CN218507749U - Vinasse mixing inoculation batch fermentation system - Google Patents

Abstract

The utility model discloses a lees mixed inoculation batch fermentation system, the upper end of a wet lees lifting scraper blade I is butted with a wet material inlet of a tube bundle pre-drying machine, a dry material outlet of the tube bundle pre-drying machine is butted with a dried lees hopper through a dried lees transferring conveyor, the bottom of the dried lees hopper is provided with a dried lees conveying auger, the outlet of the dried lees conveying auger is connected with a lower end inlet of the dried lees lifting scraper blade, and the upper end outlet of the dried lees lifting scraper blade is butted with an inlet of a continuous mixing inoculation machine; the outlet at the upper end of the wet distiller's grain lifting scraper II and the strain injection pipe of the strain powder bin are also respectively butted with the inlet of the continuous mixing inoculation machine, the outlet of the continuous mixing inoculation machine is butted with the inlet at the lower end of the bucket elevator through the mixing inoculation auger, and the upper end of the bucket elevator is butted with the feeding chute of the corresponding distiller's grain fermentation machine through the fermentation feeding auger. The system adopts dry and wet material mixing inoculation, multi-batch fermentation and continuous discharging, improves the utilization rate of equipment, reduces the engineering investment and reduces the energy consumption.

Description

Vinasse mixed inoculation batch fermentation system

Technical Field

The utility model relates to a lees fermentation system especially relates to a lees mixes batch fermentation system of inoculation, belongs to lees fermentation technical field.

Background

The vinasse is residue left after brewing wine of rice, wheat, sorghum and the like, is direct leftovers in the brewing process, contains grains in a certain proportion, can save concentrate for feeding cattle, contains rich crude protein which is 2-3 times higher than the content of corn, also contains various trace elements, vitamins, saccharomycetes and the like, and has very high content of lysine, methionine and tryptophan, which can not be provided by crop straws.

Since the distillers 'grains have high fiber content (rice hull), low energy content, high water content and are not easy to store, the distillers' grains are used as waste in distillery and are accumulated everywhere.

The vinasse raw material can be used as feed, but if the vinasse raw material is directly fed to animals, the situation that the animals suffer from insufficient nutrition, indigestion and the like can be caused, and the animals can be seriously poisoned by alcohol. And the vinasse is fermented, so that the harmful substances in the vinasse can be absorbed and decomposed by means of the metabolic process of the probiotics, and the effect of non-toxic treatment is achieved. After the vinasse is fermented, the content of yeast protein and organic acid is increased, the digestion and absorption of animals are facilitated, the intestinal health of the animals is improved, the vinasse is used as leftovers, the vinasse fermented feed has the characteristic of low price, can be effectively used as a supplementary raw material in the breeding industry, has good use effect and economic benefit, and promotes the development of the vinasse fermented feed.

Because the vinasse has high moisture, small volume weight and large unit volume and needs aerobic fermentation, the traditional production mode of fermentation and drying in an aerobic fermentation disc or fermentation in a continuous fermentation machine and drying in a roller dryer is mostly adopted in the past.

The traditional vinasse mode has the following disadvantages:

a) The fermentation and the drying are carried out in the fermentation tower, so that the equipment utilization rate and the production efficiency are low, and the investment is overlarge;

b) The raw materials have high moisture content, and heat in the production process is not fully recycled, so that heat waste is caused, the energy consumption is increased, and the production cost of the product is increased;

c) Due to discontinuous fermentation and large peak discharge, the required tail gas treatment device is very large, the investment of tail gas treatment equipment is high, the return rate is low, and the production is not profitable; if the waste water is directly discharged, not only energy is wasted, but also the environment is polluted;

d) The fermentation tower is special equipment for fermentation, the equipment has low temperature resistance, and the process of drying the fermentation materials in the fermentation machine is adopted, so that low-air-temperature drying is absolutely adopted, the drying temperature and the heat utilization efficiency are reduced, the energy consumption is high, and the production cost of the product is improved; and the drying is not uniform, which causes unstable product quality, therefore, the method is not suitable for being used as a drying material.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the problem that exists among the prior art, provide a lees mixed inoculation batch fermentation system, adopt the mixed inoculation of dry wet material, many batches of timesharing fermentation, the continuous ejection of compact, improve equipment utilization rate reduces the engineering investment, reduces the energy consumption.

