CN205948390U - System for waste heat that utilizes desiccator carries out evaporative concentration - Google Patents

Abstract

The utility model relates to a system for waste heat that utilizes desiccator carries out evaporative concentration, include to the material establish ties in proper order the heating first, 2. Some modes of needle punching ar, three pipe bundle drier, each pipe bundle drier's tail gas export is respectively with first, 2. Some modes of needle punching ar, the air intake connection of three husky ke longs, it is first, the air outlet of two husky ke longs is connected with the air inlet on used heat absorption tower, the gas vent at used heat absorption tower top and the entry linkage of absorption tower exhaust fan, the inner chamber upper portion on used heat absorption tower is equipped with the packing layer, the top of packing layer is equipped with cloth liquid dish, the bottom on used heat absorption tower is equipped with the water -collecting tray, the outlet of water -collecting tray bottom links to each other with the middle part entry of used heat flash tank, the used heat flash tank steam outlet at used heat flash tank top links to each other with the flash evaporation steam pipe, used heat flash tank bottom links to each other with the entry of absorption tower circulating pump, the export of absorption tower circulating pump links to each other with the central moisturizing pipe of cloth liquid dish. The utility model discloses system for waste heat that utilizes desiccator carries out evaporative concentration, waste heat utilization is high, and concentration effect is good.

Description

A kind of waste heat using drying machine is evaporated the system concentrating

Technical field

This utility model is related to a kind of residual neat recovering system, is evaporated dense particularly to a kind of waste heat using drying machine The system of contracting, belongs to technical field of waste heat utilization.

Background technology

Alcohol Plant produces ethanol and generally carries out liquid fermentation using raw materials such as Semen Maydiss, and starch is converted to ethanol and titanium dioxide Carbon, other nutritional labelings such as protein, fat, fiber etc. are all stayed in mash.Simultaneously because the effect of microorganism, egg in mash White matter, vitamin B group and amino acid content all increased than Semen Maydiss, and containing the unknown somatomedin generating in fermentation, It is good albumen feedstuff.

DDGS（Distillers Dried Grains with Solubles）, be by cleaner liquid be dried concentrate after again with Filtering residue combination drying and the feedstuff that obtains.Because the protein content of DDGS is more than 26%, it has also become Feed Manufacturing both at home and abroad A kind of wide variety of novel protein feed raw material of enterprise, is commonly used to Substitution for Soybean Meal, fish in poultry and aquatic product matched feedstuff Powder, adding proportion reaches as high as 30%, and can be with Direct-fed ruminant.

Traditional DDGS feed production system is：Useless for Alcohol Plant mash is isolated ethanol slag and clear liquid, ethanol slag is entered Row drying.For improving yield, when ethanol slag is dried, it is in parallel using multiple stage pipe bundle drier, every pipe bundle drier Disposable dry ethanol slag reaches less than 12% to moisture content, then using the concentrated solution of clear liquid, dried ethanol slag is carried out Plus slurry.There is following weak point in such technique：(1) ethanol slag, can shape on surface after being oven-dried and being less than 12% to moisture content Become a shell, now carry out plus slurry, concentrated solution is not easily penetrated into the surface being simply bonded in ethanol slag inside ethanol slag, makes Ethanol slag is easy to agglomerating caking, poor product quality.(2) ethanol slag is disposably dried and put in place, steam consumption is big, done Dry efficiency is low, is unfavorable for the cascade utilization of energy.(3) in order to discharge humidity, the convulsion amount ratio of pipe bundle drier as quickly as possible Larger, the aperture of fresh air air door also than larger so that the exhaust temperature of pipe bundle drier is low, high containing air capacity, reduce tail gas Quality, be unfavorable for carrying out heat recovery to tail gas.

Utility model content

The purpose of this utility model is, overcomes problems of the prior art, provides a kind of the remaining of utilization drying machine Heat is evaporated the system concentrating, and utilization rate of waste heat is high, and clear liquid concentrated effect is good.

For solving above technical problem, what a kind of waste heat using drying machine of the present utility model was evaporated concentration is System, including material is sequentially connected in series with heating the first pipe bundle drier, the second pipe bundle drier and the 3rd pipe bundle drier, described The offgas outlet at first, second and third pipe bundle drier top is connected with the air inlet of first, second and third cyclone respectively, and described First, the air outlet of two cyclones is connected with the absorption tower air inlet in the middle part of used heat absorption tower respectively, and described used heat absorbs top of tower Absorption tower air vent be connected with the entrance of absorption tower exhaust blower, the inner chamber top on described used heat absorption tower is provided with packing layer, institute The top stating packing layer is provided with cloth liquid disk, and the bottom on described used heat absorption tower is provided with water-collecting tray, the draining of described tray bottom of catchmenting Mouth is connected with the used heat flash tank entrance in the middle part of used heat flash tank, the used heat flash tank steam (vapor) outlet of described used heat flash drum overhead It is connected with flash-off steam pipe, the flash tank discharge outlet of described used heat flash tank bottom is connected with the entrance of absorption tower circulating pump, institute The outlet stating absorption tower circulating pump is connected with the filling pipe of described Bu Ye disk center by absorption tower circulation pipe.

With respect to prior art, this utility model achieves following beneficial effect：1. adopt multiple stage pipe with traditional technique Bundle drying machine disposable drying in parallel is compared, and this utility model adopts the series connection of more than three-level to dry.Disposably dry to ensure The moisture content of discharging meets the requirements, and baked strength ratio is larger, must use a large amount of fresh airs, steam consumption and electricity to discharge humidity Power consumption all ratios are larger, tail gas poor quality.Before this utility model, the moisture content of two-stage discharging is higher, need not be in a large number using new Wind, tail gas quality better；Although the moisture content ratio of final stage discharging is relatively low, due to passing through the prebake of front two-stage, final stage Again without very greatly, fresh air consumes and is also far below traditional handicraft baked strength.System volume drying efficiency of the present utility model Height, steam is low with power consumption, carries out waste heat recovery, cascade utilization respectively beneficial to tail gas.2. front two-stage of the present utility model Simply prebake, the dust in tail gas is relatively cleaner less, and the air weight content in tail gas is 30～50%, and temperature is 90～96 DEG C, vapour content is high, improves the quality of tube bundle drying machine tail gas, beneficial to carrying out waste heat recovery, through the first cyclone, second Enter used heat absorption tower after cyclone dedusting and reclaim heat.3. this utility model is carried out to high-quality tail gas and low quality tail gas point Class recovery waste heat, with strong points, utilization rate of waste heat is high.4. the high-quality that the first pipe bundle drier, the second pipe bundle drier are discharged Tail gas enters used heat absorption tower from absorption tower air inlet, flows upwardly through packing layer, drenches following of in packing layer with cloth liquid disk Ring water carries out hot and humid area and is washed, and waste gas is extracted out by absorption tower exhaust blower, and the recirculated water after temperature rising falls into and catchments In disk, under suction function, flow into used heat flash tank, flash distillation in used heat flash tank becomes 85 ± 5 DEG C of flash-off steams entrance flash distillations Steam pipe uses for later process, and the condensed water of used heat flash tank bottom is circulated pumped by absorption tower and returns to used heat absorption Circulated sprinkling is removed in the cloth liquid disk of tower.

As improvement of the present utility model, tube bank condensed water row's mouth of described first, second and third pipe bundle drier is common and cold Condensate water pot entrance in the middle part of solidifying water pot connects, and described condensate water pot top is provided with condensate water pot steam (vapor) outlet, described condensed water Tank steam (vapor) outlet is connected with described flash-off steam pipe, and the condensate water pot discharge outlet of described condensate water pot bottom is entered with condensate pump Mouth connects, and the outlet of described condensate pump is connected with the softened water feed pipe of boiler room.The steaming that each pipe bundle drier tube bank is discharged Vapour condensed water is very clean, and the flash-off steam producing after condensed water pot flash distillation makes for later process also into flash-off steam pipe Extracted out and be sent to boiler room with, the remaining condensed water water pump that is condensed, can be directly as boiler replenishing water.

