chamber, the combustion chamber is connected to the exhaust port of the fan, the first burner is connected to the combustion chamber, and the combustion chamber is connected to a heat storage combustion device;
[0010] The filtering process includes a steam generator and a bag dust collector, and the steam generator and the bag dust collector are connected.
[0011] The steam generator outlet is connected to a second tee, one end of which is connected to the steam generator, and the other end is connected to a tubular air preheater. The flue gas after waste heat utilization and the air after heating are mixed through the second tee and then connected to a bag filter to remove dust from the gas to meet the reuse standard. The bag filter outlet pipe is connected to the second fan, and the gas after dust removal enters the next link;
[0012] The upper end of the tubular air preheater is connected to the air inlet duct, and air is blown in by the third fan. The lower end of the tubular air preheater is connected to the air outlet duct, and the heated air is passed into the second three-way valve in front of the bag filter to be mixed with the main flue gas.
[0013] The discharge end of the second fan is provided with a third tee, and one end of the third tee is connected to a shaping machine, and a twelfth valve is provided between the connecting pipes of the two, the other end of the third tee is connected to a tubular air preheater, and a thirteenth valve is provided between the connecting pipes of the two, the exhaust port of the tubular air preheater is connected to a fourth fan, and the exhaust port of the fourth fan is connected to a chimney.
[0014] Preferably, the heat storage combustion equipment consists of a first chamber, a second chamber and a third chamber, a second burner is installed between the first chamber and the second chamber, a third burner is installed between the second chamber and the third chamber, and an air outlet branch pipe and an air inlet branch pipe are provided at the lower end of each chamber, and each branch pipe is respectively provided with a third valve, a fourth valve, a fifth valve, a sixth valve, a seventh valve, and an eighth valve, each air inlet branch pipe is connected to a main air inlet pipe, and the main air inlet pipe is connected to the combustion chamber, and each air outlet branch pipe is connected to a main air outlet pipe, and the main air outlet pipe is connected to a steam generator.
[0015] Preferably, the flue gas temperature in the chamber connected to the top of the heat storage combustion equipment is greater than 800°C, and the exhaust flue gas temperature is greater than 100°C.
[0016] Preferably, the energy recovery link includes a main exhaust pipe of a heat storage combustion device connected to the flue gas inlet of a steam generator, the lower end of the working fluid side of the steam generator is connected to hot water, and the upper end is connected to a steam buffer storage tank through a steam pipe, and the heat of the high-temperature flue gas is used to heat the water into steam with certain pressure and temperature parameters for use in other steam-using links in the factory.
[0017] Preferably, the first chamber, the second chamber and the third chamber may be filled with one or more layers of honeycomb heat storage body.
[0018] Preferably, a first dust detector is installed at the air inlet front end of the bag collector to detect whether the dust concentration in the blown gas reaches the equipment startup standard during the purge link before startup, and a second dust detector is installed at the exhaust rear end of the bag collector to detect whether the dust concentration in the treated flue gas reaches the emission standard during the operation of the equipment.
[0019] Preferably, a first temperature measuring point and a first pressure measuring point are provided at the front end of the thermal storage combustion equipment, a second temperature measuring point and a second pressure measuring point are directly provided at the rear end of the thermal storage combustion equipment and the steam generator, a third temperature measuring point and a first dust detector are provided between the steam generator and the bag dust collector, and a second dust detector is provided between the second fan and the chimney. The temperature measuring point is detected by a temperature detector, and the pressure measuring point is detected by a pressure detector, which are used to detect whether the temperature and pressure of the detection area reach the set values during preheating, normal operation and shutdown.
[0020] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit the present invention.