For solving the technical problem, the utility model discloses a lees mixes batch fermentation system of inoculation, including wet lees hopper one and wet lees hopper two, the bottom of wet lees hopper one is equipped with wet lees and carries auger one, the export of wet lees transport auger one links to each other with the lower extreme entry of wet lees promotion scraper blade one, the upper end export of wet lees promotion scraper blade one docks with the wet material entry of tube bank predrying machine, the dry material export of tube bank predrying machine docks with the lees hopper through lees of dried grain commentaries on classics material conveyer, the bottom of lees hopper is equipped with lees of dried grain and carries the auger, lees of dried grain carries the export of auger and links to each other with lees of dried grain promotion scraper blade's lower extreme entry, lees of dried grain promotion scraper blade upper end export and the entry butt joint of continuous mixing inoculator; the bottom of wet lees hopper two is equipped with wet lees and carries auger two, the export of wet lees transport auger two links to each other with the lower extreme entry of wet lees promotion scraper blade two, the upper end export of wet lees promotion scraper blade two and the bacterial filling tube in fungus powder storehouse also respectively with the entry butt joint of continuous mixing inoculator, the export of continuous mixing inoculator is through the lower extreme entry butt joint of mixing inoculation auger and bucket elevator, and the upper end export of bucket elevator is through the feeding elephant trunk butt joint of fermentation feed auger and corresponding lees fermentation machine.

As an improvement of the utility model, the outlet of the top exhaust hood of the tube bundle predrying machine is connected with the air inlet of the draught fan, the air outlet of the draught fan is connected with the air inlet of the salon, the top discharge port of the salon is connected with the predrying tail gas discharge pipe, and the bottom discharge port of the salon is connected with the middle inlet of the wet distiller grain lifting scraper I through the discharge valve; the periphery of the top exhaust hood of the tube bundle pre-drying machine and the periphery of the shakelong are respectively provided with a heat tracing steam coil, the heat tracing steam coil reaches the steam inlet of the tube bundle pre-drying machine is respectively connected with a steam generation pipe, and the heat tracing steam coil reaches the drain outlet of the tube bundle pre-drying machine is respectively connected with a high-temperature condensate pipe.

As a further improvement of the utility model, the outlet of the pre-drying tail gas discharge pipe is connected with the lower air inlet of the washing tower, the top exhaust port of the washing tower is connected with the lower inlet of the waste heat absorption tower, the top exhaust port of the waste heat absorption tower is connected with the lower inlet of the odor absorption tower, the top exhaust port of the odor absorption tower is communicated with the atmosphere through the absorption tower exhaust fan, the water pool water replenishing port of the odor absorption tower is connected with the reclaimed water pipe, the water pool water outlet of the odor absorption tower is connected with the inlet of the reclaimed water pump, and the outlet of the reclaimed water pump is connected with the spray pipe on the upper part of the odor absorption tower through the circulating pump; the odor absorption tower is also matched with an alkali tank, an inlet pipeline of an alkali pump is inserted into the lower part of the alkali tank, and an outlet pipeline of the alkali pump is connected with a water tank alkali adding port of the odor absorption tower.

As a further improvement of the present invention, the lower water outlet of the waste heat absorption tower is connected to the inlet of the waste heat absorption circulation pump, the outlet of the waste heat absorption circulation pump is connected to the hot side inlet of the high temperature heat exchanger, the hot side outlet of the high temperature heat exchanger is connected to the hot side inlet of the low temperature heat exchanger, the hot side outlet of the low temperature heat exchanger is connected to the waste heat absorption circulation pipe, and the waste heat absorption circulation pipe is connected to the upper spray pipe of the waste heat absorption tower; the low-temperature hot water pipe is connected with an inlet of the warm water pump, an outlet of the warm water pump is connected with a cold side inlet of the low-temperature heat exchanger, a cold side outlet of the low-temperature heat exchanger is connected with a cold side inlet of the high-temperature heat exchanger, and a cold side outlet of the high-temperature heat exchanger is connected with the high-temperature hot water pipe.

As a further improvement, the lower part outlet of the washing tower is connected with the reclaimed water tank, the circulating water outlet of the reclaimed water tank is connected with the inlet of the washing circulating pump, the outlet of the washing circulating pump is connected with the upper spraying pipe of the washing tower through the washing circulating pipe, the bottom water outlet of the reclaimed water tank is connected with the inlet of the washing sewage pump, the outlet of the washing sewage pump is connected with the reclaimed water tank return pipe and the sewage discharge pipe, and the water replenishing port of the reclaimed water tank is connected with the reclaimed water pipe.

As a further improvement of the utility model, the air inlet of each vinasse fermentation machine is sequentially provided with a secondary preheater and a tertiary preheater along the air flowing direction, the hot side inlet of the secondary preheater is connected with the high-temperature hot water pipe, and the hot side outlet of the secondary preheater is connected with the low-temperature hot water pipe; and a hot side inlet of the three-stage preheater is connected with the high-temperature condensate pipe, and a cold side outlet of the three-stage preheater is connected with a condensate water return pipe.

As a further improvement of the utility model, the air outlet of each vinasse fermentation machine is respectively connected with the hot side inlet of the primary preheater through a fermentation tail gas discharge pipe, the hot side outlet of the primary preheater is connected with a fermentation tail gas treatment system, the cold side inlet of the primary preheater is communicated with the atmosphere, the cold side outlet of the primary preheater is connected with the inlet of the air blower through a fresh air door, and the outlet of the air blower is connected with the cold side inlet of the secondary preheater; and the air return inlet of the vinasse fermentation machine is also connected with the inlet of the air blower through an air return adjusting door.