As further improvement of the utility model, washing in the middle part of the air outlet of described 3rd cyclone and exhaust gas washing tower Wash tower air inlet to connect, the inner chamber top of described exhaust gas washing tower is provided with shower, described shower and scrubbing tower spray pump Outlet is connected, and the entrance of described scrubbing tower spray pump is connected with spray tank, the exhaust gas washing tower of described exhaust gas washing tower bottom Discharge outlet is directed at described spray tank；The exhaust gas washing tower air vent at described exhaust gas washing tower top imitates heat exchanger shell pass with used heat The used heat at top is imitated heat exchanger air inlet and is connected, and described used heat is imitated the used heat effect heat exchanger air vent of heat exchanger shell pass bottom and given up The entrance of thermal effect exhaust blower is connected；Described used heat imitates used heat effect heat exchanger dirt condensate discharge mouth and the dirt of heat exchanger shell pass bottom Water treatment station is connected；The feed separation mouth that described used heat imitates heat exchanger bottom passes through to be connected with used heat effect separator communicating pipe, institute The top stating used heat effect separator is provided with used heat effect separator air vent, and described used heat imitates the used heat effect heat exchanger of exchanger base The used heat of material outlet and described used heat effect separator bottom imitates separator material outlet jointly and used heat imitates the entrance of circulating pump Connect, the entrance that described used heat imitates circulating pump is also connected with the outlet of an effect material outlet tube；Described used heat imitates going out of circulating pump The used heat effect heat exchanger material inlet that mouth imitates heat exchanger with described used heat is connected, and described used heat imitates the outlet of circulating pump also by useless Thermal effect material outlet tube is connected with the entrance of concentrated solution holding vessel；The bottom of described concentrated solution holding vessel and the entrance phase of screw pump Even, the outlet of described screw pump is connected with total liquid pipe that concentrates.What the 3rd pipe bundle drier was discharged is low quality tail gas, dust content Height, at 75～90 DEG C, air weight content is 60～70% to temperature, and the low quality tail gas that the 3rd pipe bundle drier is discharged is through the 3rd After cyclone dedusting, enter the scrubbing tower air inlet in the middle part of exhaust gas washing tower, during flowing up, sprayed by shower Recirculated water washing, washings fall in spray tank, and washed tower spray pumped is sent to shower circulated sprinkling.After washing The exhaust gas washing tower air vent from exhaust gas washing tower top for the tail gas discharge, imitate under the suction of exhaust blower in used heat, low quality tail Gas enters the used heat effect heat exchanger air inlet that used heat imitates heat exchanger shell pass top, the used heat to tube side during flowing downward Effect concentrated solution is heated, and the dirt that the used heat imitating heat exchanger shell pass bottom from used heat imitates heat exchanger dirt condensate discharge mouth discharge is cold Lime set enters after Sewage Disposal is processed and discharges.Used heat imitates the used heat effect concentrated solution of exchanger base, used heat effect separator bottom Used heat imitate concentrated solution and from one effect material outlet tube come one effect concentrated solution jointly by used heat imitate circulation pumped, be sent to used heat Effect heat exchanger material inlet is circulated heating, and the used heat effect concentrated solution after heating enters from communicating pipe entrance used heat effect separator Row separates, and the used heat effect steam that moisture evaporation becomes 65 ± 5 DEG C is discharged from used heat effect separator air vent, the used heat effect after concentration Concentrated solution enters used heat effect circulation pump circulation from used heat effect separator material outlet, and part used heat imitates the used heat effect of circulating-pump outlet Concentrated solution, from used heat effect material outlet tube discharge, enters the storage of concentrated solution holding vessel, is sent into total concentration liquid pipe by screw rod pumped Add slurry for the second pipe bundle drier and the 3rd pipe bundle drier to use, in concentrated solution holding vessel, the weight concentration of concentrated solution is 31% ～35%.

As further improvement of the utility model, the outlet of described flash-off steam pipe and an effect heat exchanger shell pass top One effect heat exchanger air inlet is connected, and an effect heat exchanger air vent of a described effect heat exchanger shell pass bottom is connected with pumping house steward； The feed separation mouth of a described effect heat exchanger bottom passes through to be connected with an effect separator communicating pipe, the top of a described effect separator It is provided with an effect separator air vent, an effect heat exchanger material outlet of a described effect exchanger base and a described effect separator bottom The common entrance with an effect circulating pump of one effect separator material outlet in portion is connected, and the entrance of a described effect circulating pump is also imitated with two The outlet of material outlet tube is connected；The outlet of a described effect circulating pump imitates heat exchanger material inlet with the one of a described effect heat exchanger Connect, the outlet of a described effect circulating pump is also connected with described one effect material outlet tube.Under the swabbing action of pumping house steward, give up 85 ± 5 DEG C of flash-off steams that heat-lightening steaming pot and condensate water pot flash off enter an effect heat exchanger shell pass top from flash-off steam pipe An effect heat exchanger air inlet, during flowing downward, the one of tube side effect concentrated solution is heated, an effect heat exchanger bottom Portion one effect concentrated solution, one effect separator bottom one effect concentrated solution and from two effect material outlet tubes come two effect concentrated solutions common By an effect circulation pumped, it is sent to an effect heat exchanger material inlet and is circulated heating, the effect concentrated solution after heating is from connection Pipe enters in an effect separator and carries out separating, and moisture evaporation becomes 72 ± 5 DEG C of two effect steam from an effect separator air vent row Go out, the effect concentrated solution after concentration enters an effect circulation pump circulation from an effect separator material outlet, part one effect circulation pumps out One effect concentrated solution of mouth discharges the entrance conveying imitating circulating pump to used heat from an effect material outlet tube, and entrance next stage concentrates, and one In effect material outlet tube 17g, the weight concentration of concentrated solution is 25%～27%.Temperature highest flash-off steam with dense through three-level One effect concentrated solution of contracting carries out heat exchange it is ensured that concentrated effect.

As further improvement of the utility model, a described effect separator air vent and two imitates heat exchanger shell pass tops Two effect heat exchanger air inlet are connected, and the one of a described effect heat exchanger shell pass bottom imitates heat exchanger condensate drain outlet and described two effects Two effect heat exchanger condensing water inlets in the middle part of heat exchanger shell pass connect, two effect heat exchanger rows of described two effect heat exchanger shell pass bottoms QI KOU is connected with described pumping house steward；The feed separation mouth of described two effect heat exchanger bottoms passes through communicating pipe and two effect separator phases Even, the top of described two effect separators is provided with two effect separator air vents, two effect heat exchange implements of described two effect exchanger base Material outlet entrance with two effect circulating pumps common with two effect separator material outlets of described two effect separator bottom is connected, described The entrance of two effect circulating pumps is also connected with the outlet of triple effect material outlet tube；The outlet of described two effect circulating pumps is changed with described two effects Two effect heat exchanger material inlets of hot device connect, and the outlet of described two effect circulating pumps is also connected with described two effect material outlet tubes. Under the swabbing action of pumping house steward, the two effect steam discharged from an effect separator air vent enter two effect heat exchanger shell pass tops Two effect heat exchanger air inlet, during flowing downward, the two of tube side effect concentrated solutions are heated, two effect steam heat releases After become two effect condensed waters and continue to flow downward.Discharge from an effect heat exchanger condensate drain outlet of an effect heat exchanger shell pass bottom An effect condensed water enter two effect heat exchanger condensing water inlets in the middle part of two effect heat exchanger shell pass, common after mix with two effect condensed waters With the continuation that flows downward to two effect concentrated solution heating.Two effect exchanger base two effect concentrated solutions, two effect separator bottom two Effect concentrated solution and the triple effect concentrated solution coming from triple effect material outlet tube are circulated pumped by two effects jointly, are sent to two effect heat exchange implements Material entrance is circulated heating, and two effect concentrated solutions after heating carry out separating from communicating pipe entrance two effect separators, and moisture steams Send out the triple effect steam becoming 65 ± 5 DEG C from two effect separator air vents discharges, two effect concentrated solutions after concentration imitate separators from two Material outlet enters two effect circulation pump circulations, and the two effect concentrated solutions that part two imitates circulating-pump outlet are discharged from two effect material outlet tubes To one effect circulating pump entrance conveying, enter next stage concentrate, two effect material outlet tubes in concentrated solution weight concentrations be 18%～ 20%.Two higher effect steam of temperature and the two effect concentrated solutions concentrating through two-stage carry out heat exchange, and concentrated effect is good.