[0021] The utility model adopts a two-stage combustion method of combustion chamber combustion and heat storage combustion to perform high-temperature combustion purification treatment on the waste gas. The waste gas first enters the combustion chamber for preliminary pretreatment and heating, mainly for preliminary purification of fluff and other combustible dust in the waste gas, and then is connected to the heat storage combustion system. After high-temperature combustion, the organic gas in the waste gas is deeply decomposed. By adopting heat storage to recycle the high-temperature waste heat in the flue gas, the incoming waste gas is heated, and the heating fuel is saved. The flue gas generated by the heat storage combustion system is connected to the steam generator, and the flue gas is used by the steam generator to Heat generates steam, and the flue gas outlet of the steam generator is connected to the bag-type dust collector. The flue gas outlet of the bag-type dust collector is connected to a tee. One end downstream of the tee connects the treated hot exhaust gas to the setting machine, and the other end is connected to the tubular air preheater. The waste heat of the hot exhaust gas is used to heat the air. The air heated by the tubular air preheater flows back to the tee upstream of the bag-type dust collector to stabilize the temperature of the mainstream flue gas and dilute the moisture in the original flue gas. The flue gas cooled by the waste heat of the tubular air preheater is discharged into the atmosphere through the chimney.
[0022] The beneficial effects are:
[0023] The first stage combustion chamber can purify the fluff and other dust in the exhaust gas, and the second stage heat storage combustion can deeply purify the VO35s in the exhaust gas. Through the two-stage combustion, the deep purification of combustibles in the exhaust gas can be achieved stably and reliably.
[0024] By installing a bag filter, dust in the exhaust gas after combustion can be filtered and purified, creating conditions for the exhaust gas to flow back into the shaping machine as a working medium for fabric drying and shaping.
[0025] The heat storage combustion method saves the fuel consumed in heating the exhaust gas to a higher temperature, such as >800°C, and reduces the system operation cost.
[0026] The steam generator is used to exchange energy with the waste gas after high-temperature combustion to recover steam, which can be used in other steam-using links in the factory.
[0027] The tubular air preheater is used to achieve heat exchange between air and part of the incinerated exhaust gas, further recovering the waste heat of the flue gas. At the same time, the heated air flows back to the tee in front of the bag filter and mixes with the main exhaust gas to reduce energy loss.
[0028] By returning the remaining waste gas after burning to the setting machine for use in fabric steaming and shaping, because of its higher temperature than normal temperature air, the energy consumed by the conventional setting machine using air heating as the working medium for fabric steaming and shaping can be greatly saved.
[0029] The utility model can realize comprehensive and efficient utilization of energy while processing dust and organic gas in the exhaust gas of the setting machine, and can also prevent dust and oil smoke from accumulating and adhering to the inner wall of the pipeline and equipment during the combustion process, so as to ensure long-term reliable and stable operation of the system. Through comprehensive recycling of heat, such as producing steam, hot flue gas returning to the setting machine, and hot flue gas heating and dilution air, the energy consumption of the system is greatly saved, and the economy of the system operation is improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0030] Figure 1 A schematic diagram of the structure of a waste gas treatment device for a printing and dyeing setting machine provided in an embodiment of the utility model
[0031] Reference numerals:
[0032] 1. First valve; 2. Second valve; 3. First fan; 4. First burner; 5. Combustion chamber; 6. First temperature measuring point; 7. First pressure measuring point; 8. Third valve; 9. Fourth valve; 10. Fifth valve; 11. Sixth valve; 12. Seventh valve; 13. Eighth valve; 14. Second burner; 15. Third burner; 16. Second temperature measuring point; 17. Second pressure measuring point; 18. Ninth valve; 19. Tenth valve; 20. Steam generator; 21. Third temperature measuring point; 22. Eleventh valve; 23. First dust detector; 24. Bag filter; 25. Second fan; 26. Second dust detector; 27. Twelfth valve; 28. Thirteenth valve; 29. Tubular air preheater; 30. Third fan; 31. Chimney; 32. Fourth fan; 33. First chamber; 34. Second chamber; 35. Third chamber; 36. Forming machine. DETAILED DESCRIPTION
[0033] The embodiments of the present invention are described below in conjunction with the accompanying drawings in the embodiments of the present invention.
[0034] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms, "connection" and "installation" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. In addition, "connection" can be a direct connection or an indirect connection through an intermediate medium. Among them, "fixed" means that they are connected to each other and the relative position relationship after connection remains unchanged. The directional terms mentioned in the embodiments of the present utility model, such as "inside", "outside", "top", "bottom", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present utility model, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present utility model.
