CN204255130U - Oil plant pretreatment high-temp waste gas bootstrap system - Google Patents
Oil plant pretreatment high-temp waste gas bootstrap system Download PDFInfo
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- CN204255130U CN204255130U CN201420686435.1U CN201420686435U CN204255130U CN 204255130 U CN204255130 U CN 204255130U CN 201420686435 U CN201420686435 U CN 201420686435U CN 204255130 U CN204255130 U CN 204255130U
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Abstract
The utility model relates to a kind of oil plant pretreatment high-temp waste gas bootstrap system, fan outlet is connected with air heater air inlet, air heater air outlet is connected with oil plant cooler air inlet, oil plant cooler air outlet is connected with cyclone air inlet, water fender is provided with successively below the gas outlet on top, used heat absorption tower, main jet shower pipe, packing layer, primary air inlet and water collecting bin, primary air inlet is connected with cyclone air outlet, outlet pipe is connected with in the middle part of water collecting bin, outlet pipe is connected with circulating pump suction inlet, circulating-pump outlet is connected with the shower water import of shell-and-tube heat exchanger, the shower water outlet of shell-and-tube heat exchanger is connected with spray house steward, spray house steward is connected with main jet shower pipe entrance.Used heat absorber tower cylinder bottom is connected with injection vacuum tube, and the upper end center spraying vacuum tube is provided with jet pipe, and upper end sidewall is connected with exhaust tube.This system thermal rate of recovery is high, and self energy consumption is low, and the gas that workshop multiple spot can also be distributed sucks in tower.
Description
Technical field
The utility model relates to a kind of oil plant pretreatment high-temp waste gas bootstrap system, belongs to technical field of waste heat utilization.
Background technology
Oil plant pretreatment workshop is provided with blower fan, air heater, oil plant cooler, cyclone and horizontal hot air trap, the air outlet of blower fan is connected with the air inlet of air heater, the air outlet of air heater is connected with the air inlet of oil plant cooler, and the air outlet of oil plant cooler is connected with the air inlet of cyclone deduster.The oil plant of expanded latter about 120 DEG C needs to utilize air to cool it in oil plant cooler, and the temperature of cooling air can not be too low, otherwise easily cause moisture to separate out.Natural air is warming up to 50 DEG C ~ 60 DEG C through air heater, then enter the oil plant of oil plant cooler to high temperature to cool, the oil plant of expanded latter about 120 DEG C enters from the upper end charging aperture of oil plant cooler, the air sent here with air heater in oil plant cooler after carrying out heat exchange discharging opening from below discharge, after the heat of the expanded oil plant of absorption of air, self be warming up to more than 85 DEG C and become high temperature air, high temperature air discharges after entering cyclone dedusting.
Owing to containing a large amount of heat energy in the hot blast of discharge, should be reclaimed, otherwise not only be caused a large amount of energy wastes, also can be caused very large thermal pollution.In addition, during drag conveyor convey materials, usually have the gas overflowing with peculiar smell, directly discharge is comparatively large on surrounding enviroment impact, discharges after needing deodorizing.
House exhaust heat-energy recovering apparatus of the prior art generally adopts horizontal hot air trap, horizontal hot air trap comprises multi-stage spray device, hot blast enters from the air intake of horizontal hot air trap, successively through multi-stage spray device, then discharges from the outlet air end of horizontal hot air trap.Due to the water of spray equipment ejection and time of contact of waste gas very of short duration, make heat exchange efficiency between the two not high.Still have a large amount of heats with toxic emission through multi-stage spray on the one hand, multi-stage spray device needs configuration multiple stage spray pump on the other hand, and power consumption is very large, and equipment maintenance cost is high.
Utility model content
The purpose of this utility model is, overcomes problems of the prior art, provides a kind of oil plant pretreatment high-temp waste gas bootstrap system, and the efficiency of recovery heat is high and self energy consumption is low.
