CN205146633U - Automobile coating drying chamber high temperature flue gas utilizes system - Google Patents

Automobile coating drying chamber high temperature flue gas utilizes system Download PDF

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Publication number
CN205146633U
CN205146633U CN201520796723.7U CN201520796723U CN205146633U CN 205146633 U CN205146633 U CN 205146633U CN 201520796723 U CN201520796723 U CN 201520796723U CN 205146633 U CN205146633 U CN 205146633U
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heat
air
drying chamber
flue gas
air curtain
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CN201520796723.7U
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闫传杰
曹小妮
孙德广
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MH Robot and Automation Co Ltd
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MH Robot and Automation Co Ltd
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Abstract

The utility model discloses an automobile coating drying chamber high temperature flue gas utilizes system, including drying chamber, heating system, new trend heat transfer system, air curtain system, heating system includes heat supplying chamber, combustor, heat exchanger, the combustor is arranged in the heat supplying chamber with the heat exchanger is parallelly connected, new trend heat transfer system includes heat transfer room, heat supply combustor, supplies enthalpy exchanger, gas gas heater, heat transfer fan, heat transfer filter, the heat supply combustor, supplying enthalpy exchanger, parallelly connected to arrange the heat transfer in indoor, air curtain system configuration is at drying chamber both ends upside, the air curtain system includes wind gap, pressurized compartment, air curtain pipeline, air curtain pipeline and air outlet UNICOM, air curtain pipeline both ends be equipped with the pressurized compartment the pressurized compartment downside is equipped with the wind gap, the beneficial effect of the utility model: have that the energy saving and emission reduction effect is showing, monitoring cost, promote economic benefits and showing.