[0035] In the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.
[0036] In the embodiment of the present invention, "and / or" is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.
[0037] References to "one embodiment" or "some embodiments" etc. described in this specification mean that one or more embodiments of the utility model include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.
[0038] Example 1
[0039] Combined with Figure 1The exhaust gas is purified by high-temperature combustion in the combustion chamber and heat storage combustion in two stages. The exhaust gas first enters the combustion chamber for preliminary pretreatment and heating, mainly for preliminary purification of fluff and other combustible dust in the exhaust gas, and then is connected to the heat storage combustion equipment. The organic gas in the exhaust gas is deeply decomposed by high-temperature combustion. The high-temperature waste heat in the flue gas is recycled by heat storage to heat the incoming exhaust gas, saving heating fuel. The flue gas generated by the heat storage combustion equipment is connected to the steam generator 20, and the heat of the flue gas is used to generate steam. The flue gas outlet of the steam generator 20 is connected to the bag filter 24, and the flue gas outlet of the bag filter 24 is connected to a tee. One end of the downstream of the tee connects the processed hot exhaust gas to the setting machine 36, and the other end connects to the tubular air preheater 29, which uses the waste heat of the hot exhaust gas to heat the air. The air heated by the tubular air preheater 29 flows back to the tee upstream of the bag filter 24 to stabilize the temperature of the mainstream flue gas and dilute the moisture in the original flue gas. The flue gas cooled by the waste heat of the tubular air preheater 29 is discharged into the atmosphere through the chimney. The specific operation process is as follows:
[0040] The system needs to be purged before starting. The specific operation is as follows: air is passed into the combustion chamber 5 through the first fan 3 and blown into the heat storage combustion equipment. After the purge gas is purged, it passes through the steam generator 20, passes through the dust detection system, passes through the bag filter 24, is blown into the tubular air preheater 29 through the second fan 25, and is discharged through the chimney 31.
[0041] After the purging is completed, the equipment enters the preheating stage, and the combustion chamber 5 and the interior of the heat storage combustion equipment are heated by the second burner 14 and the third burner 15. When the temperature of the combustion chamber 5 and the interior temperature of the heat storage combustion equipment reach the set temperature, the preheating is completed.
[0042] After preheating, the system enters the normal operation stage. The industrial waste gas first enters the combustion chamber 5 for preliminary pretreatment and heating, mainly to preliminarily purify the fluff and other combustible dust in the waste gas, and then connects to the heat storage combustion equipment to perform high-temperature burning and deep purification on the gas phase organic matter in the waste gas. The flue gas outlet of the heat storage combustion equipment is connected to the steam generator 20. The high-temperature flue gas enters the steam generator 20 and exchanges heat with hot water. The heat of the high-temperature flue gas is used to heat the water into steam with a certain pressure and temperature, which is used for other steam-using links in the factory. The flue gas outlet of the steam generator 20 is connected to the bag filter 24. The flue gas cooled by the steam generator 20 is passed into the bag filter 24 to filter out dust in the flue gas. The flue gas outlet of the bag filter 24 is connected to a tee, one end of which returns the treated hot exhaust gas to the setting machine 36, and the other end is connected to the tubular air preheater 29, and the air is heated by the waste heat of the treated hot exhaust gas. The air heated by the tubular air preheater 29 is returned to the tee at the inlet of the bag filter 24, and mixed with the main flue gas to stabilize the temperature of the main flue gas and dilute the moisture in the original flue gas. The flue gas cooled by the waste heat of the tubular air preheater 29 is connected to the chimney 31 and discharged into the atmosphere.
