CN103088510A - Non-return-air classification heat exchange dewatering and air exhaust waste heat utilization relaxation heat setting machine - Google Patents
Non-return-air classification heat exchange dewatering and air exhaust waste heat utilization relaxation heat setting machine Download PDFInfo
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- CN103088510A CN103088510A CN2013100256051A CN201310025605A CN103088510A CN 103088510 A CN103088510 A CN 103088510A CN 2013100256051 A CN2013100256051 A CN 2013100256051A CN 201310025605 A CN201310025605 A CN 201310025605A CN 103088510 A CN103088510 A CN 103088510A
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Abstract
The invention relates to a non-return-air classification heat exchange dewatering and air exhaust waste heat utilization relaxation heat setting machine. An exhaust outlet is formed in the lower portion of a drying chamber, the exhaust outlet is communicated to the outside of a box body through an exhaust tube, an air compensation port in the box body is communicated with a suction port of a fan, an air outlet of the fan is aligned to heat exchangers above the fan, the air outlet above the heat exchangers enters into the drying chamber, an inlet of a high pressure heat exchanger is connected with a steam supply main tube, an outlet of a high pressure drain valve of the high pressure heat exchanger is connected into an inlet of a middle pressure heat exchanger through a first condensate water reuse tube, an outlet of a middle pressure drain valve of the middle pressure heat exchanger is connected into an inlet of a lower pressure heat exchanger through a second condensate water reuse tube, an outlet of the low pressure heat exchanger is connected into a condensate pump through a low pressure drain valve, a preheating air outlet of a new wind preheater is connected into the air compensation port of the relaxation setting machine, and exhaust of the relaxation setting machine is connected into the new wind preheater to achieve indirect heat exchange with new wind. The setting machine can achieve sufficient utilization of waste heat of the exhaust and condensate water, and is high in heat efficiency.
Description
Technical field
The present invention relates to a kind of loosening heat setting machine, particularly a kind of hydrophobic and air exhaust waste heat utilizes loosening heat setting machine without return air classification heat exchange.
Background technology
Loosening heat setting machine is often used in the post processing of polyester staple fiber, the cabinets cavity of loosening heat setting machine is provided with blower fan, heat exchanger and product is carried out the drying chamber of shaping and drying, the inlet scoop of blower fan communicates with wind-supplying mouth on casing, the air outlet of blower fan is aimed at the heat exchanger of top, the air outlet of heat exchanger top enters drying chamber, is provided with exhaust outlet below drying chamber, and exhaust outlet leads to outside casing by exhaust duct, hand control valve is installed on exhaust duct, and return air inlet also communicates with the inlet scoop of blower fan.Entering new wind in casing from wind-supplying mouth mixes by blower fan with return air and blows to heat exchanger, heat exchanger is heated becomes hot blast, hot blast enters drying chamber and product is finalized the design and dry, and then a part of wind enters exhaust outlet by air draft, and a part of wind is by the return air inlet reuse.High-pressure steam pipe, middle pressure steam pipe and low pressure steam pipe are connected with main feed header by stop valve respectively, and main feed header is connected with the entrance of heat exchanger, and the outlet conduit of heat exchanger is provided with drain valve.
The weak point of this loosening heat setting machine is: (1) is different according to product, with steam pressure, Three Estate is arranged, a drain valve but only is installed, drain valve can only work under some pressure, when non-design pressure state, can not keep the required pressure reduction of normal operation, or discharge capacity is inadequate, or steam leakage is serious.(2) waste heat of condensed water that drain valve is arranged needs external user to be used, and when without suitable user, inevitably is drained waste.(3) pollutant that carries of return air very easily in the heat exchanger deposition, worsens heat exchange efficiency.(4) even condensation water residual heat is flashed utilization, the condensate temperature of discharging still has 130 ℃～150 ℃, and the waste heat loss amount is large.(5) the high temperature air exhaust waste heat does not utilize, and exhaust air rate is manually controlled, and discharge capacity randomness is large.