As further improvement of the utility model, described two effect separator air vents and three-effect heat exchanger shell side top Three-effect heat exchanger air inlet is connected, and the two of described two effect heat exchanger shell pass bottoms imitate heat exchanger condensate drain outlets and described triple effect Three-effect heat exchanger condensing water inlet in the middle part of heat exchanger shell pass connects, the three-effect heat exchanger row of described three-effect heat exchanger shell side bottom QI KOU is connected with described pumping house steward；The feed separation mouth of described three-effect heat exchanger bottom passes through communicating pipe and triple effect separator phase Even, the top of described triple effect separator is provided with triple effect separator air vent, the three-effect heat exchanger thing of described three-effect heat exchanger bottom Material outlet is connected with the entrance of triple effect cycle pump jointly with the triple effect separator material outlet of described triple effect separator bottom, ethanol The clear liquid that the useless mash of factory is isolated is connected with the clear liquid charging aperture of described triple effect separator bottom by clear liquid pipe；Described triple effect follows The outlet of ring pump is connected with the three-effect heat exchanger material inlet of described three-effect heat exchanger, the outlet of described triple effect cycle pump also with institute State triple effect material outlet tube to be connected.Under the swabbing action of pumping house steward, from the triple effect steam of two effect separator air vents discharges Enter the three-effect heat exchanger air inlet at three-effect heat exchanger shell side top, the triple effect concentrated solution to tube side during flowing downward Heated, become triple effect condensed water after triple effect steam heat release and continue to flow downward.Two effects from two effect heat exchanger shell pass bottoms The three-effect heat exchanger condensed water that the two effect condensed waters that heat exchanger condensate drain outlet is discharged enter in the middle part of three-effect heat exchanger shell side enters Mouthful, the continuation that jointly flows downward after being mixed with triple effect condensed water is heated to triple effect concentrated solution.It is clear that the useless mash of Alcohol Plant is isolated The weight concentration of liquid is 4.5%～5.5%, and this clear liquid enters the clear liquid charging aperture of triple effect separator bottom by clear liquid pipe, with three Effect concentrated solution mixing, the triple effect concentrated solution of three-effect heat exchanger bottom and triple effect separator bottom jointly by triple effect cycle pumped, It is sent to three-effect heat exchanger material inlet and is circulated heating, the triple effect concentrated solution after heating entered triple effect separator from communicating pipe Carry out separating, the quadruple effect steam that moisture evaporation becomes 50 ± 5 DEG C is discharged from triple effect separator air vent；Triple effect after concentration concentrates Liquid enters triple effect cycle pump circulation from triple effect separator material outlet, and the triple effect concentrated solution of part triple effect cycle pump discharge is from triple effect The entrance conveying to two effect circulating pumps discharged by material outlet tube, enters next stage and concentrates, concentrated solution in triple effect material outlet tube Weight concentration is 11%～13%.The relatively low triple effect steam of temperature and the triple effect concentrated solution carrying out primary concentration carry out heat exchange, concentrate Effect is good.

As further improvement of the utility model, described triple effect separator air vent is connected with described pumping house steward, institute The outlet stating pumping house steward is connected with the condenser air inlet on condenser shell side top, the condenser of described condenser shell side bottom Air vent is connected with the entrance of vacuum pump；The condenser condensate drain outlet of described condenser shell side bottom and Condensed water collection tank Entrance connects, and the top of described Condensed water collection tank is connected with described pumping house steward, and the bottom of described Condensed water collection tank is defeated with solidifying water The entrance sending pump is connected, and the outlet of described solidifying water delivery pump is passed through at valve and the described filling pipe spraying tank and sewage respectively Reason station connects；The three-effect heat exchanger condensate drain outlet of described three-effect heat exchanger shell side bottom and the entrance of described Condensed water collection tank Connect.Under the swabbing action of vacuum pump, an effect heat exchanger air vent, two effect heat exchanger air vents, three-effect heat exchanger air vent The quadruple effect steam of the incoagulable gas discharged and the discharge of triple effect separator air vent all enters condenser shell side by being evacuated house steward The condenser air inlet on top, cools down indirectly along shell fluid flow and by the cooling water of tube side from top to bottom, finally arranges from condenser QI KOU escapes and enter vacuum pump；Cooling water enters from condenser cooling water entrance, from bottom to top along tube side flow, from condenser Coolant outlet is discharged.The condensed water that the condenser condensate drain outlet of condenser shell side bottom is discharged enters Condensed water collection tank, The condensed water that the three-effect heat exchanger condensate drain outlet of three-effect heat exchanger shell side bottom is discharged is received also into Condensed water collection tank, solidifying water The incoagulable gas of collection tank top is sucked away by gas house steward.

As further improvement of the utility model, described one, two, the shell side top of three-effect heat exchanger is respectively equipped with and do not coagulate Property gas bleeding point, each described incoagulable gas bleeding point respectively pass through auxiliary exhaust valve with described pumping house steward be connected.System Each auxiliary exhaust valve can be opened before putting into operation, by system incoagulable gas extract out, improve one, two, three-effect heat exchanger Heat exchange efficiency.

As further improvement of the utility model, described one, two, the shell side bottom of three-effect heat exchanger is connected to First, two, triple effect shell side knockout drum, described one, two, three-effect heat exchanger air vent respectively with described one, two, triple effect shell side knockout drum Top be connected, described one, two, three-effect heat exchanger condensate drain outlet with described one, two, the bottom phase of triple effect shell side knockout drum Even.

As further improvement of the utility model, described one, two, three-effect heat exchanger and described condenser are many backhauls Baffling shell-and-tube heat exchanger.Flowing stroke in heat exchanger shell pass for the steam can be extended by the separation of deflection plate, by two The tube sheet at end can be realized concentrated solution and carry out diffraction current in tube side, to increase heat-exchange time and the heat-transfer surface of steam and concentrated solution Long-pending.

Brief description

With reference to the accompanying drawings and detailed description this utility model is described in further detail, accompanying drawing only provides ginseng Examine and illustrate to use, be not used to limit this utility model.

Fig. 1 is the flow chart of the system that this utility model is evaporated concentrating using the waste heat of drying machine.