As the utility model discloses a further improvement, each be equipped with ceiling heat tracing pipe in lees fermentation machine's the ceiling respectively, the entry and the condensate pump's of each ceiling heat tracing pipe export link to each other, condensate pump's entry with high temperature condensate pipe links to each other, and the export of each ceiling heat tracing pipe links to each other with the condensate return pipe.

Compared with the prior art, the utility model discloses following beneficial effect has been obtained: 1. because the water content of the raw material vinasse is too high and the water is easy to seep out when the raw material vinasse enters the fermentation machine, the system firstly pre-dries part of the raw material vinasse, then mixes the part of the raw material vinasse with wet raw material vinasse, inoculates the raw material vinasse after adjusting the water content properly, and carries out multi-batch time-sharing fermentation on the inoculated vinasse, the water content is reduced, so that the actual throughput of each fermentation machine is larger, the utilization rate of equipment is improved, and the engineering investment is reduced;

2. the raw material vinasse is pre-dried by using a low-energy-consumption tube bundle pre-dryer, so that the drying efficiency is high, and the energy unit consumption is low; the waste heat in the drying, heat tracing and tail gas is fully recycled, the inlet air of the fermentation machine is preheated, and the energy consumption is further reduced;

3. the heat of the tail gas of the vinasse fermentation machine is fully utilized, the reflux is reasonably carried out, and the heat tracing is carried out on the roof, so that the mixed bacteria pollution caused by dripping of condensed water is avoided;

4. the whole system has low equipment investment and operation cost and stable product quality.

Drawings

The invention is described in further detail below with reference to the attached drawings and the detailed description, wherein the drawings are provided for reference and illustration purposes only and are not intended to limit the invention.

FIG. 1 is a flow chart of a pre-drying system for raw material distiller's grains according to the present invention;

FIG. 2 is a flow chart of the pre-drying tail gas treatment system of the present invention;

FIG. 3 is a flow chart of the mixed inoculation system of the present invention;

FIG. 4 is a system diagram of the fermentation machine of the present invention.

In the figure: 1. a wet distiller's grains hopper I; 1a, a first wet vinasse conveying auger; 2. a first wet vinasse lifting scraper plate; 3. a tube bundle pre-dryer; 3a, a top exhaust hood; 4. a distiller's dried grain conveyor; 5. an induced draft fan; 6. a saxolone; 7. a washing tower; 7a, a middle water tank; 7b, washing a circulating pump; 7c, a washing circulating pipe; 7d, washing a sewage pump; 7e, a reclaimed water tank return pipe; 8. a waste heat absorption tower; 8a, a waste heat absorption circulating pump; 8b, a waste heat absorption circulating pipe; 8c, a waste heat absorption drain pipe; 9. a warm water pump; 10. an odor absorption tower; 10a, a reclaimed water pump; 10b, an exhaust fan of the absorption tower; 10c, an alkali tank; 10d, an alkali pump; 11. a dried distillers' grain hopper; 11a, conveying a packing auger for the dried distillers grains; 12. a distiller's dried grain lifting scraper; 13. a second wet vinasse hopper; 13a, conveying a second wet distiller's grain conveying auger; 14. a second wet vinasse lifting scraper plate; 15. a fungus powder bin; 16. a continuous mixed inoculation machine; 17. mixing and inoculating the auger; 18. a bucket elevator; 19. a fermentation feeding main auger; 20. a fermentation material-separating auger; 21. a vinasse fermentation machine; 21a, an inlet chute of the fermentation machine; 21b, an outlet chute of the fermentation machine; 21c, a condensate pump; 21d, an exhaust adjusting door; 21e, a fermentation tail gas discharge pipe; 21f, a return air adjusting door; 21g, a fresh air door; 21h, a blower; 22. a fermentation tail gas treatment system; G1. a raw steam pipe; G2. a high-temperature condensate pipe; G3. a pre-drying tail gas discharge pipe; G4. a reclaimed water pipe; G5. a sewage discharge pipe; G6. a low temperature hot water pipe; G7. a high temperature hot water pipe; G8. a condensed water return pipe; H1. a low temperature heat exchanger; H2. a high temperature heat exchanger; H3. a primary preheater; H4. a secondary preheater; H5. a tertiary preheater.

Detailed Description

In the following description of the present invention, the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, and do not mean that the device must have a specific orientation.

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

As shown in fig. 1 to 4, the system for fermenting a batch of distiller's grains by mixing and inoculating comprises a wet distiller's grains hopper, a dry distiller's grains hopper 11, a tube bundle pre-dryer 3, a continuous mixing and inoculating machine 16, a distiller's grains fermenting machine 21, a washing tower 7, a waste heat absorption tower 8 and an odor absorption tower 10.