Description

A kind of automobile coating drying chamber high-temperature flue gas utilizes system
Technical field
The utility model relates to a kind of WHRS and utilizes technique, is that a kind of automobile coating drying chamber high-temperature flue gas utilizes system and utilizes technique specifically.
Background technology
In automobile coating production line, drying chamber equipment is main energy consumption equipment at present, and in the daily production of paint line, energy-output ratio is comparatively large, directly affects the production cost of automobile.Domestic paint line mostly adopts the heat supply of natural gas indirect heater, and the flue gas that natural gas produces after combustion heat-exchange is directly discharged into outside factory building, and the flue-gas temperature of discharge is generally between 200 DEG C-300 DEG C, has sizable recycling and is worth.And in the Painting Shop that China builds at present, the high-temperature tail gas after most of Painting Shop combustion of natural gas purification directly enters air, cause the waste of the energy; If by this part waste heat recovery, for the thermal source of other equipment of workshop, a large amount of energy can not only effectively can be saved, also can reduce the operating cost in workshop greatly.
While the organic exhaust gas of drying chamber is drawn out of, the required fresh air supplementing equal volume of drying chamber, the fresh air that drying chamber supplements is from workshop, temperature is workshop condition temperature, these fresh airs directly enter drying chamber, need to be heated to the operating temperature of drying chamber in drying chamber, the heat that this need of work consumption is a large amount of also causes drying chamber temperature unbalanced, and inversion operating efficiency cannot reach designing requirement even increases defective goods rate.Under drying chamber running status, the heat required for the fresh air required for heating, drying room accounts for the 20-30% of total amount of heat needed for drying chamber.Utilize the waste heat of tail gas by after the fresh air preheating required for the drying chamber in workshop, send in the import and export air curtain system of drying chamber again, which reduces the heat required for each drying chamber heating fresh air, reach and maintain indoor temperature and energy-conservation object.
Utility model content
The purpose of this utility model provides one to utilize high temperature waste hot, reclaims that to use be fresh air preheating, realizes that high temperature reclaims, energy-conserving and environment-protective realize the object that temperature dries indoor temperature, steady operation efficiency and reduce defective goods rates.
For achieving the above object, the technical solution of the utility model is: a kind of automobile coating drying chamber high-temperature flue gas utilizes system, comprise drying chamber, heating system, new air heat-exchange system, air curtain system, described heating system comprises for hot cell, combustor, heat exchanger, described combustor is in parallel with heat exchanger is placed in heat supply indoor, on the downside of described confession hot cell, two ends, left and right are respectively equipped with air inlet and gas outlet, described gas outlet homonymy is provided with blower fan, filter is provided with on the left of described blower fan, smoke discharging pipe is provided with on the upside of described heat exchanger, described heating system is located on the upside of drying chamber at least a set of, described new air heat-exchange system comprises Heat Room, heat supply combustor, Heat supply and heat exchange device, flue gas heat-exchange unit, heat exchange blower fan, heat exchange filter, described heat supply combustor, the parallel connection of Heat supply and heat exchange device is placed in Heat Room, be connected with smoke discharging pipe on the upside of described Heat supply and heat exchange device, flue gas heat-exchange unit is provided with on the right side of described Heat supply and heat exchange device, flue gas inlet port and flue gas discharge opening is provided with on the upside of described flue gas heat-exchange unit, described flue gas inlet port is by smoke discharging pipe and heat exchanger and Heat supply and heat exchange device UNICOM, air inlet is provided with on the right side of described Heat Room, on the downside of described Heat Room, left end is provided with air outlet, heat exchange blower fan is provided with on the upside of described air outlet, heat exchange filter is provided with between described heat exchange blower fan and Heat supply and heat exchange device He on the left of air inlet, described new air heat-exchange system is located on the upside of drying chamber at least a set of, described air curtain system is arranged on the upside of drying chamber two ends, described air curtain system comprises air port, compression chamber, air curtain pipeline, described air curtain pipeline and air outlet UNICOM, described air curtain pipe ends is provided with compression chamber, air port is provided with on the downside of described compression chamber.
What the technical program also comprised that a kind of automobile coating drying chamber high-temperature flue gas utilizes system utilizes technique, comprises the following steps:
Step 1: high-temp waste gas reclaims
The high-temp waste gas of heat exchanger, Heat supply and heat exchange device being discharged is in smoke discharging pipe input flue gas heat-exchange unit, and now high-temp waste gas temperature is 250-300 DEG C;
Step 2: new wind heating
New wind enters in Heat Room through air inlet, and this stylish wind is flowed into by room air, and temperature and room temperature maintain an equal level as 20-30 DEG C, and new wind first tentatively heats through flue gas heat-exchange unit, then through the heating of Heat supply and heat exchange device composition, completes the heating of new wind;
Step 3: toxic emission
Through flue gas heat-exchange unit transmission, high-temp waste gas becomes waste gas, and now EGT is 110-150 DEG C, is drained in air through flue gas discharge opening;
Step 4: hot blast uses
Complete the new wind after heating to enter in drying chamber use through air curtain pipeline, air port.
Through proving the technical program energy-saving and emission-reduction, economic effect is as follows:
System is utilized to carry out technical economic analysis to certain automobile factory's Painting Shop using waste heat from tail gas below:
Table 1 high-temperature tail gas parameter list
According to Thermodynamics Formulas, Q=CV(t2-t1)
In formula:
The heat exchange amount of Q-heat exchanger, kcal/h;
The specific heat of C-air, 0.24kcal/Nm3;
The flow of V-high-temperature tail gas, 10000Nm3/h;
T2-high-temperature tail gas enters the actual temperature of heat exchanger, 260 DEG C;
Estimation temperature after the heat exchange of t1-high-temperature tail gas, 110 DEG C,