[0043] When the equipment needs to stop working, it needs to be shut down for cooling and purging. Each burner is in a stopped state. The air is passed into the combustion chamber 5 and the heat storage combustion equipment in sequence through the first fan 3, and blown in from the lower part of the chamber. The high-temperature air flows from the heat storage combustion equipment to the steam generator 20. The steam generator 20 is connected to the external water pipe. The water inlet of the water pipe is provided with a ninth valve 18, and the water outlet of the water pipe is provided with a tenth valve 19. 80°C hot water is passed into the steam generator 20 through the ninth valve 18. The high-temperature air uses the heat to generate and heat up the steam. The temperature of the high-temperature air drops, and the steam temperature rises to 300°C for use in other steam-using links in the factory. The air is blown into the bag filter 24 to filter out the dust in the air, and the air is blown into the chimney and discharged from the chimney 31. When the temperature measurement point before the steam generator 20 detects that the gas temperature is less than 200°C, the steam generator 20 stops working, and the air passes directly through the steam generator 20. It is discharged from the chimney 31. When it is detected that the dust requirement meets the standard, and the temperature sensor of the combustion chamber 5 detects that the temperature is <200℃, and the temperature sensor of the internal chamber of the heat storage combustion equipment detects that the temperature is <200℃, the purge fan is turned off, and then the inlet and outlet valves of the system are closed.
[0044] Based on the above principles, the technical solution structure of the utility model is as follows:
[0045] Including intake link, combustion link, filtration link, and energy recovery link;
[0046] The air intake link includes a first fan 3, a first valve 1, a second valve 2 and a first three-way pipe, one end of the first three-way pipe is connected to the exhaust gas of the setting machine and the connecting pipe is provided with the first valve 1, one end is connected to the air and the connecting pipe is provided with the second valve 2, and one end is connected to the air inlet of the fan 3;
[0047] The combustion link includes a first burner 4, a combustion chamber 5, the combustion chamber 5 is connected to the exhaust port of the fan 3, the first burner 4 is connected to the combustion chamber 5, and the combustion chamber 5 is connected to a heat storage combustion device;
[0048] The filtering process includes a steam generator 20 and a bag filter 24. The steam generator 20 and the bag filter 24 are connected.
[0049] The outlet of the steam generator 20 is connected to a second tee, one end of which is connected to the steam generator 20, and the other end is connected to a tubular air preheater 29. The flue gas after waste heat utilization and the air after heating are mixed through the second tee and then connected to a bag filter 24 to remove dust from the gas so that it meets the standard for reuse. The outlet pipe of the bag filter 24 is connected to the second fan 25, and the gas after dust removal enters the next link;
[0050] The upper end of the tubular air preheater 29 is connected to the air inlet duct, and air is blown in by the third fan 30. The lower end of the tubular air preheater 29 is connected to the air outlet duct, and the heated air is passed into the second three-way valve in front of the bag filter 24 to be mixed with the main flue gas.
[0051] A third tee is provided at the discharge end of the second fan 25, and one end of the third tee is connected to a shaping machine 36, and a twelfth valve 27 is provided between the connecting pipes of the two, the other end of the third tee is connected to a tubular air preheater 29, and a thirteenth valve 28 is provided between the connecting pipes of the two, and the exhaust port of the tubular air preheater 29 is connected to a fourth fan 32, and the exhaust port of the fourth fan 32 is connected to a chimney 31.
[0052] In the utility model, the heat storage combustion equipment is composed of a first chamber 33, a second chamber 34 and a third chamber 35. A second burner 14 is installed between the first chamber 33 and the second chamber 34, and a third burner 15 is installed between the second chamber 34 and the third chamber 35. An air outlet branch pipe and an air inlet branch pipe are provided at the lower end of each chamber. Each branch pipe is respectively provided with a third valve 8, a fourth valve 9, a fifth valve 10, a sixth valve 11, a seventh valve 12, and an eighth valve 13. Each air inlet branch pipe is connected to a main air inlet pipe, and the main air inlet pipe is connected to the combustion chamber 5. Each air outlet branch pipe is connected to a main air outlet pipe, and the main air outlet pipe is connected to the steam generator 20.
[0053] The combustion link of the utility model adopts two-stage combustion, the first stage is combustion in the combustion chamber, through local high-temperature burning, purifies the fluff and other combustible dust in the exhaust gas, and the second stage is heat storage combustion. The heat storage combustion system adopts a three-chamber layout, and two of the three chambers are used at the same time, that is, one chamber takes in air for heating, one chamber discharges air for heat storage, and the third chamber is used as a buffer and fault standby. The above combination is carried out in a cyclic reciprocating manner to achieve the purpose of fully burning and deeply purifying the organic matter in the exhaust gas while achieving the purpose of recycling the waste heat of the flue gas and reducing the fuel used for heating.