As shown in figure 1, a wet distiller's grain conveying auger I1 a is arranged at the bottom of a wet distiller's grain hopper I1, an outlet of the wet distiller's grain conveying auger I1 a is connected with a lower end inlet of a wet distiller's grain lifting scraper I2, and an upper end outlet of the wet distiller's grain lifting scraper I2 is butted with a wet material inlet of a tube bundle pre-dryer 3.

The export of the top exhaust hood 3a of tube bank predrying machine 3 links to each other with the air intake of draught fan 5, and the air outlet of draught fan 5 links to each other with the air intake of shakelong 6, and the top row mouth of shakelong 6 links to each other with predrying tail gas delivery pipe G3, and the middle part entry that the mouth was arranged through discharge valve and wet lees promotion scraper blade 2 to the bottom row mouth of shakelong 6 links to each other.

The forklift feeds the raw material wet distiller's grains with the water content of 65 percent by weight into a wet distiller's grain hopper I1, a wet distiller's grain conveying auger I1 a conveys the wet distiller's grains out and feeds the wet distiller's grains into the lower end of a wet distiller's grain lifting scraper I2, and the wet distiller's grain lifting scraper I2 conveys the wet distiller's grains upwards and feeds the wet distiller's grains into the feed end, namely the rear end, of the tube bundle pre-dryer 3. The shaft end of the discharge end of the tube bundle pre-drying machine 3 is provided with a rotary joint, and a steam inlet of the rotary joint is connected with the raw steam pipe G1. Raw steam enters the tube bundle from the discharge end, namely the front end, in the drying process, the steam in the tube bundle advances from front to back, the vinasse outside the tube bundle advances from back to front while stirring, and the raw steam and the vinasse reversely flow. The just entered vinasse has highest humidity and lowest temperature, and still has better heating and drying effects when contacting with the exhausted steam after heat release; along with the stirring of lees and forward movement, self humidity reduces, the temperature improves, and the fresh steam heat transfer that just gets into the higher temperature has fine heating and drying effect throughout, and the dried lees of doing after the drying is discharged from the drier export of front end, and the moisture content falls to 15% wt.

The drain outlet of the tube bundle pre-dryer 3 is connected with a high-temperature condensate pipe G2, and the drained 150 ℃ high-temperature condensate is collected and used as a heat source of the vinasse fermentation machine 21.

The top of tube bank predrying machine 3 is equipped with top exhaust hood 3a, and under the suction effect of draught fan 5, the hot tail gas that the evaporation produced is heated to the wet lees is discharged from top exhaust hood 3a. Because the moisture content in this tail gas is high, air relative humidity is high, easily form the comdenstion water at top exhaust hood 3a, form the dewfall phenomenon, the condensation water that forms after the dewfall drips to the heat exchange tube of tube bank desiccator on, can accelerate the corruption of heat exchange tube, consequently be equipped with the companion's heat steam coil pipe in the periphery of top exhaust hood 3a, avoid top exhaust hood 3a department to form the dewfall, companion's heat steam coil pipe's entry links to each other with give birth to steam pipe G1, companion's comdenstion water of heat steam coil pipe gets into high temperature condensate pipe G2 and collects.

The draught fan 5 carries out centrifugal separation in sending into the husky ke long 6 with hot tail gas, and the granule that separates out gets back to wet lees through the discharge valve and promotes scraper blade 2, and 85 ℃'s high temperature tail gas is discharged through predrying tail gas delivery pipe G3. The department of the shakelong 6 also easily forms the comdenstion water, form the dewfall phenomenon, the water mixes with the material after the dewfall and forms wet material, bond on the inner wall of the shakelong 6, easily cause to block up and influence normal production, the periphery of the shakelong 6 also is equipped with the companion's heat steam coil pipe, give the inside air heating of the shakelong 6, reduce air relative humidity, make in the air steam can not form the comdenstion water, the comdenstion water of companion's heat steam coil pipe also gets into high temperature condensate pipe G2 and collects.

As shown in fig. 2, the outlet of the pre-drying tail gas discharge pipe G3 is connected to the lower gas inlet of the washing tower 7, the lower water outlet of the washing tower 7 is connected to the middle water tank 7a, the circulation water outlet of the middle water tank 7a is connected to the inlet of the washing circulation pump 7b, and the outlet of the washing circulation pump 7b is connected to the upper shower pipe of the washing tower 7 through the washing circulation pipe 7c. The bottom water outlet of the middle water tank 7a is connected with the inlet of a washing sewage pump 7d, the outlet of the washing sewage pump 7d is connected with a middle water tank water return pipe 7e and a sewage discharge pipe G5, and the water replenishing port of the middle water tank 7a is connected with a middle water pipe G4.