In figure：1. seperator；1a. purified liquor outlet；1b. wet ethanol slag exports；2. feed conveying worm；3. the first tube bank Drying machine；3a. first feed auger；3b. first T-piece splitting valve；3c. the first returning charge conveying worm；3d. first cyclone； 4. the second pipe bundle drier；4a. second feed auger；4b. second T-piece splitting valve；4c. the second returning charge conveying worm；4d. Second cyclone；4e. first mixer；4f. first plus slurry valve；5. the 3rd pipe bundle drier；5a. the 3rd feed auger；5b. Three T-piece splitting valves；5c. the 3rd returning charge conveying worm；5d. the 3rd cyclone；5e. second mixer；5f. second plus slurry valve； 6. discharging spiral conveyor；7. used heat absorption tower；7a. absorption tower air inlet；7b. absorption tower air vent；7c. cloth liquid disk；7d. fills out The bed of material；7e. water-collecting tray；7f. absorption tower exhaust blower；7g. absorption tower circulating pump；8. used heat flash tank；8a. used heat flash tank enters Mouthful；8b. used heat flash tank steam (vapor) outlet；8c. flash tank discharge outlet；9. condensate water pot；9a. condensate pump；10. multi-stage countercurrent is cold But tower；10a. fan housing；10b. sack cleaner；11. cooling tower air exhausters；12. exhaust gas washing towers；12a. scrubbing tower air inlet； 12b. scrubbing tower air vent；12c. scrubbing tower discharge outlet；12d. scrubbing tower spray pump；12e. sprays tank；13. used heat effect heat exchange Device；13a. used heat imitates heat exchanger material inlet；13b. used heat imitates heat exchanger material outlet；13c. used heat imitates heat exchanger air inlet； 13d. used heat imitates heat exchanger air vent；13e. used heat effect heat exchanger dirt condensate discharge mouth；13f. used heat imitates circulating pump；13g. gives up Thermal effect material outlet tube；13h. used heat imitates exhaust blower；14. used heat effect separators；14a. used heat imitates separator air vent；14b. gives up Thermal effect separator material outlet；15. concentrated solution holding vessels；16. screw pumps；17. 1 effect heat exchangers；17a. mono- imitates heat exchanger material Entrance；17b. mono- imitates heat exchanger material outlet；17c. mono- imitates heat exchanger air inlet；17d. mono- imitates heat exchanger air vent；17e. mono- Effect heat exchanger condensate drain outlet；17f. mono- imitates circulating pump；17g. mono- imitates material outlet tube；18. 1 effect separators；18a. mono- is imitated Separator air vent；18b. mono- imitates separator material outlet；19. 2 effect heat exchangers；19a. bis- imitates heat exchanger material inlet；19b. Two effect heat exchanger material outlets；19c. bis- imitates heat exchanger air inlet；19d. bis- imitates heat exchanger air vent；19e. bis- effect heat exchanger is cold Solidifying water outlet；19f. bis- imitates circulating pump；19g. bis- imitates material outlet tube；19h. bis- imitates heat exchanger condensing water inlet；20. 2 effects Separator；20a. bis- imitates separator air vent；20b. bis- imitates separator material outlet；21. three-effect heat exchangers；21a. triple effect heat exchange Device material inlet；21b. three-effect heat exchanger material outlet；21c. three-effect heat exchanger air inlet；21d. three-effect heat exchanger air vent； 21e. three-effect heat exchanger condensate drain outlet；21f. triple effect cycle pump；21g. triple effect material outlet tube；21h. three-effect heat exchanger is cold Solidifying water inlet；22. triple effect separators；22a. triple effect separator air vent；22b. triple effect separator material outlet；22c. clear liquid Charging aperture；23. condensers；23a. condenser cooling water entrance；23b. condenser cooling water exports；23c. condenser air inlet； 23d. condenser exhaust gas mouth；23e. condenser condensate drain outlet；24. Condensed water collection tanks；24a. coagulates water delivery pump；25. vacuum Pump；G1. always concentrate liquid pipe；G2.DDGS production tube；G3. flash-off steam pipe；G4. it is evacuated house steward.

Specific embodiment

As shown in figure 1, this utility model is included to material successively using the system that the waste heat of drying machine is evaporated concentrating First pipe bundle drier 3 of series connection heating, the second pipe bundle drier 4 and the 3rd pipe bundle drier 5, seperator 1 is given up with Alcohol Plant Mash pipe be connected, the purified liquor outlet 1a of seperator 1 is connected with clear liquid concentration systems entrance, the outlet of clear liquid concentration systems with always dense Contracting liquid pipe G1 is connected, and the wet ethanol slag outlet 1b of seperator 1 is connected with the charging aperture of feed conveying worm 2, feed spiral transferring The first discharging opening sending machine 2 is connected with the entrance of the first feed auger 3a of the first pipe bundle drier 3, the first pipe bundle drier 3 Discharging opening be connected with the entrance of the first T-piece splitting valve 3b, the returning charge mouth of the first T-piece splitting valve 3b and the first returning charge spiral transferring The lower inlet sending machine 3c connects, and the entrance of the top exit of the first returning charge conveying worm 3c and the first feed auger 3a is even Connect；The discharging opening of the first T-piece splitting valve 3b is connected with the head inlet of discharging spiral conveyor 6, discharging spiral conveyor 6 Centre exit is connected with the lower inlet of the second returning charge conveying worm 4c, the top exit of the second returning charge conveying worm 4c with The charging aperture of the first mixer 4e connects；Second discharging opening of the feed conveying worm 2 also charging aperture with the first mixer 4e Connect, always concentrate also being connected with the charging aperture of the first mixer 4e through first plus slurry valve 4f of liquid pipe G1；First mixer 4e's Discharging opening is connected with the entrance of the second feed auger 4a of the second pipe bundle drier 4.

The discharging opening of the second pipe bundle drier 4 is connected with the entrance of the second T-piece splitting valve 4b, the second T-piece splitting valve 4b Returning charge mouth be connected with the anterior entrance of discharging spiral conveyor 6, the discharging opening of the second T-piece splitting valve 4b and discharging spiral transferring The rear entry sending machine 6 connects.

The caudal end egress of discharging spiral conveyor 6 is connected with the lower inlet of the 3rd returning charge conveying worm 5c, and the 3rd returns The top exit of material conveying worm 5c is connected with the charging aperture of the second mixer 5e, and total liquid pipe G1 that concentrates through second plus starches valve 5f Also it is connected with the charging aperture of the second mixer 5e；The discharging opening of the second mixer 5e and the 3rd charging of the 3rd pipe bundle drier 5 The entrance of spiral 5a connects.

The discharging opening of the 3rd pipe bundle drier 5 is connected with the entrance of the 3rd T-piece splitting valve 5b, the 3rd T-piece splitting valve 5b Returning charge mouth be connected with the centre entrance of the 3rd returning charge conveying worm 5c, the discharging opening of the 3rd T-piece splitting valve 5b is become with DDGS QC G2 connects.

The job step that this utility model is evaporated the system of concentration using the waste heat of drying machine is as follows successively：

(1) Alcohol Plant's separated machine of mash 1 that gives up is separated into wet ethanol slag and clear liquid, and the water content of wet ethanol slag is 65～ 72%, seperator 1 can adopt horizontal screw centrifuge or filter press.

Above-mentioned clear liquid carry out concentration become concentrated solution enter total concentrate liquid pipe G1, above-mentioned wet ethanol slag is from wet ethanol Slag outlet 1b enters feed conveying worm 2, and a part enters the first charging spiral shell from the first discharging opening of feed conveying worm 2 Rotation 3a, sends into the first pipe bundle drier 3 by the first feed auger 3a and carries out one-level drying.

(3) one-level dried ethanol slag is discharged from the discharging opening of the first pipe bundle drier 3, by the first T-piece splitting valve 3b Control returning charge ratio, the ethanol slag of one-level returning charge returns to the entrance of the first feed auger 3a through the first returning charge conveying worm 3c, one The middle part that the head inlet of the ethanol slag entrance discharging spiral conveyor 6 of level discharging is delivered to discharging spiral conveyor 6 backward goes out Mouthful discharge, the discharging moisture control that one-level is dried is 15～30%.

(4) the ethanol slag of one-level discharging is after the centre exit of discharging spiral conveyor 6 is discharged, through the second returning charge spiral transferring The machine 4c of sending delivers to the charging aperture of the first mixer 4e；Another part of step (2) wet ethanol slag is from the of feed conveying worm 2 Two discharging openings discharge the charging aperture also into the first mixer 4e, and step concentrated solution (2) is through first plus slurry valve 4f also into first The charging aperture of mixer 4e, after the first mixer 4e mix homogeneously, the ethanol slag that one-level adds slurry enters the second feed auger 4a, Second pipe bundle drier 4 is sent into by the second feed auger 4a and carries out secondary drying.