For solving above technical problem, a kind of oil plant pretreatment high-temp waste gas bootstrap system of the present utility model, comprise blower fan, air heater, oil plant cooler and cyclone, the air outlet of described blower fan is connected with the air inlet of described air heater, the air outlet of described air heater is connected with the air inlet of described oil plant cooler, the air outlet of described oil plant cooler is connected with the air inlet of described cyclone, also comprise used heat absorption tower, the cylinder top on described used heat absorption tower is provided with gas outlet, used heat absorption tower, described used heat absorption tower is provided with water fender below gas outlet, main jet shower pipe is provided with below described water fender, packing layer is provided with below described main jet shower pipe, cylinder lateral wall below described packing layer is provided with used heat absorption tower primary air inlet, described used heat absorption tower primary air inlet is connected with the air outlet of described cyclone, the bottom of described cylindrical shell is provided with water collecting bin, described water collecting bin sidewall is connected with used heat absorption tower outlet pipe, described used heat absorption tower outlet pipe is connected with the suction inlet of spray pump, described spray delivery side of pump is connected with the shower water import of shell-and-tube heat exchanger, the shower water outlet of described shell-and-tube heat exchanger is connected with spray house steward, described spray house steward is connected with the entrance of described main jet shower pipe.
Relative to prior art, the utility model achieves following beneficial effect: the high temperature waste hot gas that cyclone is discharged enters the bottom on used heat absorption tower from used heat absorption tower primary air inlet, upwards flow through packing layer from bottom to top, the cold water of main jet shower pipe ejection is spread in uniform on filler and along the gap of filler and flows downward, in packing layer, hot gas and cold water form countercurrent flow, because water is tortuous descending and form moisture film in packing layer, specific area is very large, so when hot blast is up along the gap of packing layer, sufficient hot and humid area can be carried out with water, and absorb carry secretly in hot blast have gas with foreign flavor, packing layer, compared to the heat transfer of multi-stage spray formula, adds vapour-liquid contact area, is conducive to deodorization, improves heat recovery rate.After the heat of hot gas passes to cold water, be upward through water fender, then discharge from gas outlet, used heat absorption tower, the temperature of waste gas is minimized and can removes the peculiar smell in waste gas.Cold water becomes hot water after absorbing the heat of hot gas, fall into the water collecting bin of below, hot water in water collecting bin is extracted out by spray pump, deliver to shell-and-tube heat exchanger indirect heat exchange, again cold water is become after release heat, discharge from the shower water outlet of shell-and-tube heat exchanger, enter spray house steward, be delivered to main jet shower pipe by spray house steward and again spray.The middle part of water collecting bin short transverse arranges used heat absorption tower outlet pipe, and the dirt that bottom can be avoided to gather directly enters spray pump, and the dirt gathered bottom water collecting bin can regularly be discharged from the sewage draining exit of bottommost.The utility model not only heat transfer efficiency is high, can reclaim the most heats in high temperature waste hot gas, and only needs a spray pump, reduces the power consumption of self.
As preferred version of the present utility model, described packing layer comprises metal Pall ring filler layer and anti-stifled packing layer, and described anti-stifled packing layer is positioned at below described metal Pall ring filler layer.Because the gas just entering used heat absorption tower is often impure, easily block filler, first through anti-stifled packing layer, then enter metal Pall ring filler layer; Anti-stifled packing layer not only can stop to fall impurity in waste gas and self be not easy blocking, and clean gas enters the higher metal Pall ring filler layer of heat exchange efficiency again, carries out further heat exchange.
As preferred version of the present utility model, be provided with pre-shower below described anti-stifled packing layer, described pre-shower is positioned at above the primary air inlet of described used heat absorption tower, and the entrance of described pre-shower sprays house steward be connected with described.Pre-shower sprays along the cross-sectional uniformity of cylindrical shell, can most of impurity in trap exhaust, reduces the impurity level entering packing layer.