The tail gas of the tube bundle pre-dryer 3 contains dust, and has high relative humidity, high heat content and odor. In order to reduce the dust concentration and smell in the tail gas emission, the tail gas is firstly washed in a washing tower 7 by utilizing the heat in the tail gas. Reclaimed water COD after sewage treatment is less than or equal to 300mg/L, and is supplemented into a reclaimed water tank 7a through a reclaimed water pipe G4, a washing circulating pump 7b extracts the reclaimed water, and the reclaimed water is sent into a spraying pipe at the upper part of a washing tower 7 through a washing circulating pipe 7c, two layers of nozzles which are annularly arranged are arranged in the washing tower 7, a conical mist spraying surface of each nozzle covers the cross section of the whole washing tower 7, and dust is paved into the circulating water. The bottom of the washing tower 7 is provided with a sedimentation tank, and the overflow of the sedimentation tank enters a middle water tank 7a for circulation. When the circulating water reaches regulation emission concentration, start washing dredge pump 7d, discharge sewage circulating water through sewage discharge pipe G5 to sewage treatment plant, the exhaust emission department at scrubbing tower 7 top is equipped with the defogging device, and the filiform stainless steel clearance ball is adopted in the defogging, and area of contact is big, and the defogging is effectual.

An exhaust port at the top of the washing tower 7 is connected with an inlet at the lower part of the waste heat absorption tower 8, a water outlet at the lower part of the waste heat absorption tower 8 is connected with an inlet of a waste heat absorption circulating pump 8a, an outlet of the waste heat absorption circulating pump 8a is connected with an inlet at the hot side of the high-temperature heat exchanger H2, an outlet at the hot side of the high-temperature heat exchanger H2 is connected with an inlet at the hot side of the low-temperature heat exchanger H1, an outlet at the hot side of the low-temperature heat exchanger H1 is connected with a waste heat absorption circulating pipe 8b, and the waste heat absorption circulating pipes 8b are respectively connected with a spray pipe at the upper part of the waste heat absorption tower 8. The waste heat absorption circulation pipe 8b is also connected to the sewage discharge pipe G5 through a waste heat absorption drain pipe 8c. The low-temperature hot water pipe G6 is connected with an inlet of the warm water pump 9, an outlet of the warm water pump 9 is connected with a cold side inlet of the low-temperature heat exchanger H1, a cold side outlet of the low-temperature heat exchanger H1 is connected with a cold side inlet of the high-temperature heat exchanger H2, and a cold side outlet of the high-temperature heat exchanger H2 is connected with the high-temperature hot water pipe G7.

The temperature of tail gas is reduced to 75 ℃ after dust removal through a washing tower 7, the tail gas enters from the lower part of a waste heat absorption tower 8, a first-stage spray, a second-stage packing layer and a demister are sequentially arranged in the waste heat absorption tower 8 from bottom to top, a sedimentation tank is arranged at the bottom of the waste heat absorption tower 8, upper clear liquid of the sedimentation tank is sequentially sent to the hot side of a high-temperature heat exchanger H2 and the hot side of a low-temperature heat exchanger H1 through a waste heat absorption circulating pump 8a, the clear liquid enters an upper spray pipe through a waste heat absorption circulating pipe 8b after being cooled, the upper spray pipe is located below the second-stage packing layer and located below the demister, the demister is located below a top exhaust port, each nozzle of the upper spray pipe sprays a conical fog-shaped spray surface to cover the cross section of the whole waste heat absorption tower 8, the heat in the tail gas is absorbed by circulating water, the heat exchange area of the circulating water and the tail gas is further increased through the second-stage packing layer, two layers of packing are adopted to ensure that the circulating water passes through the upper-stage packing layer and then is more uniform to reach the lower-stage packing layer, contact of the circulating water and the tail gas, and the tail gas is more uniform, and the contact of the circulating water and the spraying efficiency is increased.

The high-temperature heat exchanger H2 and the low-temperature heat exchanger H1 both adopt plate heat exchangers, low-temperature warm water at 40 ℃ is sent to the cold side of the low-temperature heat exchanger H1 by a warm water pump 9, and the warm water is heated to 60 ℃ by absorbing the heat of circulating water by waste heat when entering the cold side of the high-temperature heat exchanger H2 and is used as an air preheating heat source of the vinasse fermentation machine 21.

The top exhaust port of the waste heat absorption tower 8 is connected with the lower inlet of the odor absorption tower 10, the top exhaust port of the odor absorption tower 10 is communicated with the atmosphere through an absorption tower exhaust fan 10b, the water pool water supply port of the odor absorption tower 10 is connected with a reclaimed water pipe G4, the water pool water discharge port of the odor absorption tower 10 is connected with the inlet of a reclaimed water pump 10a, and the outlet of the reclaimed water pump 10a is connected with a spray pipe at the upper part of the odor absorption tower 10 through a circulating pump; the odor absorption tower 10 is also provided with an alkali tank 10c, an inlet pipeline of an alkali pump 10d is inserted into the lower part of the alkali tank 10c, and an outlet pipeline of the alkali pump 10d is connected with a water pool alkali adding opening of the odor absorption tower 10.