(5) the ethanol slag after secondary drying is discharged from the discharging opening of the second pipe bundle drier 4, by the second T-piece splitting valve 4b Control returning charge ratio, the ethanol slag of two grades of returning charges enters the anterior entrance of discharging spiral conveyor 6, common with the ethanol slag of one-level discharging Discharge with the centre exit being delivered to discharging spiral conveyor 6 backward, subsequently into the lower end of the second returning charge conveying worm 4c Entrance；The rear entry that the ethanol slag of two grades of dischargings enters discharging spiral conveyor 6 is delivered to discharging spiral conveyor 6 backward Caudal end egress is discharged, and the discharging moisture control of secondary drying is 15～30%.

(6) the ethanol slag of two grades of dischargings, after the caudal end egress of discharging spiral conveyor 6 is discharged, enters the 3rd returning charge spiral The lower inlet of conveyer 5c, and the charging aperture of the second mixer 5e is delivered to by the 3rd returning charge conveying worm 5c；Step is (2) Concentrated solution through second plus slurry valve 5f also into the second mixer 5e charging aperture, after the second mixer 5e mix homogeneously, two The ethanol slag of level plus slurry enters the 3rd feed auger 5a, sends into the 3rd pipe bundle drier 5 by the 3rd feed auger 5a and carries out three-level It is dried.

(7) the ethanol slag after three-stage drying is discharged from the discharging opening of the 3rd pipe bundle drier 5, by the 3rd T-piece splitting valve 5b controls returning charge ratio, and the ethanol slag of three-level returning charge enters the second charging aperture of the 3rd returning charge conveying worm 5c, by the 3rd returning charge Conveying worm 5c returns to the charging aperture of the second mixer 5e；The ethanol slag of three-level discharging becomes DDGS feedstuff from DDGS finished product Mouth is discharged into DDGS production tube G2, and the discharging moisture control of three-stage drying 10～12%, enters multi-stage countercurrent cooling tower cold But.

First pipe bundle drier 3, the second pipe bundle drier 4 top offgas outlet respectively with the first cyclone 3d, second The air inlet of cyclone 4d connects, the first cyclone 3d, the second cyclone 4d air outlet respectively with used heat absorption tower 7 middle part Absorption tower air inlet 7a connects, and the offgas outlet at the 3rd pipe bundle drier 5 top is connected with the air inlet of the 3rd cyclone 5d, the The air outlet of three cyclone 5d is connected with the scrubbing tower air inlet 12a at exhaust gas washing tower 12 middle part.

The tail gas that first pipe bundle drier 3, the second pipe bundle drier 4 are discharged is respectively through the first cyclone 3d, the second picogram The common absorption tower air inlet 7a entering used heat absorption tower 7 middle part, the tail gas warp that the 3rd pipe bundle drier 5 is discharged after imperial 4d dedusting The scrubbing tower air inlet 12a at exhaust gas washing tower 12 middle part is entered after 3rd cyclone 5d dedusting.First pipe bundle drier 3, second Pipe bundle drier 4 discharge be high-quality tail gas, dust content is low, temperature at 90～96 DEG C, air weight content be 30～ 50%, vapour content is high, temperature is high, enters used heat absorption tower 7 and reclaim after the first cyclone 3d, the second cyclone 4d dedusting Heat.What the 3rd pipe bundle drier 5 was discharged is low quality tail gas, and dust content is high, temperature at 75～90 DEG C, air weight content For 60～70%, after entering exhaust gas washing tower 12 washing after dedusting, reclaim heat.

The absorption tower air vent 7b at used heat absorption tower 7 top is connected with the entrance of absorption tower exhaust blower 7f, used heat absorption tower 7 Inner chamber top be provided with packing layer 7d, the top of packing layer 7d is provided with cloth liquid disk 7c, and the bottom on used heat absorption tower 7 is provided with water-collecting tray The discharge outlet of 7e, water-collecting tray 7e bottom is connected with the used heat flash tank entrance 8a at used heat flash tank 8 middle part, and used heat flash tank 8 pushes up The used heat flash tank steam (vapor) outlet 8b in portion is connected with flash-off steam pipe G3, flash tank discharge outlet 8c of used heat flash tank 8 bottom with The entrance of absorption tower circulating pump 7g is connected, and absorption tower circulation pipe and cloth Ye Pan 7c center are passed through in the outlet of absorption tower circulating pump 7g Filling pipe is connected.

The high-quality tail gas that first pipe bundle drier 3, the second pipe bundle drier 4 are discharged enters useless from absorption tower air inlet 7a In heat absorption tower 7, flow upwardly through packing layer 7d, drench, with cloth liquid disk 7c, the recirculated water in packing layer 7d and carry out hot and humid area simultaneously Washed, waste gas is extracted out by absorption tower exhaust blower 7f, the recirculated water after temperature raises falls in water-collecting tray 7e, in suction function Lower inflow used heat flash tank 8, after in used heat flash tank 8, flash distillation becomes 85 ± 5 DEG C of flash-off steams entrance flash-off steam pipe G3 confessions Procedure uses, and the condensed water of used heat flash tank 8 bottom is extracted out by absorption tower circulating pump 7g and returned to the cloth on used heat absorption tower 7 Circulated sprinkling is removed in liquid disk 7c.

The steam condensate (SC) that first pipe bundle drier 3, the second pipe bundle drier 4 and the 3rd pipe bundle drier 5 are discharged is common Enter in condensate water pot 9, become flash-off steam after a part of condensed water flash and enter flash-off steam pipe G3, another part condensed water The water pump 9a that is condensed extracts out and is sent to boiler room.The steam condensate (SC) that each pipe bundle drier tube bank is discharged is very clean, condensed water The flash-off steam producing after tank 9 flash distillation supplies later process to use also into flash-off steam pipe G3, and the condensed water of remnants is condensed water Pump 9a extracts out and is sent to boiler room, can be directly as boiler replenishing water.

The DDGS feedstuff that DDGS production tube G2 discharges enters after cooling down in multi-stage countercurrent cooling tower 10 and discharges, and multi-stage countercurrent is cold But tower 10 includes cooling tower tower body, and the top of cooling tower tower body is provided with fan housing 10a, the outlet of fan housing 10a and sack cleaner 10b Entrance connect, the outlet of sack cleaner 10b is connected with cooling tower air exhauster 11.

The inner chamber top of exhaust gas washing tower 12 is provided with shower, and scrubbing tower air inlet 12a is located at below shower, shower Outlet with scrubbing tower spray pump 12d is connected, and the entrance of scrubbing tower spray pump 12d is connected with spray tank 12e, exhaust gas washing tower The scrubbing tower discharge outlet 12c be aligned spray tank 12e of 12 bottoms；The scrubbing tower air vent 12b at exhaust gas washing tower 12 top with useless Used heat effect heat exchanger air inlet 13c at thermal effect heat exchanger 13 shell side top is connected, and used heat imitates the used heat of heat exchanger 13 shell side bottom The entrance that effect heat exchanger air vent 13d imitates exhaust blower 13h with used heat is connected；The used heat effect that used heat imitates heat exchanger 13 shell side bottom is changed Hot device dirt condensate discharge mouth 13e is connected with Sewage Disposal；The feed separation mouth that used heat imitates heat exchanger 13 bottom passes through connection Pipe is imitated separator 14 with used heat and is connected, and the top that used heat imitates separator 14 is provided with used heat effect separator air vent 14a, and used heat effect is changed The used heat of hot device 13 bottom imitates heat exchanger material outlet 13b and used heat imitates the used heat effect separator material outlet of separator 14 bottom The common entrance imitating circulating pump 13f with used heat of 14b is connected, and the entrance that used heat imitates circulating pump 13f also imitates material outlet tube 17g with one Outlet be connected；The used heat effect heat exchanger material inlet 13a of outlet and used heat effect heat exchanger 13 that used heat imitates circulating pump 13f connects Connect, the outlet that used heat imitates circulating pump 13f is connected with the entrance of concentrated solution holding vessel 15 also by used heat effect material outlet tube 13g； The bottom of concentrated solution holding vessel 15 is connected with the entrance of screw pump 16, and the outlet of screw pump 16 is connected with total liquid pipe G1 that concentrates.