As preferred version of the present utility model, the cylindrical shell bottom on described used heat absorption tower is provided with used heat absorption tower auxilairy air intake, described used heat absorption tower auxilairy air intake and described used heat absorption tower primary air inlet are positioned at circumferentially same, described used heat absorption tower auxilairy air intake is connected with injection vacuum tube, the middle part of described injection vacuum tube is provided with the throat of undergauge, the upper end closed of described injection vacuum tube and be provided with jet pipe, the upper end of described jet pipe sprays house steward be connected with described, the lower end of described jet pipe is provided with spout, the upper end sidewall of described injection vacuum tube is connected with exhaust tube, described exhaust tube is connected with the excessive gas port of drag conveyor.Because the excessive gas of drag conveyor is unpowered air draft, utilize the water outlet of spray pump to enter and spray in vacuum tube and spray, the excessive aspiration of drag conveyor can enter in tower by the negative pressure formed by water-jet, can save blower fan.
As preferred version of the present utility model, described used heat absorption tower primary air inlet is provided with deflector uniform stream being distributed in cylindrical shell cross-sectional direction.Deflector contributes to making packing layer uniform heat exchange on whole cross section.
As preferred version of the present utility model, the entrance of described spray pump or outlet conduit are provided with filter.Filter can filter out the impurity in water, avoids sewage to enter spray house steward and packing layer, plug nozzle and filler.
As improvement of the present utility model, also comprise air preheater, the air outlet of described blower fan is connected with the air inlet of described air preheater, and the air outlet of described air preheater is connected with the air inlet of described air heater; Shower water and indirect heat exchange of purifying waste water in described shell-and-tube heat exchanger, the treated water outlet of described shell-and-tube heat exchanger is connected with the entrance of water purification surge tank, the outlet of described water purification surge tank is connected with the entrance of water purification circulating pump, described water purification circulation delivery side of pump is connected with the water inlet of described air preheater, and the delivery port of described air preheater is connected with the entrance of purifying waste water of described shell-and-tube heat exchanger.Natural air, after blower fan is sent, is introduced into air preheater and carries out preheating, and in air preheater, air is raised with temperature after indirect heat exchange of purifying waste water, then enters air heater and heat up further, can reduce the thermal energy consumption of air heater; If the air themperature of air preheater outlet has met the requirement entering oil plant cooler, the thermal source of air heater can be closed; To purify waste water in air preheater after release heat, temperature reduces, enter the entrance of purifying waste water of shell-and-tube heat exchanger again, in shell-and-tube heat exchanger, purify waste water and shower water indirect heat exchange, purify waste water and absorb the heat of shower water, temperature raises, enter water purification surge tank, more again send into air preheater by water purification circulating pump preheating is carried out to air, so circulate.
As further improvement of the utility model, steam(-)coil is provided with in described air heater, the entrance of described steam(-)coil is connected with steam pipe, the outlet of described steam(-)coil is provided with drain valve, the outlet of described drain valve is connected with the condensing water inlet of condensed water heat exchanger, the condensation-water drain access condensation water recovery system of described condensed water heat exchanger, the entrance of purifying waste water of described condensed water heat exchanger is connected with described water purification circulation delivery side of pump, and the treated water outlet of described condensed water heat exchanger is connected with the water inlet of described air preheater.The temperature of purifying waste water that the temperature of steam condensate (SC) of air heater discharge export higher than shell-and-tube heat exchanger, and the steam condensate (SC) of high temperature in flow process easily because of pressure drop generation flash-off steam, cause vapour locking and pipe vibration; The steam condensate (SC) discharged by air heater sends into condensed water heat exchanger, in condensed water heat exchanger, steam condensate (SC) carries out indirect heat exchange, after steam condensate (SC) release heat with purifying waste water, temperature reduces, and enters condensation water recovery system and sends boiler room back to or reclaim separately; After the heat of the absorption steam condensate (SC) release of purifying waste water of water purification circulating-pump outlet, temperature raises, and then enters air preheater, natural air can be made to heat up higher.