The tail gas discharged from the top of the waste heat absorption tower 8 enters from the lower part of the odor absorption tower 10, first-stage spraying, a second-stage packing layer and a demister are sequentially arranged in the odor absorption tower 10 from top to top, a conical mist spray surface of each nozzle covers the cross section of the whole absorption tower, the circulating water adopts the reclaimed water added with alkali liquor, the peculiar smell in the tail gas is acidic substances and water soluble substances, the peculiar smell is dissolved in the alkali liquor, the tail gas is discharged outdoors, the second-stage packing layer is used for further increasing the heat exchange area of the circulating water and the tail gas, two layers of packing are adopted for uniformly scattering the circulating water to the lower-layer packing layer after passing through the upper-layer packing layer, the contact between the circulating water and the tail gas is increased more uniformly, and the absorption efficiency is increased. And discharging the circulating water to a sewage treatment plant after the circulating water reaches the set concentration, and supplementing the reclaimed water of the sewage treatment plant into the equipment to be used as washing circulating water. The amount of the liquid caustic added is controlled by a pH value sensor in the circulating water. The drainage of the sedimentation tank at the bottom of the odor absorption tower 10 is discharged into a sewage treatment plant through a sewage discharge pipe G5.

As shown in FIG. 3, a dried material outlet of the tube bundle pre-dryer 3 is butted with a dried distillers ' grain hopper 11 through a dried distillers ' grain transferring conveyor 4, a dried distillers ' grain conveying auger 11a is arranged at the bottom of the dried distillers ' grain hopper 11, an outlet of the dried distillers ' grain conveying auger 11a is connected with a lower end inlet of a dried distillers ' grain lifting scraper 12, and an upper end outlet of the dried distillers ' grain lifting scraper 12 is butted with an inlet of a continuous mixing inoculation machine 16; the bottom of the wet distiller's grain hopper II 13 is provided with a wet distiller's grain conveying auger II 13a, the outlet of the wet distiller's grain conveying auger II 13a is connected with the lower end inlet of the wet distiller's grain lifting scraper II 14, the upper end outlet of the wet distiller's grain lifting scraper II 14 and the strain injection pipe of the strain powder bin 15 are respectively butted with the inlet of the continuous mixing inoculation machine 16, and the outlet of the continuous mixing inoculation machine 16 is butted with the lower end inlet of the bucket elevator 18 through the mixing inoculation auger 17.

The distiller's dried grain with water content of 15% is sent into a distiller's dried grain hopper 11 through a distiller's dried grain transfer conveyor 4 or a forklift, and sent into the lower end of a distiller's dried grain lifting scraper 12 by a distiller's dried grain conveying auger 11a, and the distiller's dried grain lifting scraper 12 sends the distiller's dried grain into an inlet of a continuous mixing inoculation machine 16; meanwhile, wet distiller's grains with the water content of 65 percent are conveyed into a wet distiller's grain hopper II 13 by a forklift, conveyed into the lower end of a wet distiller's grain lifting scraper II 14 by a wet distiller's grain conveying auger II 13a, and conveyed into an inlet of a continuous mixing inoculation machine 16 by the wet distiller's grain lifting scraper II 14; meanwhile, a stirrer is arranged in the fungus powder bin 15, a double-screw feeder is arranged at an outlet to ensure that the fungus powder does not arch, the fungus powder with the water content of 12 percent also enters an inlet of the continuous mixing inoculation machine 16 through a strain injection pipe, dry and wet vinasse and the fungus powder move forward to an outlet end while being stirred and mixed in the continuous mixing inoculation machine 16, and the water content of the vinasse after mixing inoculation is 54 percent and is sent to the lower end of a bucket elevator 18 through a mixing inoculation auger 17. The upper end of the bucket elevator 18 is sent into the inlet of the fermentation feeding main auger 19, and the fermentation feeding main auger 19 feeds materials to the fermentation machine inlet slide pipes 21a of the corresponding vinasse fermentation machines 21 through the fermentation material separating augers 20.

As shown in fig. 4, the fermentation system is composed of vinasse fermentation machines 21, each vinasse fermentation machine 21 is an aerobic disc fermentation tower, an air inlet of each vinasse fermentation machine 21 is sequentially provided with a secondary preheater H4 and a tertiary preheater H5 along the air flow direction, a hot side inlet of the secondary preheater H4 is connected with a high-temperature hot water pipe G7, and a hot side outlet of the secondary preheater H4 is connected with a low-temperature hot water pipe G6; the hot side inlet of the third-stage preheater H5 is connected with the high-temperature condensate pipe G2, and the cold side outlet of the third-stage preheater H5 is connected with the condensate return pipe G8.

The air outlet of each vinasse fermentation machine 21 is respectively connected with the hot side inlet of a primary preheater H3 through a fermentation tail gas discharge pipe 21e, the hot side outlet of the primary preheater H3 is connected with a fermentation tail gas treatment system 22, the cold side inlet of the primary preheater H3 is communicated with the atmosphere, the cold side outlet of the primary preheater H3 is connected with the inlet of a blower 21H through a fresh air door 21g, and the outlet of the blower 21H is connected with the cold side inlet of a secondary preheater H4; the return air inlet of the distiller's grains fermenting machine 21 is also connected with the inlet of the blower 21h through a return air adjusting door 21f.