The low quality tail gas that 3rd pipe bundle drier 5 is discharged, after the 3rd cyclone 5d dedusting, enters exhaust gas washing tower 12 The scrubbing tower air inlet 12a at middle part, during flowing up, the recirculated water being sprayed by shower washs, and washings fall into In spray tank 12e, washed tower spray pump 12d extracts out and is sent to shower circulated sprinkling.Tail gas after washing washs from waste gas The scrubbing tower air vent 12b at tower 12 top discharges, and imitates under the suction of exhaust blower 13h in used heat, and low quality tail gas enters used heat effect Used heat effect heat exchanger air inlet 13c at heat exchanger 13 shell side top, concentrates to the used heat effect of tube side during flowing downward Liquid is heated, and the dirt that the used heat imitating heat exchanger 13 shell side bottom from used heat imitates heat exchanger dirt condensate discharge mouth 13e discharge is cold Lime set enters after Sewage Disposal is processed and discharges.

Used heat imitate heat exchanger 13 bottom used heat imitate concentrated solution, used heat imitate separator 14 bottom used heat effect concentrated solution and from The effect concentrated solution that one effect material outlet tube 17g comes is extracted out by used heat effect circulating pump 13f jointly, is sent to used heat effect heat exchanger material Entrance 13a enters used heat effect heat exchanger 13 and is circulated heating, and the used heat effect concentrated solution after heating is from communicating pipe entrance used heat effect Carry out in separator 14 separating, moisture evaporation becomes 65 ± 5 DEG C of used heat effect steam from used heat effect separator air vent 14a row Go out, the used heat effect concentrated solution after concentration enters used heat effect circulating pump 13f circulation, part from used heat effect separator material outlet 14b The used heat effect concentrated solution that used heat imitates circulating pump 13f outlet is discharged from used heat effect material outlet tube 13g, enters concentrated solution holding vessel 15 Storage, being extracted out total liquid pipe G1 that concentrates of feeding by screw pump 16 makes for the second pipe bundle drier 4 and the 3rd pipe bundle drier 5 plus slurry With in concentrated solution holding vessel 15, the weight concentration of concentrated solution is 31%～35%.

The outlet of flash-off steam pipe G3 is connected with effect heat exchanger air inlet 17c at an effect heat exchanger 17 shell side top, and one One effect heat exchanger air vent 17d of effect heat exchanger 17 shell side bottom is connected with pumping house steward G4；The thing of one effect heat exchanger 17 bottom Material separating opening passes through to be connected with an effect separator 18 communicating pipe, and the top of an effect separator 18 is provided with an effect separator air vent 18a, an effect heat exchanger material outlet 17b of effect heat exchanger 17 bottom and an effect separator material of effect separator 18 bottom The common entrance with an effect circulating pump 17f of outlet 18b is connected, and the entrance of an effect circulating pump 17f also imitates material outlet tube 19g with two Outlet be connected；The outlet of one effect circulating pump 17f is connected with an effect heat exchanger material inlet 17a of an effect heat exchanger 17, an effect The outlet of circulating pump 17f is also connected with an effect material outlet tube 17g.

Under the swabbing action of pumping house steward G4,85 ± 5 DEG C of flash distillations that used heat flash tank 8 and condensate water pot 9 flash off Steam enters effect heat exchanger air inlet 17c at an effect heat exchanger 17 shell side top from flash-off steam pipe G3, flow downward During the one of tube side effect concentrated solution is heated, an effect concentrated solution of effect heat exchanger 17 bottom, effect separator 18 bottom The one effect concentrated solution in portion and the two effect concentrated solutions coming from two effect material outlet tube 19g are extracted out by an effect circulating pump 17f jointly, are sent to One effect heat exchanger material inlet 17a enters an effect heat exchanger 17 and is circulated heating, and the effect concentrated solution after heating is from communicating pipe Enter in an effect separator 18 and carry out separating, the two effect steam that moisture evaporation becomes 72 ± 5 DEG C imitate separator air vent 18a from one Discharge, the effect concentrated solution after concentration enters an effect circulating pump 17f circulation from an effect separator material outlet 18b, part one is imitated One effect concentrated solution of circulating pump 17f outlet discharges, from an effect material outlet tube 17g, the entrance conveying imitating circulating pump 13f to used heat, Enter next stage to concentrate, in an effect material outlet tube 17g, the weight concentration of concentrated solution is 25%～27%.Temperature highest flash distillation is steamed Vapour carries out heat exchange it is ensured that concentrated effect with the effect concentrated solution concentrating through three-level.

One effect separator air vent 18a is connected with two effect heat exchanger air inlet 19c at two effect heat exchanger 19 shell side tops, and one Two effect heat exchange in the middle part of one effect heat exchanger condensate drain outlet 17e of effect heat exchanger 17 shell side bottom and two effect heat exchanger 19 shell sides Device condensing water inlet 19h connects, two effect heat exchanger air vent 19d and pumping house steward's G4 phase of two effect heat exchanger 19 shell side bottoms Even；The feed separation mouth of two effect heat exchanger 19 bottoms passes through to be connected with two effect separators 20 communicating pipe, the top of two effect separators 20 Portion is provided with two effect separator air vent 20a, two effect heat exchanger material outlet 19b of two effect heat exchanger 19 bottoms and two effect separators The common entrance with two effect circulating pump 19f of two effect separator material outlet 20b of 20 bottoms is connected, and two effect circulating pump 19f enter Mouth is also connected with the outlet of triple effect material outlet tube 21g；The outlet of two effect circulating pump 19f imitates heat exchange with the two of two effect heat exchangers 19 Device material inlet 19a connects, and the outlet of two effect circulating pump 19f is also connected with two effect material outlet tube 19g.

Under the swabbing action of pumping house steward G4, the two effect steam discharged from an effect separator air vent 18a enter two effects Two effect concentrated solutions of tube side are entered during flowing downward by two effect heat exchanger air inlet 19c at heat exchanger 19 shell side top Row heating, becomes two effect condensed waters after two effect steam heat releases and continues to flow downward.An effect from an effect heat exchanger 17 shell side bottom The effect condensed water that heat exchanger condensate drain outlet 17e discharges enters two effect heat exchanger condensations in the middle part of two effect heat exchanger 19 shell sides Water inlet 19h, flows downward continuation to two effect concentrated solution heating jointly with two effect condensed waters.Two effects of two effect heat exchanger 19 bottoms Concentrated solution, two effect concentrated solutions of two effect separator 20 bottoms and the triple effect concentrated solution quilt jointly coming from triple effect material outlet tube 21g Two effect circulating pump 19f extract out, are sent to two effect heat exchanger material inlet 19a entrance two effect heat exchangers 19 and are circulated heating, heating Two effect concentrated solutions afterwards carry out separating from communicating pipe entrance two effect separators 20, and the triple effect that moisture evaporation becomes 65 ± 5 DEG C steams Vapour is discharged from two effect separator air vent 20a, and two effect concentrated solutions after concentration enter two effects from two effect separator material outlet 20b Circulating pump 19f circulates, and the two effect concentrated solutions that part two imitates circulating pump 19f outlet are discharged to an effect from two effect material outlet tube 19g Circulating pump 17f entrance conveying, enter next stage concentrate, two effect material outlet tube 19g in concentrated solution weight concentrations be 18%～ 20%.Two higher effect steam of temperature and the two effect concentrated solutions concentrating through two-stage carry out heat exchange, and concentrated effect is good.