As improvement of the present utility model, oil removing foam device is provided with between described cyclone and described used heat absorption tower, the air outlet of described cyclone is connected with the air inlet of described oil removing foam device, and the air outlet of described oil removing foam device is connected with described used heat absorption tower primary air inlet.Not only containing dust but also containing a certain amount of oily foam from the air that oil plant cooler is discharged, cyclone can only remove immobilized particles, still containing oily foam from the hot blast that cyclone is discharged, oil removing foam device can remove the oily foam in hot blast, avoids oily foam to block the packing layer on used heat absorption tower.
As further improvement of the utility model, the bottom of described oil removing foam device is provided with catch tray, the ventilation section on described oil removing foam device top is provided with twice many foldings waveform liquid barrier, many folding waveform liquid barriers described in twice are parallel to each other and respectively near air inlet and the air outlet of described oil removing foam device, the corner of each described many folding waveform liquid barriers is respectively equipped with gear liquid hook, and the opening of each described gear liquid hook is respectively towards the side of air intake.Front and back arrange twice many foldings waveform liquid barrier, and the corner of many folding waveform liquid barriers is provided with gear liquid hook, and the liquid phase substance in hot blast can be ensured all to remove, and the oily foam rolled under waveform liquid barrier gear falls into the catch tray of below more; Be cavity between twice many foldings waveform liquid barrier, the resistance of hot blast by oil removing foam device can be reduced.
Accompanying drawing explanation
Be described in further detail the utility model below in conjunction with the drawings and specific embodiments, accompanying drawing only provides reference and explanation use, is not used to limit the utility model.
Fig. 1 is the flow chart of the utility model oil plant pretreatment high-temp waste gas bootstrap system.
Fig. 2 is the enlarged drawing at position, used heat absorption tower in Fig. 1.
Fig. 3 is the front view of oil removing foam device in Fig. 1.
Fig. 4 is the top view of Fig. 3.
In figure: 1. blower fan; 2. air preheater; 3. air heater; 3a. drain valve; 4. oil plant cooler; 5. cyclone; 6. oil removing foam device; 6a. many foldings waveform liquid barrier; 6a1. keeps off liquid hook; 6b. catch tray; 7. used heat absorption tower; Gas outlet, 7a. used heat absorption tower; 7b. water fender; 7c. main jet shower pipe; 7d. metal Pall ring filler layer; The anti-stifled packing layer of 7e.; The pre-shower of 7f.; 7g. used heat absorption tower primary air inlet; 7h. deflector; 7j. used heat absorption tower auxilairy air intake; 7k. water collecting bin; 7m. used heat absorption tower outlet pipe; 7n. used heat absorption tower leg; 8. spray vacuum tube; 9. exhaust tube; 10. jet pipe; 11. filters; 12. spray pumps; 13. shell-and-tube heat exchangers; 14. spray house stewards; 15. drag conveyors; 16. water purification surge tanks; 17. water purification circulating pumps; 18. condensed water heat exchangers; 19. condensation water recovery systems.
Detailed description of the invention
As shown in Figures 1 and 2, oil plant pretreatment high-temp waste gas bootstrap system of the present utility model comprises blower fan 1, air heater 3, oil plant cooler 4, cyclone 5, used heat absorption tower 7, spray pump 12 and shell-and-tube heat exchanger 13.The air outlet of blower fan 1 is connected with the air inlet of air heater 3, and the air outlet of air heater 3 is connected with the air inlet of oil plant cooler 4, and the air outlet of oil plant cooler 4 is connected with the air inlet of cyclone 5.