Wet distillers 'grains with water content of 54% enter the distillers' grains fermenting machine 21 from the inlet elephant trunk 21a of each fermenting machine, are uniformly spread on the material bed, and hot air passes through the material bed from bottom to top to carry out aerobic fermentation. The temperature of fermentation tail gas discharged from an exhaust adjusting door 21d on the upper part of the vinasse fermentation machine 21 is 45 ℃, fresh air entering a hot side of a primary preheater H3 preheats fresh air on a cold side to 30 ℃, fresh air at 30 ℃ is adjusted in flow rate by a fresh air door 21g, is mixed with return air from a return air adjusting door 21f and then is sent to an air inlet of a secondary preheater H4 by a blower 21H, high-temperature hot water at 60 ℃ enters the hot side of the secondary preheater H4 to carry out secondary heating on the mixed air, the water temperature is reduced by 40 ℃, and the mixed air returns to an inlet of a warm water pump 9 to circulate. The mixed air enters an air inlet of a tertiary preheater H5 next, the mixed air is heated in a tertiary mode by high-temperature condensate water at 150 ℃, the condensate water after heat release returns to a boiler room through a condensate water return pipe G8, and the mixed air is heated to 45 ℃ and enters the position below a fermentation material bed. The fermentation time of each batch is 20 hours, and because the feed water content is high, a part of water needs to be evaporated in the fermentation process, so that the discharge water content is reduced, and the drying energy consumption is reduced. Heated air is introduced into the fermentation machine to ventilate the fermentation material bed, and simultaneously, the materials are pre-dried, so that the discharging moisture of the fermentation machine is reduced, and the energy consumption of a drying section is saved. The water content of the fermented vinasse is 44%, and the fermented vinasse is discharged from a discharge hole of the vinasse fermentation machine 21 and then enters an outlet chute 21b of the fermentation machine. According to the feeding and discharging sequence, the fermented drying system can be used for continuous production.

The ceiling of the distiller's grains fermentation machine 21 is easy to generate condensed water, and the mixed bacteria pollution of materials is caused after the condensed water drops. In order to avoid the generation of condensed water on the ceilings, ceiling heat tracing pipes are respectively arranged in each ceiling, the inlets of the ceiling heat tracing pipes are connected with the outlets of a condensed water pump 21c, the inlets of the condensed water pump 21c are connected with a high-temperature condensed water pipe G2, the outlets of the ceiling heat tracing pipes are connected with a condensed water return pipe G8, and the condensed water after heat tracing returns to a boiler room through the condensed water return pipe G8.

The foregoing is only a preferred and practical embodiment of the present invention, and the basic principles, main features and advantages of the present invention have been shown and described, but not limited thereto, the scope of the present invention is not limited to the above-mentioned embodiments, and the present invention is not limited to the above-mentioned embodiments. In addition to the above embodiments, the present invention can have other embodiments without departing from the spirit and scope of the present invention. The utility model discloses still can have various changes and improvements, all adopt the technical scheme that equivalent replacement or equivalent transform formed, all fall in the protection scope that the utility model discloses required. The scope of the invention is defined by the appended claims and equivalents thereof. The undescribed technical features of the present invention can be realized by or using the prior art, and are not described herein again.

Claims (8)

1. The utility model provides a lees mixes inoculation batch fermentation system, includes wet lees hopper one and wet lees hopper two, its characterized in that: the bottom of the first wet vinasse hopper is provided with a first wet vinasse conveying auger, an outlet of the first wet vinasse conveying auger is connected with a lower end inlet of a first wet vinasse lifting scraper, an upper end outlet of the first wet vinasse lifting scraper is butted with a wet material inlet of a tube bundle pre-drying machine, a dry material outlet of the tube bundle pre-drying machine is butted with a dry vinasse hopper through a dry vinasse transferring conveyor, the bottom of the dry vinasse hopper is provided with a dry vinasse conveying auger, an outlet of the dry vinasse conveying auger is connected with a lower end inlet of the dry vinasse lifting scraper, and an upper end outlet of the dry vinasse lifting scraper is butted with an inlet of a continuous mixing inoculation machine;

the bottom of wet lees hopper two is equipped with wet lees and carries auger two, the export of wet lees transport auger two links to each other with the lower extreme entry of wet lees promotion scraper blade two, the upper end export of wet lees promotion scraper blade two and the bacterial filling tube in fungus powder storehouse also respectively with the entry butt joint of continuous mixing inoculator, the export of continuous mixing inoculator is through the lower extreme entry butt joint of mixing inoculation auger and bucket elevator, and the upper end export of bucket elevator is through the feeding elephant trunk butt joint of fermentation feed auger and corresponding lees fermentation machine.