Two effect separator air vent 20a are connected with the three-effect heat exchanger air inlet 21c at three-effect heat exchanger 21 shell side top, and two Triple effect heat exchange in the middle part of two effect heat exchanger condensate drain outlet 19e of effect heat exchanger 19 shell side bottom and three-effect heat exchanger 21 shell side Device condensing water inlet 21h connection, the three-effect heat exchanger air vent 21d of three-effect heat exchanger 21 shell side bottom and pumping house steward's G4 phase Even；The feed separation mouth of three-effect heat exchanger 21 bottom by being connected with triple effect separator 22 communicating pipe, the top of triple effect separator 22 Portion is provided with triple effect separator air vent 22a, the three-effect heat exchanger material outlet 21b of three-effect heat exchanger 21 bottom and triple effect separator The triple effect separator material outlet 22b of 22 bottoms is connected with the entrance of triple effect cycle pump 21f jointly, and it is clear that seperator 1 is isolated Liquid is connected with the clear liquid charging aperture 22c of triple effect separator 22 bottom by clear liquid pipe；The outlet of triple effect cycle pump 21f is changed with triple effect The three-effect heat exchanger material inlet 21a of hot device 21 connects, the outlet of triple effect cycle pump 21f also with triple effect material outlet tube 21g phase Even.

Under the swabbing action of pumping house steward G4, the triple effect steam discharged from two effect separator air vent 20a enters triple effect The three-effect heat exchanger air inlet 21c at heat exchanger 21 shell side top, enters to the triple effect concentrated solution of tube side during flowing downward Row heating, becomes triple effect condensed water after triple effect steam heat release and continues to flow downward.Two effects from two effect heat exchanger 19 shell side bottoms The two effect condensed waters that heat exchanger condensate drain outlet 19e discharges enter the three-effect heat exchanger condensation in the middle part of three-effect heat exchanger 21 shell side Water inlet 21h, flows downward continuation to the heating of triple effect concentrated solution jointly with triple effect condensed water.(2) the useless mash of Alcohol Plant separates step The weight concentration of the clear liquid going out is 4.5%～5.5%, and clear liquid enters the clear liquid charging aperture of triple effect separator 22 bottom by clear liquid pipe 22c, is mixed with triple effect concentrated solution, and the triple effect concentrated solution of three-effect heat exchanger 21 bottom and triple effect separator 22 bottom is jointly by triple effect Circulating pump 21f extracts out, is sent to three-effect heat exchanger material inlet 21a and is circulated heating, the triple effect concentrated solution after heating is from connection Pipe enters and carries out in triple effect separator 22 separating, and moisture evaporation becomes 50 ± 5 DEG C of quadruple effect steam from triple effect separator air vent 22a discharges；Triple effect concentrated solution after concentration enters triple effect cycle pump 21f circulation, part three from triple effect separator material outlet 22b The triple effect concentrated solution of effect circulating pump 21f outlet discharges the entrance conveying to two effect circulating pump 19f from triple effect material outlet tube 21g, Enter next stage to concentrate, in triple effect material outlet tube 21g, the weight concentration of concentrated solution is 11%～13%.The relatively low triple effect of temperature steams Vapour carries out heat exchange with the triple effect concentrated solution carrying out primary concentration, and concentrated effect is good.

Triple effect separator air vent 22a is connected with pumping house steward G4, in the outlet and condenser 23 shell side of pumping house steward G4 The condenser air inlet 23c in portion is connected, the condenser exhaust gas mouth 23d of condenser 23 shell side bottom and the entrance phase of vacuum pump 25 Even；The condenser condensate drain outlet 23e of condenser 23 shell side bottom is connected with the entrance of Condensed water collection tank 24, Condensed water collection tank 24 top is connected with pumping house steward G4, and the bottom of Condensed water collection tank 24 is connected with the entrance of solidifying water delivery pump 24a, solidifying water conveying The outlet of pump 24a is passed through valve respectively and is connected with the filling pipe of spray tank 12e and Sewage Disposal；Three-effect heat exchanger 21 shell side The three-effect heat exchanger condensate drain outlet 21e of bottom is connected with the entrance of Condensed water collection tank 24.

Under the swabbing action of vacuum pump 25, an effect heat exchanger air vent 17d, two effect heat exchanger air vent 19d, triple effect change The incoagulable gas that hot device air vent 21d discharges and the quadruple effect steam of triple effect separator air vent 22a discharge are all total by pumping Pipe G4 enters the condenser air inlet 23c on condenser 23 shell side top, from top to bottom the cooling water along shell fluid flow and by tube side Indirectly cool down, finally escape and enter vacuum pump 25 from condenser exhaust gas mouth 23d；Cooling water is from condenser cooling water entrance 23a Enter, from bottom to top along tube side flow, discharge from condenser cooling water outlet 23b.The condenser of condenser 23 shell side bottom is cold The condensed water that solidifying water outlet 23e discharges enters Condensed water collection tank 24, and the three-effect heat exchanger of three-effect heat exchanger 21 shell side bottom is cold Also into Condensed water collection tank 24, the incoagulable gas at Condensed water collection tank 24 top passes through the condensed water that solidifying water outlet 21e discharges Gas house steward be sucked away.The condensate that Condensed water collection tank 24 is collected contains a certain amount of COD（Characterized organic with COD Thing content）, could discharge after needing to process through Sewage Disposal, this utility model backs into spray tank 12e, as waste gas The spray washing water of scrubbing tower 12, realizes ladder and utilizes.

One effect heat exchanger 17, two effect heat exchanger 19, the shell side top of three-effect heat exchanger 21 are respectively equipped with incoagulable gas and take out QI KOU, each incoagulable gas bleeding point is passed through auxiliary exhaust valve respectively and is connected with pumping house steward G4.System is permissible before putting into operation Open each auxiliary exhaust valve, the incoagulable gas in system is extracted out, improve an effect heat exchanger 17, two effect heat exchanger 19, triple effect The heat exchange efficiency of heat exchanger 21.

One effect heat exchanger 17, two effect heat exchanger 19, the shell side bottom of three-effect heat exchanger 21 is connected to one, two, triple effect Shell side knockout drum, one effect heat exchanger air vent 17d, two effect heat exchanger air vent 19d, three-effect heat exchanger air vent 21d respectively with First, two, the top of triple effect shell side knockout drum is connected, an effect heat exchanger condensate drain outlet 17e, two effect heat exchanger condensed water eliminations Mouthful 19e, three-effect heat exchanger condensate drain outlet 21e are with one, two, the bottom of triple effect shell side knockout drum is connected.

One effect heat exchanger 17, two effect heat exchanger 19, three-effect heat exchanger 21 and condenser 23 are many backhauls baffling shell-and-tube Heat exchanger.Flowing stroke in heat exchanger shell pass for the steam can be extended by the separation of deflection plate, can by the tube sheet at two ends Carry out diffraction current to realize concentrated solution in tube side, to increase heat-exchange time and the heat exchange area of steam and concentrated solution.

The foregoing is only the preferable possible embodiments of this utility model, non-therefore limit to patent of the present utility model Protection domain.In addition to the implementation, this utility model can also have other embodiment, all employing equivalents or equivalent change Change the technical scheme of formation, all fall within the protection domain of this utility model requirement.This utility model is special without the technology of description Levy and can pass through or be realized using prior art, will not be described here.

Claims (10)

1. a kind of waste heat using drying machine is evaporated the system concentrating, including the first tube bank that material is sequentially connected in series with heating Drying machine, the second pipe bundle drier and the 3rd pipe bundle drier, the offgas outlet at described first, second and third pipe bundle drier top Be connected with the air inlet of first, second and third cyclone respectively it is characterised in that：The air outlet of described first and second cyclone respectively with Absorption tower air inlet in the middle part of used heat absorption tower connects, and described used heat absorbs absorption tower air vent and the absorption tower air draft of top of tower The entrance of machine connects, and the inner chamber top on described used heat absorption tower is provided with packing layer, and the top of described filler layer is provided with cloth liquid disk, institute The bottom stating used heat absorption tower is provided with water-collecting tray, the used heat flash distillation in the middle part of the discharge outlet of described tray bottom of catchmenting and used heat flash tank Tank entrance is connected, and the used heat flash tank steam (vapor) outlet of described used heat flash drum overhead is connected with flash-off steam pipe, and described used heat dodges The flash tank discharge outlet of steaming pot bottom is connected with the entrance of absorption tower circulating pump, and the outlet of described absorption tower circulating pump is passed through to absorb Tower circulation pipe is connected with the filling pipe of described Bu Ye disk center.