Natural air is warming up to 50 DEG C ~ 60 DEG C through air heater, then enter the oil plant of oil plant cooler to high temperature to cool, the oil plant of expanded latter about 120 DEG C enters from the upper end charging aperture of oil plant cooler, the air sent here with air heater in oil plant cooler after carrying out heat exchange discharging opening from below discharge, after the heat of the expanded oil plant of absorption of air, self be warming up to more than 85 DEG C and become high temperature air, high temperature air enters cyclone dedusting.Cyclone comprises cyclone cylinder and dust hopper, and cyclone cylinder is positioned at dust hopper upper end, and cyclone cylinder utilizes the principle of centrifugation to be removed by the dust in hot blast.
The cylinder top on used heat absorption tower 7 is provided with used heat absorption tower gas outlet 7a, water fender 7b is provided with below the gas outlet 7a of used heat absorption tower, main jet shower pipe 7c is provided with below water fender 7b, packing layer is provided with below main jet shower pipe 7c, cylinder lateral wall below packing layer is provided with used heat absorption tower primary air inlet 7g, used heat absorption tower primary air inlet 7g is connected with cyclone outlet, the bottom of cylindrical shell is provided with water collecting bin 7k, water collecting bin 7k sidewall is connected with used heat absorption tower outlet pipe 7m, used heat absorption tower outlet pipe 7m is connected with the suction inlet of spray pump 12, the outlet of spray pump 12 is connected with the shower water import of shell-and-tube heat exchanger 13, the shower water outlet of shell-and-tube heat exchanger 13 is connected with spray house steward 14, spray house steward 14 is connected with the entrance of main jet shower pipe 7c.Be provided with used heat absorption tower leg 7n below cylindrical shell, cylinder lateral wall is provided with cat ladder.
The high temperature waste hot gas that cyclone 5 is discharged enters the bottom on used heat absorption tower 7 from used heat absorption tower primary air inlet 7g, upwards flow through packing layer from bottom to top, the cold water that main jet shower pipe 7c sprays is spread in uniform on filler and along the gap of filler and flows downward, in packing layer, hot gas and cold water form countercurrent flow, because water is tortuous descending and form moisture film in packing layer, specific area is very large, so when hot blast is up along the gap of packing layer, can carry out sufficient hot and humid area with water; Packing layer, compared to the heat transfer of multi-stage spray formula, adds vapour-liquid contact area, improves heat recovery rate.After the heat of hot gas passes to cold water, be upward through water fender 7b, then discharge from used heat absorption tower gas outlet 7a, the temperature of waste gas is minimized and can removes the peculiar smell in waste gas.Cold water becomes hot water after absorbing the heat of hot gas, fall into the water collecting bin 7k of below, hot water in water collecting bin 7k is extracted out by spray pump 12, deliver to shell-and-tube heat exchanger 13 indirect heat exchange, again cold water is become after release heat, discharge from the shower water outlet of shell-and-tube heat exchanger 13, enter spray house steward 14, be delivered to main jet shower pipe 7c by spray house steward 14 and again spray.The utility model not only heat transfer efficiency is high, can reclaim the most heats in waste heat gas, and only needs a spray pump 12, reduces the power consumption of self.
Packing layer comprises metal Pall ring filler layer 7d and anti-stifled packing layer 7e, and anti-stifled packing layer 7e is positioned at below metal Pall ring filler layer 7d.Because the gas just entering used heat absorption tower 7 is often impure, easily block filler, first through anti-stifled packing layer 7e, then enter metal Pall ring filler layer 7d; Anti-stifled packing layer 7e not only can stop to fall impurity in waste gas and self be not easy blocking, and clean gas enters the higher metal Pall ring filler layer 7d of heat exchange efficiency again, carries out further heat exchange.
Be provided with pre-shower 7f below anti-stifled packing layer 7e, pre-shower 7f is positioned at above the primary air inlet 7g of used heat absorption tower, and the entrance of pre-shower 7f is connected with spray house steward 14.Pre-shower 7f sprays along the cross-sectional uniformity of cylindrical shell, can most of impurity in trap exhaust, reduces the impurity level entering packing layer.