2. The distiller's grain mixed inoculated batch fermentation system of claim 1, wherein: an outlet of a top exhaust hood of the tube bundle predrying machine is connected with an air inlet of an induced draft fan, an air outlet of the induced draft fan is connected with an air inlet of a shakelong, a top discharge port of the shakelong is connected with a predrying tail gas discharge pipe, and a bottom discharge port of the shakelong is connected with a middle inlet of the wet distiller grain lifting scraper I through a discharge valve; the periphery of the top exhaust hood of the tube bundle pre-drying machine and the shakelong is respectively provided with a heat tracing steam coil, the heat tracing steam coil reaches the steam inlet of the tube bundle pre-drying machine is respectively connected with a steam generation pipe, the heat tracing steam coil reaches the drain outlet of the tube bundle pre-drying machine is respectively connected with a high-temperature condensate pipe.

3. The distillers mixed inoculated batch fermentation system of claim 2, wherein: the outlet of the pre-drying tail gas discharge pipe is connected with the lower gas inlet of the washing tower, the top exhaust port of the washing tower is connected with the lower inlet of the waste heat absorption tower, the top exhaust port of the waste heat absorption tower is connected with the lower inlet of the odor absorption tower, the top exhaust port of the odor absorption tower is communicated with the atmosphere through an absorption tower exhaust fan, the water pool water replenishing port of the odor absorption tower is connected with a reclaimed water pipe, the water pool water outlet of the odor absorption tower is connected with the inlet of a reclaimed water pump, and the outlet of the reclaimed water pump is connected with the spray pipe at the upper part of the odor absorption tower through a circulating pump; the odor absorption tower is also matched with an alkali tank, an inlet pipeline of an alkali pump is inserted into the lower part of the alkali tank, and an outlet pipeline of the alkali pump is connected with a water tank alkali adding port of the odor absorption tower.

4. The distiller's grain mixed inoculated batch fermentation system of claim 3, wherein: the lower water outlet of the waste heat absorption tower is connected with the inlet of a waste heat absorption circulating pump, the outlet of the waste heat absorption circulating pump is connected with the hot side inlet of a high-temperature heat exchanger, the hot side outlet of the high-temperature heat exchanger is connected with the hot side inlet of a low-temperature heat exchanger, the hot side outlet of the low-temperature heat exchanger is connected with a waste heat absorption circulating pipe, and the waste heat absorption circulating pipes are respectively connected with the upper spray pipe of the waste heat absorption tower;

the low-temperature hot water pipe is connected with an inlet of the warm water pump, an outlet of the warm water pump is connected with a cold side inlet of the low-temperature heat exchanger, a cold side outlet of the low-temperature heat exchanger is connected with a cold side inlet of the high-temperature heat exchanger, and a cold side outlet of the high-temperature heat exchanger is connected with the high-temperature hot water pipe.

5. The distiller's grain mixed inoculated batch fermentation system of claim 3, wherein: the lower water outlet of the washing tower is connected with the reclaimed water tank, the circulating water outlet of the reclaimed water tank is connected with the inlet of a washing circulating pump, the outlet of the washing circulating pump is connected with the upper spray pipe of the washing tower through a washing circulating pipe, the bottom water outlet of the reclaimed water tank is connected with the inlet of a washing sewage pump, the outlet of the washing sewage pump is connected with a reclaimed water tank return pipe and a sewage discharge pipe, and the water replenishing port of the reclaimed water tank is connected with a reclaimed water pipe.

6. The distiller's grain mixed inoculated batch fermentation system of claim 4, wherein: the air inlet of each vinasse fermentation machine is sequentially provided with a secondary preheater and a tertiary preheater along the air flowing direction, the hot side inlet of the secondary preheater is connected with the high-temperature hot water pipe, and the hot side outlet of the secondary preheater is connected with the low-temperature hot water pipe; and a hot side inlet of the three-stage preheater is connected with the high-temperature condensate pipe, and a cold side outlet of the three-stage preheater is connected with a condensate water return pipe.

7. The distillers mixed inoculated batch fermentation system of claim 6, wherein: the air outlet of each vinasse fermentation machine is respectively connected with the hot side inlet of the primary preheater through a fermentation tail gas discharge pipe, the hot side outlet of the primary preheater is connected with a fermentation tail gas treatment system, the cold side inlet of the primary preheater is communicated with the atmosphere, the cold side outlet of the primary preheater is connected with the inlet of an air blower through a fresh air door, and the outlet of the air blower is connected with the cold side inlet of the secondary preheater; and the air return inlet of the vinasse fermentation machine is also connected with the inlet of the air blower through an air return adjusting door.

8. The distiller's grain mixed inoculated batch fermentation system of claim 2, wherein: ceiling heat tracing pipes are respectively arranged in the ceilings of the vinasse fermentation machines, inlets of the ceiling heat tracing pipes are connected with outlets of condensate pumps, inlets of the condensate pumps are connected with the high-temperature condensate pipes, and outlets of the ceiling heat tracing pipes are connected with a condensate return pipe.

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