Summary of the invention
The object of the invention is to, overcome problems of the prior art, provide that a kind of hydrophobic and air exhaust waste heat utilizes loosening heat setting machine without return air classification heat exchange, no matter product uses high pressure or middle pressure steam, loosening heat setting machine self all can realize waste heat step, take full advantage of.
for solving above technical problem, it is of the present invention that a kind of hydrophobic and air exhaust waste heat utilizes loosening heat setting machine without return air classification heat exchange, the cabinets cavity of loosening heat setting machine is provided with blower fan, heat exchanger reaches the drying chamber that product is carried out shaping and drying, the inlet scoop of described blower fan communicates with wind-supplying mouth on casing, the air outlet of blower fan is aimed at the heat exchanger of top, the air outlet of described heat exchanger top enters described drying chamber, the drying chamber below is provided with exhaust outlet, described exhaust outlet leads to outside casing by exhaust duct, also comprise the fresh air preheating device, the below of described fresh air preheating device is provided with new wind entrance, the top of fresh air preheating device is provided with pre-hot blast outlet, the exhaust duct access fresh air preheating device of loosening heat setting machine makes air draft and new wind carry out indirect heat exchange, the described wind-supplying mouth of the pre-hot blast outlet access loosening heat setting machine of described fresh air preheating device, described heat exchanger comprises from top to bottom stacked successively high pressure heat exchanger, middle pressure heat exchanger and low pressure heat exchanger, the entrance of described high pressure heat exchanger is connected with main feed header, the outlet access high pressure drain valve of described high pressure heat exchanger, the outlet of described high pressure drain valve is by the entrance of the first described middle pressure heat exchanger of recycling condensing water pipe access, press drain valve in the outlet access of middle pressure heat exchanger, the outlet of middle pressure drain valve is by the entrance of the second described low pressure heat exchanger of recycling condensing water pipe access, and the low pressure heat exchanger exit is by low pressure drain valve access condensate pump.
with respect to prior art, the present invention has obtained following beneficial effect: (1) drying chamber participates in circulation without return air, has avoided the incrustation of return air entrainment heat exchanger surface in setting machine, has increased heat exchange efficiency, has extended the time between overhauls(TBO), (2) air draft of loosening heat setting machine access fresh air preheating device carries out preheating to new wind, waste heat in air draft is recovered, reduce thermal pollution and the heat loss of discharging, sent in loosening heat setting machine after new air temperature is improved, reduced the steam consumption of heat exchanger in the loosening heat setting machine, (3) traditional single heat exchanger is divided into from top to bottom stacked successively high pressure heat exchanger, middle pressure heat exchanger and low pressure heat exchanger, when Product Process needs high steam, only need high pressure heat exchanger steam supply wherein, high steam becomes the high pressure condensed water discharge latent heat in high pressure heat exchanger after, after being dredged out by high pressure drain valve, the high pressure condensed water enters middle pressure heat exchanger, in the flash distillation due to dilatation of middle pressure heat exchanger mesohigh condensed water, the condensed water pressure drop, condensation rapidly after flash steam and air heat-exchange release latent heat, the condensed water of the condensed water of flash distillation and pressure drop and time condensation does not continue to discharge in middle pressure heat exchanger becomes middle pressure condensed water after sensible heat and therefrom presses drain valve to dredge out, during controlling, middle pressure drain valve press the flow of condensed water to guarantee condensed water and the pre-sufficient exchange heat of hot blast, middle pressure condensed water is dredged out by middle pressure drain valve and is entered the low pressure heat exchanger, in the low pressure heat exchanger, the flash distillation again due to dilatation of middle pressure condensed water, condensed water pressure further descends, condensation rapidly after flash steam and air heat-exchange release latent heat, the condensed water of the condensed water that further descends of flash distillation and pressure and three condensations does not continue to discharge in the low pressure heat exchanger becomes the low