[0054] In the utility model, the temperature of the smoke in the chamber connected to the top of the heat storage combustion equipment is greater than 800°C, and the temperature of the discharged smoke is greater than 100°C.
[0055] In the utility model, the energy recovery link includes connecting the main exhaust pipe of the heat storage combustion equipment with the flue gas side inlet of the steam generator 20, the lower end of the working medium side of the steam generator 20 is connected to hot water, and the upper end is connected to the steam buffer storage tank through a steam pipe. The heat of the high-temperature flue gas is used to heat the water into steam with certain pressure and temperature parameters for use in other steam-using links in the factory.
[0056] Energy recovery link: The flue gas main at the outlet of the heat storage combustion system is connected to the flue gas inlet of the steam generator 20. The lower end of the working medium side of the steam generator 20 is connected to hot water. The internal bend is arranged in a roundabout way. The bend is perpendicular to the flue gas flow direction. The upper end is connected to the steam buffer tank through a steam pipeline. The heat of the high-temperature flue gas is used to heat the water into steam with certain pressure and temperature parameters, which is used for other steam-using links in the factory. At the outlet of the bag filter 24, a part of the flue gas passes through the air preheater to exchange heat with the air, and the waste heat of the flue gas is recycled to heat the air from room temperature, and then passes through the pipeline. The flue gas flows back to the tee upstream of the bag-type dust collector 24 and mixes with the main flue gas. While recovering the waste heat of the flue gas, the temperature of the main flue gas can be stabilized, reducing the fluctuation of the flue gas temperature caused by the start and stop of different heat storage chambers of the heat storage combustion equipment, thereby avoiding affecting the normal use of the bag-type dust collector; the remaining part of the flue gas that has been fully filtered and purified by the bag-type dust collector 24 flows back to the setting machine through the flue, and serves as the working medium for evaporation and setting of the setting machine. Because it has a certain temperature, such as >150°C, which is higher than the temperature of the commonly used working medium - air, it can save the heating heat required to raise the temperature to the working temperature.
[0057] In the utility model, one or more layers of honeycomb heat storage bodies can be filled inside the first chamber 33 , the second chamber 34 and the third chamber 35 .
[0058] In the utility model, a first dust detector 23 is installed at the air inlet front end of the bag dust collector 24, which is used to detect whether the dust concentration in the blown gas reaches the equipment startup standard in the purge link before startup, and a second dust detector 26 is installed at the exhaust rear end of the bag dust collector 24, which is used to detect whether the dust concentration in the treated flue gas reaches the emission standard during the operation of the equipment.
[0059] In the utility model, a first temperature measuring point 6 and a first pressure measuring point 7 are arranged at the front section of the heat storage combustion equipment, a second temperature measuring point 16 and a second pressure measuring point 17 are directly arranged at the rear end of the heat storage combustion equipment and the steam generator 20, a third temperature measuring point 21 and a first dust detector 23 are arranged between the steam generator 20 and the bag filter 24, a second dust detector 26 is arranged between the second fan 25 and the chimney 27, a temperature measuring point is detected by a temperature detector, and a pressure measuring point is detected by a pressure detector, which are used for detecting whether the temperature and pressure of the detection area reach the set values during preheating, normal operation and shutdown.
[0060] The above are only specific implementations of the utility model, but the protection scope of the utility model is not limited to them. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model; in the absence of conflicts, the embodiments of the utility model and the features in the embodiments can be combined with each other. Therefore, the protection scope of the utility model shall be based on the protection scope of the claims.