Above-mentioned numerical value is substituted in formula and draws Q=360000kcal/h, directly by drying chamber is utilized after these heats pass to the fresh air required for drying chamber.If these fresh airs are by each drying chamber conducting self-heating, drying chamber needs the heat used to be Q1=Q/ η;
In formula:
Heat required for Q1---drying chamber heating fresh air, kcal/h;
The thermal efficiency of the indirect case that η---drying chamber adopts, 0.85 draws, Q1=306000kcal/h;
Heating value of natural gas is 8400kcal/Nm3, and the combustion gas that drying chamber can be saved is:
Sr=Q1/q=36.4Nm3/h;
Adopt high-temperature tail gas bootstrap system can make the combustion gas of drying chamber saving per hour 36.4Nm3, calculate by the price 4.00 yuan/Nm3 of native industry natural gas, the cost of saving combustion gas per hour is 36.4x4.00=145.6 unit.
If increase high-temperature tail gas bootstrap system, then the electric power of system increases 15Kw, is 1 yuan of calculating by the price of the every Kwh of commercial power, and owing to adopting high-temperature tail gas bootstrap system, the electric cost of increase per hour is 1x15=15 unit.
Calculate from energy cost, if this workshop increases high-temperature tail gas bootstrap system, per hour cost-saved be that 145.6-15=130.6 is first
Vehicle body 12 is produced with per hour, the then cost-saved 130.6/12=10.881 unit of every chassis body, that is, after adopting high-temperature tail gas surplus heat treatment system, the production cost of bicycle reduces 10.88 yuan, calculate by annual 50000 chassis bodies of producing, annual escapable cost 10.88*50000=544000 unit, and the purchase cost of high-temperature tail gas bootstrap system is only about 500000 yuan, so through calculating, the purchase cost of high-temperature tail gas bootstrap system can all be regained with 12 months by this Painting Shop.
Produce vehicle body 12 by per hour, annual production 50,000 chassis bodies calculate, and are 4167 hours during annual equipment operation chief engineer, calculate, save right gas 151678.8Nm3 every year with the combustion gas of saving 36.4Nm3 per hour.
As can be seen here, the energy-saving benefit of this system is very considerable;
Owing to adopting technique scheme, the beneficial effects of the utility model:
1, the comprehensive utilization of this kind of form fume afterheat compared with traditional form to have production cost low, be convenient to control cost, the energy uses few, the effect that toxic emission is low.
2 and the technical program, in being used in, large-scale indirect drying oven paint line, there is the versatility of similar.
3, existing equipment realizes high-temp waste gas utilization by simply transforming, and obvious economic, cost recovery is fast.
Accompanying drawing explanation
Now by reference to the accompanying drawings the utility model is described further.
Fig. 1 is structural representation of the present utility model.
In figure: 1, drying chamber, 2, for hot cell, 3, combustor, 4, heat exchanger, 5, air inlet, 6, gas outlet, 7, blower fan, 8, filter, 9, smoke discharging pipe, 10, Heat Room, 11, heat supply combustor, 12, Heat supply and heat exchange device, 13, flue gas heat-exchange unit, 14, heat exchange blower fan, 15, heat exchange filter, 16, flue gas inlet port, 17, flue gas discharge opening, 18, air inlet, 19, air outlet, 20, air port, 21, compression chamber, 22, air curtain pipeline.
Detailed description of the invention
As shown in Figure 1, a kind of automobile coating drying chamber 1 high-temperature flue gas of the utility model utilizes system, comprise drying chamber 1, heating system, new air heat-exchange system, air curtain system, described heating system comprises for hot cell 2, combustor 3, heat exchanger 4, described combustor 3 is in parallel with heat exchanger 4 to be placed in in hot cell 2, on the downside of described confession hot cell 2, two ends, left and right are respectively equipped with air inlet 5 and gas outlet 6, described gas outlet 6 homonymy is provided with blower fan 7, filter 8 is provided with on the left of described blower fan 7, smoke discharging pipe 9 is provided with on the upside of described heat exchanger 4, described heating system is located on the upside of drying chamber 1 at least a set of, described new air heat-exchange system comprises Heat Room 10, heat supply combustor 11, Heat supply and heat exchange device 12, flue gas heat-exchange unit 13, heat exchange blower fan 14, heat exchange filter 15, described heat supply combustor 11, Heat supply and heat exchange device 12 parallel connection is placed in Heat Room 10, be connected with smoke discharging pipe 9 on the upside of described Heat supply and heat exchange device 12, flue gas heat-exchange unit 13 is provided with on the right side of described Heat supply and heat exchange device 12, flue gas inlet port 16 and flue gas discharge opening 17 is provided with on the upside of described flue gas heat-exchange unit 13, described flue gas inlet port 16 is by smoke discharging pipe 9 and heat exchanger 4 and Heat supply and heat exchange device 12 UNICOM, air inlet 18 is provided with on the right side of described Heat Room 10, on the downside of described Heat Room 10, left end is provided with air outlet 19, heat exchange blower fan 14 is provided with on the upside of described air outlet 19, equal heat exchange filter 15 is provided with between described heat exchange blower fan 14 and Heat supply and heat exchange device 12 He on the left of air inlet 18, described new air heat-exchange system is located on the upside of drying chamber 1 at least a set of, described air curtain system is arranged on the upside of drying chamber 1 two ends, described air curtain system comprises air port 20, compression chamber 21, air curtain pipeline 22, described air curtain pipeline 22 and air outlet 19 UNICOM, described air curtain pipeline 22 two ends are provided with compression chamber 21, air port 20 is provided with on the downside of described compression chamber 21.
What the technical program also comprised that a kind of automobile coating drying chamber high-temperature flue gas utilizes system utilizes technique: comprise the following steps:
Step 1: high-temp waste gas reclaims
The high-temp waste gas of heat exchanger 4, Heat supply and heat exchange device 11 being discharged inputs in flue gas heat-exchange unit 13 through smoke discharging pipe 9, and now high-temp waste gas temperature is 250-300 DEG C;
Step 2: new wind heating
New wind enters in Heat Room 10 through air inlet, and this stylish wind is flowed into by room air, and temperature and room temperature maintain an equal level as 20-30 DEG C, and new wind first tentatively heats through flue gas heat-exchange unit 13, then through the heating of Heat supply and heat exchange device 12 composition, completes the heating of new wind;
Step 3: toxic emission
Transmit through flue gas heat-exchange unit 13, high-temp waste gas becomes waste gas, and now EGT is 110-150 DEG C, is drained in air through flue gas discharge opening 17;
Step 4: hot blast uses
Complete the new wind after heating to enter in drying chamber use through air curtain pipeline 22, air port 20.