Used heat absorption tower primary air inlet 7g is provided with deflector 7h uniform stream being distributed in cylindrical shell cross-sectional direction, and deflector 7h contributes to making packing layer uniform heat exchange on whole cross section.
The entrance of spray pump 12 or outlet conduit are provided with filter 11.Filter 11 can filter out the impurity in water, avoids sewage to enter spray house steward 14 and packing layer.
The cylindrical shell bottom on used heat absorption tower 7 can be provided with used heat absorption tower auxilairy air intake 7j, used heat absorption tower auxilairy air intake 7j and used heat absorption tower primary air inlet 7g is positioned at circumferentially same, used heat absorption tower auxilairy air intake 7j is connected with and sprays vacuum tube 8, the middle part of spraying vacuum tube 8 is provided with the throat of undergauge, spray the upper end closed of vacuum tube 8 and jet pipe 10 is installed, the upper end of jet pipe 10 is connected with spray house steward 14, the lower end of jet pipe 10 is provided with spout, and the upper end sidewall spraying vacuum tube 8 is connected with exhaust tube 9.For the excessive gas of the such as drag conveyor 15 of the unpowered air draft in workshop, utilize the water outlet of spray pump 12 to enter and spray in vacuum tube 8 and spray, the gas that the excessive gas of drag conveyor 15 or workshop multiple spot can be distributed by the negative pressure of water-jet formation sucks in tower, can save blower fan.
As improvement, oil plant pretreatment high-temp waste gas bootstrap system of the present utility model can also comprise air preheater 2, and the air outlet of blower fan 1 is connected with the air inlet of air preheater 2, and the air outlet of air preheater 2 is connected with the air inlet of air heater 3; Shower water and indirect heat exchange of purifying waste water in shell-and-tube heat exchanger, the treated water outlet of shell-and-tube heat exchanger is connected with the entrance of water purification surge tank 16, the outlet of water purification surge tank 16 is connected with the entrance of water purification circulating pump 17, the outlet of water purification circulating pump 17 is connected with the water inlet of air preheater 2, and the delivery port of air preheater 2 is connected with the entrance of purifying waste water of shell-and-tube heat exchanger.Natural air is after blower fan 1 is sent, be introduced into air preheater 2 and carry out preheating, in air preheater 2, air is raised with temperature after indirect heat exchange of purifying waste water, enter air heater 3 again to heat up further, the thermal energy consumption of air heater 3 can be reduced; If the air themperature that air preheater 2 exports has met the requirement entering oil plant cooler 4, the thermal source of air heater 3 can be closed; To purify waste water in air preheater 2 after release heat, temperature reduces, enter the entrance of purifying waste water of shell-and-tube heat exchanger again, in shell-and-tube heat exchanger, purify waste water and shower water indirect heat exchange, purify waste water and absorb the heat of shower water, temperature raises, enter water purification surge tank 16, more again send into air preheater 2 pairs of air by water purification circulating pump 17 and carry out preheating, so circulate.
As improvement, steam(-)coil is provided with in air heater 3, the entrance of steam(-)coil is connected with steam pipe, the outlet of steam(-)coil is provided with drain valve 3a, the outlet of drain valve 3a is connected with the condensing water inlet of condensed water heat exchanger 18, the condensation-water drain access condensation water recovery system 19 of condensed water heat exchanger 18, the entrance of purifying waste water of condensed water heat exchanger 18 is connected with the outlet of water purification circulating pump 17, and the treated water outlet of condensed water heat exchanger 18 is connected with the water inlet of air preheater 2.The temperature of purifying waste water that the temperature of steam condensate (SC) that air heater 3 discharges export higher than shell-and-tube heat exchanger, and the steam condensate (SC) of high temperature in flow process easily because of pressure drop generation flash-off steam, cause vapour locking and pipe vibration; The steam condensate (SC) discharged by air heater 3 sends into condensed water heat exchanger 18, in condensed water heat exchanger 18, steam condensate (SC) carries out indirect heat exchange, after steam condensate (SC) release heat with purifying waste water, temperature reduces, and enters condensation water recovery system 19 and sends boiler room back to or reclaim separately; After the heat of the absorption steam condensate (SC) release of purifying waste water of water purification circulating pump 17 outlet, temperature raises, and then enters air preheater 2, natural air can be made to heat up higher.