pressure condensed water after sensible heat and dredges out from the low pressure drain valve, and the flow that the low pressure drain valve is controlled the low pressure condensed water is to guarantee condensed water and the sufficient exchange heat of hot blast in advance, (4) when Product Process need to use middle pressure steam, high pressure heat exchanger and middle pressure heat exchanger all use the middle pressure steam of outer confession, press drain valve to enter the low pressure heat exchanger in the middle pressure condensed water warp that high pressure heat exchanger and middle pressure heat exchanger produce, in the low pressure heat exchanger, the flash distillation due to dilatation of middle pressure condensed water, the condensed water pressure drop, condensation rapidly after flash steam release latent heat, the condensed water of the condensed water of flash distillation and pressure drop and time condensation does not continue to discharge in the low pressure heat exchanger becomes the low pressure condensed water after sensible heat and dredges out from the low pressure drain valve, the low pressure drain valve is controlled the flow of low pressure condensed water to guarantee condensed water and the pre-sufficient exchange heat of hot blast.(5) when Product Process need to use low-pressure steam, high pressure heat exchanger, middle pressure heat exchanger and low pressure heat exchanger all use the low-pressure steam of outer confession, and the condensed water that high pressure heat exchanger, middle pressure heat exchanger and low pressure heat exchanger produce all enters condensate pump through the low pressure drain valve.(6) when Product Process needs high steam, middle pressure heat exchanger and low pressure heat exchanger need not to use outer steam supply, the middle pressure condensed water that the high pressure condensed water that high pressure heat exchanger produces and middle pressure heat exchanger produce need not to rely on external user to use, loosening heat setting machine self has namely been realized the cascade utilization of condensation water residual heat, has avoided the discharging waste of condensation water residual heat.In like manner, when Product Process needs middle pressure steam, the low pressure heat exchanger need not to use outer steam supply, the middle pressure condensed water that high pressure heat exchanger and middle pressure heat exchanger produce need not to rely on external user to use, loosening heat setting machine self has namely been realized taking full advantage of of condensation water residual heat, has avoided the discharging waste of condensation water residual heat.When (7) using high steam, new wind is first through the lower air draft preheating of excess temperature, then by the higher low pressure heat exchanger heating of temperature, then by the higher middle pressure heat exchanger heating of temperature, at last by the highest high pressure heat exchanger heating of temperature; When using middle pressure steam, new wind is first through the lower air draft preheating of excess temperature, then by the higher low pressure heat exchanger heating of temperature, then by temperature higher middle pressure heat exchanger and high pressure heat exchanger heating; When using low-pressure steam, new wind is first through the lower air draft preheating of excess temperature, then by the higher low pressure heat exchanger of temperature, middle pressure heat exchanger and high pressure heat exchanger heating; In this process, the temperature of new wind improves step by step, is also to increase gradually to the temperature of the medium of its heating, and the mode of this countercurrent flow has totally kept very high heat exchange efficiency.(8) the present invention need not to use flash tank, level pressure overflow valve and front pressure control valve, has reduced cost, has saved installing space, has reduced floor space, avoids too bulky complex of laxation shaping machine, is more conducive to arrange in factory building use.The pressure and temperature of saturated vapor and saturated condensed water is one to one, flash distillation utilizes waste heat just to reclaim condensed water in the sensible heat under original pressure and the difference between the sensible heat under flashing pressure, and flashing pressure is lower, the flash steam mobilization dynamic is lower, the flash steam utilization is more difficult, therefore be difficult to condensed water is reduced to below 100 ℃; Reclaim condensation water residual heat with flash distillation and compare, middle pressure heat exchanger of the present invention reclaims high pressure condensed water sensible heat, the low pressure heat exchanger is pressed the condensed water sensible heat in reclaiming, and the exhaust temperature of condensed water can be reduced to below 70 ℃, and heat utilization rate is able to further raising.