Claims (1)

1. an automobile coating drying chamber high-temperature flue gas utilizes system, comprise drying chamber, heating system, new air heat-exchange system, air curtain system, described heating system comprises for hot cell, combustor, heat exchanger, described combustor is in parallel with heat exchanger is placed in heat supply indoor, on the downside of described confession hot cell, two ends, left and right are respectively equipped with air inlet and gas outlet, described gas outlet homonymy is provided with blower fan, filter is provided with on the left of described blower fan, smoke discharging pipe is provided with on the upside of described heat exchanger, described heating system is located on the upside of drying chamber at least a set of, described new air heat-exchange system comprises Heat Room, heat supply combustor, Heat supply and heat exchange device, flue gas heat-exchange unit, heat exchange blower fan, heat exchange filter, described heat supply combustor, the parallel connection of Heat supply and heat exchange device is placed in Heat Room, be connected with smoke discharging pipe on the upside of described Heat supply and heat exchange device, flue gas heat-exchange unit is provided with on the right side of described Heat supply and heat exchange device, flue gas inlet port and flue gas discharge opening is provided with on the upside of described flue gas heat-exchange unit, described flue gas inlet port is by smoke discharging pipe and heat exchanger and Heat supply and heat exchange device UNICOM, air inlet is provided with on the right side of described Heat Room, on the downside of described Heat Room, left end is provided with air outlet, heat exchange blower fan is provided with on the upside of described air outlet, heat exchange filter is provided with between described heat exchange blower fan and Heat supply and heat exchange device He on the left of air inlet, described new air heat-exchange system is located on the upside of drying chamber at least a set of, described air curtain system is arranged on the upside of drying chamber two ends, described air curtain system comprises air port, compression chamber, air curtain pipeline, described air curtain pipeline and air outlet UNICOM, described air curtain pipe ends is provided with compression chamber, air port is provided with on the downside of described compression chamber.
CN201520796723.7U 2015-10-14 2015-10-14 Automobile coating drying chamber high temperature flue gas utilizes system Active CN205146633U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105214921A (en) * 2015-10-14 2016-01-06 迈赫机器人自动化股份有限公司 A kind of automobile coating drying chamber high-temperature flue gas utilizes system and utilizes technique
CN113465311A (en) * 2021-06-18 2021-10-01 机械工业第九设计研究院有限公司 Drying chamber with air valve replaced by adjusting inserting plate

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105214921A (en) * 2015-10-14 2016-01-06 迈赫机器人自动化股份有限公司 A kind of automobile coating drying chamber high-temperature flue gas utilizes system and utilizes technique
CN113465311A (en) * 2021-06-18 2021-10-01 机械工业第九设计研究院有限公司 Drying chamber with air valve replaced by adjusting inserting plate

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