From the air that oil plant cooler 4 is discharged, not only contain dust but also contain a certain amount of oily foam, cyclone 5 can only remove immobilized particles, still containing oily foam from the hot blast that cyclone 5 is discharged.As improvement, oil removing foam device 6 is provided with between cyclone 5 and used heat absorption tower 7, the air outlet of cyclone 5 is connected with the air inlet of oil removing foam device 6, the air outlet of oil removing foam device 6 is connected with used heat absorption tower primary air inlet, oil removing foam device 6 can remove the oily foam in hot blast, avoids oily foam to block the packing layer on used heat absorption tower 7.
As shown in Figure 3, Figure 4, the bottom of oil removing foam device 6 is provided with catch tray 6b, the ventilation section on oil removing foam device 6 top is provided with twice many foldings waveform liquid barrier 6a, twice many foldings waveform liquid barrier 6a is parallel to each other and respectively near air inlet and the air outlet of oil removing foam device 6, the corner of each many folding waveform liquid barrier 6a is respectively equipped with gear liquid hook 6a1, and the opening of each gear liquid hook 6a1 is respectively towards the side of air intake.Front and back arrange twice many foldings waveform liquid barrier 6a, and the corner of many folding waveform liquid barrier 6a is provided with gear liquid hook 6a1, the liquid phase substance in hot blast can be ensured all to remove, oily foam under many foldings waveform liquid barrier 6a keeps off falls into the catch tray 6b of below, be cavity between twice many foldings waveform liquid barrier 6a, the resistance of hot blast by oil removing foam device 6 can be reduced.
The foregoing is only the better possible embodiments of the utility model, non-ly therefore limit to scope of patent protection of the present utility model.In addition to the implementation, the utility model 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 the utility model requirement.The utility model can pass through without the technical characteristic described or adopt existing techniques in realizing, does not repeat them here.
Claims (10)
1. an oil plant pretreatment high-temp waste gas bootstrap system, comprise blower fan, air heater, oil plant cooler and cyclone, the air outlet of described blower fan is connected with the air inlet of described air heater, the air outlet of described air heater is connected with the air inlet of described oil plant cooler, the air outlet of described oil plant cooler is connected with the air inlet of described cyclone, it is characterized in that: also comprise used heat absorption tower, the cylinder top on described used heat absorption tower is provided with gas outlet, used heat absorption tower, described used heat absorption tower is provided with water fender below gas outlet, main jet shower pipe is provided with below described water fender, packing layer is provided with below described main jet shower pipe, cylinder lateral wall below described packing layer is provided with used heat absorption tower primary air inlet, described used heat absorption tower primary air inlet is connected with the air outlet of described cyclone, the bottom of described cylindrical shell is provided with water collecting bin, described water collecting bin sidewall is connected with used heat absorption tower outlet pipe, described used heat absorption tower outlet pipe is connected with the suction inlet of spray pump, described spray delivery side of pump is connected with the shower water import of shell-and-tube heat exchanger, the shower water outlet of described shell-and-tube heat exchanger is connected with spray house steward, described spray house steward is connected with the entrance of described main jet shower pipe.
2. oil plant pretreatment high-temp waste gas bootstrap system according to claim 1, is characterized in that: described packing layer comprises metal Pall ring filler layer and anti-stifled packing layer, and described anti-stifled packing layer is positioned at below described metal Pall ring filler layer.