As preferred version of the present invention, high-pressure steam pipe, middle pressure steam pipe and low pressure steam pipe are connected with main feed header by the first stop valve, the second stop valve and the 3rd stop valve respectively; Described main feed header directly is connected with the entrance of described high pressure heat exchanger, is connected with the entrance of described middle pressure heat exchanger, is connected with the entrance of described low pressure heat exchanger by the 5th stop valve by the 4th stop valve; Described the first recycling condensing water pipe is provided with the 6th stop valve, and the outlet of described the 6th stop valve also is connected with the entrance of described middle pressure heat exchanger; Described the second recycling condensing water pipe is provided with the 7th stop valve, and the outlet of described the 7th stop valve also is connected with the entrance of described low pressure heat exchanger; The outlet of described high pressure heat exchanger is provided with the 8th stop valve, and the rear of described the 8th stop valve is in series with described high pressure drain valve; The outlet of described middle pressure heat exchanger is provided with the tenth stop valve, and the rear of described the tenth stop valve is in series with described middle pressure drain valve; Between the entrance of described the 8th stop valve and described the tenth stop valve, cross-over connection has the 9th stop valve, and between the entrance of described the tenth stop valve and described low pressure drain valve, cross-over connection has the 11 stop valve.(1) when Product Process need to use high steam, open the first stop valve, the 6th stop valve, the 7th stop valve, the 8th stop valve and the tenth stop valve, close simultaneously the second stop valve, the 3rd stop valve, the 4th stop valve, the 5th stop valve, the 9th stop valve and the 11 stop valve; What this moment, high pressure heat exchanger used is the high steam of outer confession, the condensed water of high pressure heat exchanger enters middle pressure heat exchanger through the 8th stop valve and high pressure drain valve, the condensed water of middle pressure heat exchanger enters the low pressure heat exchanger through the tenth stop valve and middle pressure drain valve, and the condensed water that the low pressure heat exchanger produces enters condensate pump through the low pressure drain valve.(2) when Product Process need to use middle pressure steam, open the second stop valve, the 4th stop valve, the 7th stop valve, the 9th stop valve and the tenth stop valve, close simultaneously the first stop valve, the 3rd stop valve, the 5th stop valve, the 6th stop valve, the 8th stop valve and the 11 stop valve, this moment, high pressure heat exchanger and middle pressure heat exchanger all used the middle pressure steam of outer confession, the condensed water that high pressure heat exchanger produces is through the 9th stop valve, the tenth stop valve and middle pressure drain valve enter the low pressure heat exchanger, the condensed water that middle pressure heat exchanger produces enters the low pressure heat exchanger through the tenth stop valve and middle pressure drain valve, the condensed water that the low pressure heat exchanger produces enters condensate pump through the low pressure drain valve.(3) when Product Process need to use low-pressure steam, open the 3rd stop valve, the 4th stop valve, the 5th stop valve, the 9th stop valve and the 11 stop valve, close simultaneously the first stop valve, the second stop valve, the 6th stop valve, the 7th stop valve, the 8th stop valve and the tenth stop valve, this moment high pressure heat exchanger, middle pressure heat exchanger and low pressure heat exchanger all use the low-pressure steam of outer confession, the condensed water that high pressure heat exchanger produces is through the 9th stop valve, the 11 stop valve and low pressure drain valve enter condensate pump, the condensed water that middle pressure heat exchanger produces enters condensate pump through the 11 stop valve and low pressure drain valve, the condensed water that the low pressure heat exchanger produces directly enters condensate pump through the low pressure drain valve.By the switching of valve, no matter Product Process needs high pressure or middle pressure steam, and heat exchanger is gross area use, drain valve all in design conditions work, and loosening heat setting machine self just can be realized the cascade utilization of condensation water residual heat.
As preferred version of the present invention, the front and back of described high pressure drain valve, middle pressure drain valve and low pressure drain valve are in series with respectively front stop valve and rear stop valve, are parallel with the bypass cutoff valve between the entrance of described front stop valve and the outlet of rear stop valve.Front stop valve and rear stop valve normally are in opening, when drain valve appearance damage needs to change, close front stop valve and rear stop valve, open the bypass cutoff valve, can in the situation that not breaks in production change drain valve, when heat exchanger uses the condensed water heat exchange, also can control flow by the aperture of regulating front stop valve and rear stop valve.
Description of drawings
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments, and accompanying drawing only provides reference and explanation use, and is non-in order to limit the present invention.
Fig. 1 is that hydrophobic and air exhaust waste heat utilizes the schematic diagram of loosening heat setting machine without return air classification heat exchange in the present invention.
In figure: the S1. high-pressure steam pipe; S2. middle pressure steam pipe; S3. low pressure steam pipe; S4. main feed header; E1. high pressure heat exchanger; E2. press heat exchanger in; E3. low pressure heat exchanger; E4. fresh air preheating device; W1. high pressure draining pipe; W2. press drain pipe in; W3. low pressure drain pipe; W4. the first recycling condensing water pipe; W5. the second recycling condensing water pipe; V1. the first stop valve; V2. the second stop valve; V3. the 3rd stop valve; V4. the 4th stop valve; V5. the 5th stop valve; V6. the 6th stop valve; V7. the 7th stop valve; V8. the 8th stop valve; V9. the 9th stop valve; V10. the tenth stop valve; V11. the 11 stop valve; Vt1. high pressure drain valve; Vt2. press drain valve in; Vt3. low pressure drain valve; P1. condensate pump; F1. new wind; F2. pre-hot blast; F4. hot blast; F6. air draft; Fy. blower fan.