Claims
1. A waste gas treatment device for a printing and dyeing setting machine, characterized in that: Including intake link, combustion link, filtration link, and energy recovery link; The air intake link comprises a first fan (3), a first valve (1), a second valve (2) and a first three-way pipe, wherein one end of the first three-way pipe is connected to the exhaust gas of the setting machine and the connecting pipe is provided with the first valve (1), one end is connected to the air and the connecting pipe is provided with the second valve (2), and one end is connected to the air inlet of the fan (3); The combustion link comprises a first burner (4) and a combustion chamber (5), wherein the combustion chamber (5) is connected to an exhaust port of a fan (3), the first burner (4) and the combustion chamber (5) are connected, and the combustion chamber (5) is connected to a heat storage combustion device; The filtering link comprises a steam generator (20) and a bag dust collector (24), wherein the steam generator (20) and the bag dust collector (24) are connected to each other. The outlet of the steam generator (20) is connected to a second tee, one end of the second tee is connected to the steam generator (20), and the other end is connected to a tubular air preheater (29), and an eleventh valve (22) is provided between the steam generator (20) and the tubular air preheater (29). The flue gas after waste heat utilization and the air after heating and temperature increase are mixed through the second tee and then connected to a bag filter (24) to remove dust in the gas so that the gas meets the standard for reuse. The air outlet pipe of the bag filter (24) is connected to a second fan (25); The tubular air preheater (29) has an upper end connected to an air inlet duct, into which air is blown by a third fan (30), and a lower end connected to an air outlet duct, through which the heated air is passed to a second three-way valve in front of the bag filter (24) to be mixed with the main flue gas; The discharge end of the second fan (25) is provided with a third tee, and one end of the third tee is connected to a setting machine (36), and a twelfth valve (27) is provided between the connecting pipes of the two. The other end of the third tee is connected to a tubular air preheater (29), and a thirteenth valve (28) is provided between the connecting pipes of the two. The exhaust port of the tubular air preheater (29) is connected to a fourth fan (32), and the exhaust port of the fourth fan (32) is connected to a chimney (31).
2. The waste gas treatment equipment for a printing and dyeing setting machine according to claim 1 is characterized in that: The heat storage combustion device is composed of a first chamber (33), a second chamber (34) and a third chamber (35). A second burner (14) is installed between the first chamber (33) and the second chamber (34), and a third burner (15) is installed between the second chamber (34) and the third chamber (35). An outlet branch pipe and an inlet branch pipe are provided at the lower end of each chamber. A third valve (8), a fourth valve (9), a fifth valve (10), a sixth valve (11), a seventh valve (12) and an eighth valve (13) are provided on each branch pipe. Each inlet branch pipe is connected to a main inlet pipe, and the main inlet pipe is connected to the combustion chamber (5). Each outlet branch pipe is connected to a main outlet pipe, and the main outlet pipe is connected to a steam generator (20).
3. The waste gas treatment equipment for a printing and dyeing setting machine according to claim 2 is characterized in that: The temperature of the flue gas in the chamber connected to the top of the heat storage combustion equipment is greater than 800°C, and the temperature of the discharged flue gas is greater than 100°C.
4. The waste gas treatment equipment for a printing and dyeing setting machine according to claim 3 is characterized in that: The energy recovery link includes connecting the main exhaust pipe of the heat storage combustion equipment to the flue gas side inlet of the steam generator (20); the lower end of the working medium side of the steam generator (20) is connected to hot water, and the upper end is connected to the steam buffer storage tank through a steam pipeline, and the heat of the high-temperature flue gas is used to heat the water into steam with certain pressure and temperature parameters for use in other steam-using links in the factory.
5. The waste gas treatment equipment for a printing and dyeing setting machine according to claim 4 is characterized in that: The first chamber (33), the second chamber (34) and the third chamber (35) may be filled with one or more layers of honeycomb heat storage bodies.
6. The waste gas treatment equipment for a printing and dyeing setting machine according to claim 5, characterized in that: The bag filter (24) is provided with a first dust detector (23) at the air inlet front end for detecting whether the dust concentration in the blown gas reaches the equipment startup standard in the purge process before startup. The bag filter (24) is provided with a second dust detector (26) at the exhaust rear end for detecting whether the dust concentration in the treated flue gas reaches the emission standard during the operation of the equipment.