3. oil plant pretreatment high-temp waste gas bootstrap system according to claim 1, it is characterized in that: below described anti-stifled packing layer, be provided with pre-shower, described pre-shower is positioned at above the primary air inlet of described used heat absorption tower, and the entrance of described pre-shower sprays house steward be connected with described.
4. oil plant pretreatment high-temp waste gas bootstrap system according to claim 1, it is characterized in that: the cylindrical shell bottom on described used heat absorption tower is provided with used heat absorption tower auxilairy air intake, described used heat absorption tower auxilairy air intake and described used heat absorption tower primary air inlet are positioned at circumferentially same, described used heat absorption tower auxilairy air intake is connected with injection vacuum tube, the middle part of described injection vacuum tube is provided with the throat of undergauge, the upper end closed of described injection vacuum tube and be provided with jet pipe, the upper end of described jet pipe sprays house steward be connected with described, the lower end of described jet pipe is provided with spout, the upper end sidewall of described injection vacuum tube is connected with exhaust tube, described exhaust tube is connected with the excessive gas port of drag conveyor.
5. oil plant pretreatment high-temp waste gas bootstrap system according to claim 1, is characterized in that: described used heat absorption tower primary air inlet is provided with deflector uniform stream being distributed in cylindrical shell cross-sectional direction.
6. oil plant pretreatment high-temp waste gas bootstrap system according to claim 1, is characterized in that: the entrance of described spray pump or outlet conduit are provided with filter.
7. oil plant pretreatment high-temp waste gas bootstrap system according to any one of claim 1 to 6, it is characterized in that: also comprise air preheater, the air outlet of described blower fan is connected with the air inlet of described air preheater, and the air outlet of described air preheater is connected with the air inlet of described air heater; Shower water and indirect heat exchange of purifying waste water in described shell-and-tube heat exchanger, the treated water outlet of described shell-and-tube heat exchanger is connected with the entrance of water purification surge tank, the outlet of described water purification surge tank is connected with the entrance of water purification circulating pump, described water purification circulation delivery side of pump is connected with the water inlet of described air preheater, and the delivery port of described air preheater is connected with the entrance of purifying waste water of described shell-and-tube heat exchanger.
8. oil plant pretreatment high-temp waste gas bootstrap system according to claim 7, it is characterized in that: in described air heater, be provided with steam(-)coil, the entrance of described steam(-)coil is connected with steam pipe, the outlet of described steam(-)coil is provided with drain valve, the outlet of described drain valve is connected with the condensing water inlet of condensed water heat exchanger, the condensation-water drain access condensation water recovery system of described condensed water heat exchanger, the entrance of purifying waste water of described condensed water heat exchanger is connected with described water purification circulation delivery side of pump, the treated water outlet of described condensed water heat exchanger is connected with the water inlet of described air preheater.
9. oil plant pretreatment high-temp waste gas bootstrap system according to claim 1, it is characterized in that: between described cyclone and described used heat absorption tower, be provided with oil removing foam device, the air outlet of described cyclone is connected with the air inlet of described oil removing foam device, and the air outlet of described oil removing foam device is connected with described used heat absorption tower primary air inlet.
10. oil plant pretreatment high-temp waste gas bootstrap system according to claim 9, it is characterized in that: the bottom of described oil removing foam device is provided with catch tray, the ventilation section on described oil removing foam device top is provided with twice many foldings waveform liquid barrier, many folding waveform liquid barriers described in twice are parallel to each other and respectively near air inlet and the air outlet of described oil removing foam device, the corner of each described many folding waveform liquid barriers is respectively equipped with gear liquid hook, and the opening of each described gear liquid hook is respectively towards the side of air intake.
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| CN114147030A (en) * | 2021-11-23 | 2022-03-08 | 神马实业股份有限公司 | Direct exhaust tail gas recycling system for nylon 66 continuous polycondensation device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114147030A (en) * | 2021-11-23 | 2022-03-08 | 神马实业股份有限公司 | Direct exhaust tail gas recycling system for nylon 66 continuous polycondensation device |
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