The specific embodiment
As shown in Figure 1, hydrophobic and air exhaust waste heat utilizes loosening heat setting machine without return air classification heat exchange in the present invention, the cabinets cavity of loosening heat setting machine is provided with blower fan Fy, drying chamber and heat exchanger, casing is provided with fresh air preheating device E4 outward, the inlet scoop of blower fan Fy communicates with wind-supplying mouth on casing, and the air outlet of blower fan Fy is aimed at the heat exchanger of top, and the air outlet of heat exchanger top enters drying chamber, the drying chamber below is provided with exhaust outlet, and exhaust outlet leads to outside casing by exhaust duct.
Exhaust duct access fresh air preheating device E4 makes air draft F6 and new wind F1 carry out discharging after indirect heat exchange.The below of fresh air preheating device E4 is provided with new wind entrance, and the top of fresh air preheating device E4 is provided with pre-hot blast outlet, the wind-supplying mouth of pre-hot blast outlet access loosening heat setting machine.
The air draft F6 access fresh air preheating device E4 of loosening heat setting machine carries out preheating to new wind F1, and the waste heat in air draft F6 is recovered, and sends into the wind-supplying mouth of loosening heat setting machine after new wind F1 temperature is improved.The pre-hot blast F2 that enters from wind-supplying mouth enters the inlet scoop of blower fan Fy, and the wind that blower fan Fy blows out becomes hot blast F4 and enters drying chamber after the heat exchanger heating, and the humid air in drying chamber is discharged by exhaust duct.
Heat exchanger comprises from top to bottom stacked successively high pressure heat exchanger E1, middle pressure heat exchanger E2 and low pressure heat exchanger E3.Pre-hot blast is blown out by blower fan Fy, and when Product Process need to use high steam, pre-hot blast was first through the higher low pressure heat exchanger E3 heating of excess temperature, then by the higher middle pressure heat exchanger E2 heating of temperature, at last by the highest high pressure heat exchanger E1 heating of temperature; When Product Process need to use middle pressure steam, pre-hot blast was first through the higher low pressure heat exchanger E3 heating of excess temperature, then by temperature higher middle pressure heat exchanger E2 and high pressure heat exchanger E1 heating.In this process, the temperature of air improves step by step, is also to increase gradually to the vapor (steam) temperature of its heating.
High-pressure steam pipe S1, middle pressure steam pipe S2 are connected with main feed header S4 with the 3rd stop valve V3 by the first stop valve V1, the second stop valve V2 respectively with low pressure steam pipe S3.Main feed header S4 directly is connected with the entrance of high pressure heat exchanger E1, is connected with the entrance of middle pressure heat exchanger E2, is connected with the entrance of low pressure heat exchanger E3 by the 5th stop valve V5 by the 4th stop valve V4.
Be in series with successively the 8th stop valve V8 and high pressure drain valve Vt1 on the high pressure draining pipe W1 of high pressure heat exchanger E1 outlet, the outlet of high pressure drain valve Vt1 is by pressing the entrance of heat exchanger E2 in the first recycling condensing water pipe W4 and the 6th stop valve V6 access.
Be in series with successively the tenth stop valve V10 and middle pressure drain valve Vt2 on the middle pressure drain pipe W2 of middle pressure heat exchanger E2 outlet, the outlet of middle pressure drain valve Vt2 is by the entrance of the second recycling condensing water pipe W5 and the 7th stop valve V7 access low pressure heat exchanger E3.
The low pressure drain pipe W3 of low pressure heat exchanger E3 outlet is provided with low pressure drain valve Vt3, the entrance of the outlet access condensate pump P1 of low pressure drain valve Vt3.Between the entrance of the 8th stop valve V8 and the tenth stop valve V10, cross-over connection has the 9th stop valve V9, and between the entrance of the tenth stop valve V10 and low pressure drain valve Vt3, cross-over connection has the 11 stop valve V11.