2. the waste heat using drying machine according to claim 1 be evaporated concentrate system it is characterised in that：Described First, tube bank condensed water row's mouth of two, three pipe bundle driers is connected with the condensate water pot entrance in the middle part of condensate water pot jointly, described cold Solidifying water pot top is provided with condensate water pot steam (vapor) outlet, and described condensate water pot steam (vapor) outlet is connected with described flash-off steam pipe, described The condensate water pot discharge outlet of condensate water pot bottom is connected with the entrance of condensate pump, the outlet of described condensate pump and boiler room Softened water feed pipe connects.

3. the waste heat using drying machine according to claim 1 and 2 be evaporated concentrate system it is characterised in that：Institute State the air outlet of the 3rd cyclone to be connected with the scrubbing tower air inlet in the middle part of exhaust gas washing tower, on the inner chamber of described exhaust gas washing tower Portion is provided with shower, and described shower is connected with the outlet of scrubbing tower spray pump, the entrance of described scrubbing tower spray pump and spray Tank is connected, and the exhaust gas washing tower discharge outlet of described exhaust gas washing tower bottom is directed at described spray tank；Described exhaust gas washing tower The used heat effect heat exchanger air inlet that the exhaust gas washing tower air vent at top imitates heat exchanger shell pass top with used heat is connected, described used heat The used heat of effect heat exchanger shell pass bottom is imitated heat exchanger air vent and is connected with the entrance of used heat effect exhaust blower；Described used heat imitates heat exchanger The used heat effect heat exchanger dirt condensate discharge mouth of shell side bottom is connected with Sewage Disposal；Described used heat imitates the thing of heat exchanger bottom Material separating opening passes through to be connected with used heat effect separator communicating pipe, and the top that described used heat imitates separator is provided with used heat effect separator row QI KOU, the used heat that described used heat imitates exchanger base imitates heat exchanger material outlet and the used heat effect of described used heat effect separator bottom The common entrance imitating circulating pump with used heat of separator material outlet is connected, and the entrance that described used heat imitates circulating pump also imitates material with one The outlet of outlet tube is connected；The used heat effect heat exchanger material of outlet and described used heat effect heat exchanger that described used heat imitates circulating pump enters Mouth connects, and the outlet that described used heat imitates circulating pump is connected with the entrance of concentrated solution holding vessel also by used heat effect material outlet tube； The described bottom of concentrated solution holding vessel is connected with the entrance of screw pump, and the outlet of described screw pump is connected with total liquid pipe that concentrates.

4. the waste heat using drying machine according to claim 3 be evaporated concentrate system it is characterised in that：Described sudden strain of a muscle One effect heat exchanger air inlet of the outlet and an effect heat exchanger shell pass top of steaming steam pipe is connected, under a described effect heat exchanger shell pass The one effect heat exchanger air vent in portion is connected with pumping house steward；Described one effect heat exchanger bottom feed separation mouth pass through communicating pipe with One effect separator is connected, and the top of a described effect separator is provided with an effect separator air vent, a described effect exchanger base One effect separator material outlet of one effect heat exchanger material outlet and a described effect separator bottom is common to imitate circulating pump with one Entrance connects, and the entrance of a described effect circulating pump is also connected with the outlet of two effect material outlet tubes；Described one imitates going out of circulating pump Mouth is connected with an effect heat exchanger material inlet of described one effect heat exchanger, and the outlet of a described effect circulating pump also imitates thing with described one Material outlet tube is connected.

5. the waste heat using drying machine according to claim 4 be evaporated concentrate system it is characterised in that：Described one Effect separator air vent is connected with the two effect heat exchanger air inlet at two effect heat exchanger shell pass tops, a described effect heat exchanger shell pass bottom The one effect heat exchanger condensate drain outlet in portion is connected with two effect heat exchanger condensing water inlets in the middle part of described two effect heat exchanger shell pass, Two effect heat exchanger air vents of described two effect heat exchanger shell pass bottoms are connected with described pumping house steward；Described two effect heat exchanger bottoms Feed separation mouth pass through communicating pipe with two effect separators be connected, described two imitate separators tops be provided with two effect separator aerofluxuss Mouthful, the two effect separator materials that two effect heat exchanger material outlets of described two effect exchanger base imitate separator bottom with described two The common entrance with two effect circulating pumps of outlet is connected, and described two imitate the entrance of the circulating pumps outlet phase also with triple effect material outlet tube Even；The outlet of described two effect circulating pumps is connected with two effect heat exchanger material inlets of described two effect heat exchangers, described two effect circulations The outlet of pump is also connected with described two effect material outlet tubes.

6. the waste heat using drying machine according to claim 5 be evaporated concentrate system it is characterised in that：Described two Effect separator air vent is connected with the three-effect heat exchanger air inlet at three-effect heat exchanger shell side top, described two effect heat exchanger shell pass bottoms The two effect heat exchanger condensate drain outlets in portion are connected with the three-effect heat exchanger condensing water inlet in the middle part of described three-effect heat exchanger shell side, The three-effect heat exchanger air vent of described three-effect heat exchanger shell side bottom is connected with described pumping house steward；Described three-effect heat exchanger bottom Feed separation mouth by being connected with triple effect separator communicating pipe, the top of described triple effect separator is provided with triple effect separator aerofluxuss Mouthful, the triple effect separator material of the three-effect heat exchanger material outlet of described three-effect heat exchanger bottom and described triple effect separator bottom Outlet is connected with the entrance of triple effect cycle pump jointly, and the clear liquid that the useless mash of Alcohol Plant is isolated is divided with described triple effect by clear liquid pipe Clear liquid charging aperture from device bottom is connected；The outlet of described triple effect cycle pump and the three-effect heat exchanger material of described three-effect heat exchanger Entrance connects, and the outlet of described triple effect cycle pump is also connected with described triple effect material outlet tube.

7. the waste heat using drying machine according to claim 6 be evaporated concentrate system it is characterised in that：Described three Effect separator air vent is connected with described pumping house steward, and the described outlet of pumping house steward and the condenser on condenser shell side top enter QI KOU is connected, and the condenser exhaust gas mouth of described condenser shell side bottom is connected with the entrance of vacuum pump；Described condenser shell side bottom The condenser condensate drain outlet in portion is connected with the entrance of Condensed water collection tank, and the top of described Condensed water collection tank is total with described pumping Pipe is connected, and the bottom of described Condensed water collection tank is connected with the entrance of solidifying water delivery pump, and the outlet of described solidifying water delivery pump is led to respectively Cross valve to be connected with the filling pipe of described spray tank and Sewage Disposal；The triple effect heat exchange of described three-effect heat exchanger shell side bottom Device condensate drain outlet is connected with the entrance of described Condensed water collection tank.

8. the waste heat using drying machine according to claim 6 be evaporated concentrate system it is characterised in that：Described First, two, the shell side top of three-effect heat exchanger is respectively equipped with incoagulable gas bleeding point, and each described incoagulable gas bleeding point is respectively It is connected with described pumping house steward by auxiliary exhaust valve.

9. the waste heat using drying machine according to claim 6 be evaporated concentrate system it is characterised in that：Described First, two, the shell side bottom of three-effect heat exchanger be connected to one, two, triple effect shell side knockout drum, described one, two, three-effect heat exchanger Air vent respectively with described one, two, the top of triple effect shell side knockout drum be connected, described one, two, three-effect heat exchanger condensed water elimination Mouthful with described one, two, the bottom of triple effect shell side knockout drum is connected.

10. the waste heat using drying machine according to claim 7 be evaporated concentrate system it is characterised in that：Described First, two, three-effect heat exchanger and described condenser are many backhauls baffling shell-and-tube heat exchanger.