The front and back of high pressure drain valve Vt1, middle pressure drain valve Vt2 and low pressure drain valve Vt3 are in series with respectively front stop valve and rear stop valve, are parallel with the bypass cutoff valve between the entrance of front stop valve and the outlet of rear stop valve.
When Product Process need to use high steam, open the first stop valve V1, the 6th stop valve V6, the 7th stop valve V7, the 8th stop valve V8 and the tenth stop valve V10, close simultaneously the second stop valve V2, the 3rd stop valve V3, the 4th stop valve V4, the 5th stop valve V5, the 9th stop valve V9 and the 11 stop valve V11; What this moment, high pressure heat exchanger E1 used is the high steam of outer confession, and the high pressure condensed water that high pressure heat exchanger E1 produces is dredged out through the 8th stop valve V8 and high pressure drain valve Vt1, then enters middle pressure heat exchanger E2 through the first recycling condensing water pipe W4 and the 6th stop valve V6.in the flash distillation due to dilatation of middle pressure heat exchanger E2 mesohigh condensed water, the condensed water pressure drop, condensation rapidly after flash steam and air heat-exchange release latent heat, the condensed water of the condensed water of flash distillation and pressure drop and time condensation does not become middle pressure condensed water after continuing to discharge sensible heat in middle pressure heat exchanger E2, middle pressure condensed water is dredged out through the tenth stop valve V10 and middle pressure drain valve Vt2, enter low pressure heat exchanger E3 through the second recycling condensing water pipe W5 and the 7th stop valve V7 again, during controlling, middle pressure drain valve Vt2 press the flow of condensed water to guarantee condensed water and the pre-sufficient exchange heat of hot blast.In low pressure heat exchanger E3, the flash distillation again due to dilatation of middle pressure condensed water, condensed water pressure further descends, condensation rapidly after flash steam and air heat-exchange release latent heat, the condensed water of the condensed water that further descends of flash distillation and pressure and three condensations does not continue to discharge in low pressure heat exchanger E3 becomes the low pressure condensed water after sensible heat and dredges out from low pressure drain valve Vt3, and the flow that low pressure drain valve Vt3 controls the low pressure condensed water is to guarantee condensed water and the sufficient exchange heat of hot blast in advance.
When Product Process need to use middle pressure steam, open the second stop valve V2, the 4th stop valve V4, the 7th stop valve V7, the 9th stop valve V9 and the tenth stop valve V10, close simultaneously the first stop valve V1, the 3rd stop valve V3, the 5th stop valve V5, the 6th stop valve V6, the 8th stop valve V8 and the 11 stop valve V11, this moment, high pressure heat exchanger E1 and middle pressure heat exchanger E2 all used the middle pressure steam of outer confession.the middle pressure condensed water that high pressure heat exchanger E1 produces is after the 9th stop valve V9 discharges, jointly dredge out through the tenth stop valve V10 and middle pressure drain valve Vt2 with the middle pressure condensed water that middle pressure heat exchanger E2 produces, middle pressure condensed water enters low pressure heat exchanger E3 through the second recycling condensing water pipe W5 and the 7th stop valve V7 again, in low pressure heat exchanger E3, the flash distillation due to dilatation of middle pressure condensed water, the condensed water pressure drop, condensation rapidly after flash steam and air heat-exchange release latent heat, the condensed water of the condensed water of flash distillation and pressure drop and time condensation does not continue to discharge in low pressure heat exchanger E3 becomes the low pressure condensed water after sensible heat and dredges out from low pressure drain valve Vt3, low pressure drain valve Vt3 controls the flow of low pressure condensed water to guarantee condensed water and the pre-sufficient exchange heat of hot blast.
When Product Process need to use low-pressure steam, open the 3rd stop valve V3, the 4th stop valve V4, the 5th stop valve V5, the 9th stop valve V9 and the 11 stop valve V11, close simultaneously the first stop valve V1, the second stop valve V2, the 6th stop valve V6, the 7th stop valve V7, the 8th stop valve V8 and the tenth stop valve V10, high pressure heat exchanger E1, middle pressure heat exchanger E2 and low pressure heat exchanger E3 all use the low-pressure steam of outer confession at this moment.The low pressure condensed water that high pressure heat exchanger E1 produces is dredged out through the 9th stop valve V9, the 11 stop valve V11 and low pressure drain valve Vt3, the low pressure condensed water that middle pressure heat exchanger E2 produces is dredged out through the 11 stop valve V11 and low pressure drain valve Vt3, and the low pressure condensed water that low pressure heat exchanger E3 produces is directly dredged out through low pressure drain valve Vt3.
The above only is the present invention's better possible embodiments, and is non-so limit to scope of patent protection of the present invention.In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of requirement of the present invention.
Claims (3)
- one kind hydrophobic and air exhaust waste heat utilizes loosening heat setting machine without return air classification heat exchange, the cabinets cavity of loosening heat setting machine is provided with blower fan, heat exchanger reaches the drying chamber that product is carried out shaping and drying, the inlet scoop of described blower fan communicates with wind-supplying mouth on casing, the air outlet of blower fan is aimed at the heat exchanger of top, the air outlet of described heat exchanger top enters described drying chamber, the drying chamber below is provided with exhaust outlet, described exhaust outlet leads to outside casing by exhaust duct, it is characterized in that: also comprise the fresh air preheating device, the below of described fresh air preheating device is provided with new wind entrance, the top of fresh air preheating device is provided with pre-hot blast outlet, the exhaust duct access fresh air preheating device of loosening heat setting machine makes air draft and new wind carry out indirect heat exchange, the described wind-supplying mouth of the pre-hot blast outlet access loosening heat setting machine of described fresh air preheating device, described heat exchanger comprises from top to bottom stacked successively high pressure heat exchanger, middle pressure heat exchanger and low pressure heat exchanger, the entrance of described high pressure heat exchanger is connected with main feed header, the outlet access high pressure drain valve of described high pressure heat exchanger, the outlet of described high pressure drain valve is by the entrance of the first described middle pressure heat exchanger of recycling condensing water pipe access, press drain valve in the outlet access of middle pressure heat exchanger, the outlet of middle pressure drain valve is by the entrance of the second described low pressure heat exchanger of recycling condensing water pipe access, and the low pressure heat exchanger exit is by low pressure drain valve access condensate pump.
- 2. according to claim 1 hydrophobic and air exhaust waste heat utilizes loosening heat setting machine without return air classification heat exchange, and it is characterized in that: high-pressure steam pipe, middle pressure steam pipe and low pressure steam pipe are connected with main feed header by the first stop valve, the second stop valve and the 3rd stop valve respectively; Described main feed header directly is connected with the entrance of described high pressure heat exchanger, is connected with the entrance of described middle pressure heat exchanger, is connected with the entrance of described low pressure heat exchanger by the 5th stop valve by the 4th stop valve; Described the first recycling condensing water pipe is provided with the 6th stop valve, and the outlet of described the 6th stop valve also is connected with the entrance of described middle pressure heat exchanger; Described the second recycling condensing water pipe is provided with the 7th stop valve, and the outlet of described the 7th stop valve also is connected with the entrance of described low pressure heat exchanger; The outlet of described high pressure heat exchanger is provided with the 8th stop valve, and the rear of described the 8th stop valve is in series with described high pressure drain valve; The outlet of described middle pressure heat exchanger is provided with the tenth stop valve, and the rear of described the tenth stop valve is in series with described middle pressure drain valve; Between the entrance of described the 8th stop valve and described the tenth stop valve, cross-over connection has the 9th stop valve, and between the entrance of described the tenth stop valve and described low pressure drain valve, cross-over connection has the 11 stop valve.
- It is 3. according to claim 1 and 2 that hydrophobic and air exhaust waste heat utilizes loosening heat setting machine without return air classification heat exchange, it is characterized in that: the front and back of described high pressure drain valve, middle pressure drain valve and low pressure drain valve are in series with respectively front stop valve and rear stop valve, are parallel with the bypass cutoff valve between the entrance of described front stop valve and the outlet of rear stop valve.
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| CN201310025605.1A CN103088510B (en) | 2013-01-22 | 2013-01-22 | Non-return-air classification heat exchange dewatering and air exhaust waste heat utilization relaxation heat setting machine |
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| CN201310025605.1A CN103088510B (en) | 2013-01-22 | 2013-01-22 | Non-return-air classification heat exchange dewatering and air exhaust waste heat utilization relaxation heat setting machine |
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