CN101235391B - Method and system for continuously separating ethanol and utilizing residual heat based on solid-state fermentation material - Google Patents
Method and system for continuously separating ethanol and utilizing residual heat based on solid-state fermentation material Download PDFInfo
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Abstract
The invention relates to a method and a system for continuously separating alcohol and utilizing residual heat on the basis of solid state fermentation material, which belongs to the technical field of biomass fuel alcohol. The method mainly comprises the following steps: tight-line pumping, feeding into tower, distributing, stripping alcohol, discharging residue, utilizing residual heat and the like. The system achieves residual heat reutilization through the following two approaches which comprises firstly, looping back residual liquid to outer cylinder clamp ferrules of a closed ring groove rotating disc stripping tower, heating up material and closed tunnel outer clamp ferrules preheating fermentation material, secondly, complementing solid state distillation steam consumption through electrically heating. The alcohol-residue continuous separation technique and closed ring groove rotating disc alcohol stripping tower which are proposed by the invention are suitable for stripping alcohol in solid state fermentation products of sugar or starch such as sweet sorghum stalks and the like, which achieves a goal of automatically feeding and discharging, and continuously separating alcohol and residue, and the method of the invention effectively utilizes reactor residual liquid hidden heat, which complements partial steam gas, and achieves the superiorities of high net energy ratio of solid state fermentation path sweet sorghum alcohol and low environmental load.
Description
Technical field
The present invention relates to a kind ofly (comprise other saccharine materials based on sweet sorghum stalk; as beet, sugarcane, jerusalem artichoke etc.) solid-state fermentation material; integral method and system that continuously separating ethanol and residual heat integrative utilize; particularly a kind of poor continuous isolating integrated technology of slag-ethanol of mass-producing and airtight annular groove rotating-disk stripping tower equipment of being suitable for; and, belong to the biofuel technical field by reducing production energy consumption and realize that waste heat utilizes again with follow-up rectification cell organic integration.
Background technology
Biological liquid fuel is at present internationally recognized unique renewable energy source that can substitute gasoline and diesel oil at transport field on a large scale, along with rise in oil price and common people to C0
2The concern that reduces discharging, the biological liquid fuel industry is in the crossroad.Mainly be alcohol fuel and biofuel at present, wherein alcohol fuel accounts for more than 85%.1,540,000 tons of China's alcohol fuel output in 2006 substitute 3% transportation fuel oil, have demonstrated effects of energy saving and emission reduction and pulling agriculture-countryside-farmer's effect.Country has proposed to increase newly in 2010 the target of 2,000,000 tons of non-grain alcohol fuels in " the medium-term and long-term development program of renewable energy source ".
Produce alcohol fuel with sweet broomcorn straw, obtained extensive approval in world many countries, its primary goal is Technological Economy, i.e. the energy input-output ratio.Up to now, although obtained remarkable effect in links such as sweet sorghum breeding, plantations, the ethanol conversion technology does not realize that all the time commercialization breaks through.Therefore, try to explore sweet sorghum alcohol production technology efficient, low-cost, cleaning and seem particularly urgent.
Solid-state and liquid two kinds of fermentation modes are mainly adopted in sweet sorghum fuel ethanol production.Liquid fermentation method normally extracts juice with the multistage squeezing of bright sweet sorghum stalk and ferments.States such as the U.S., India, Romania use for reference sugarcane fuel ethanol production technology and explore with regard to the sweet sorghum alcohol production, multinomial relevant patent has also been declared by China, but liquid fermentation method exists a series of cruxs to be difficult to capture: also residual in the stalk slag after the squeezing have fermentable sugars branch, a utilization of not fermented; The sweet sorghum phase of squeezing the juice lacks, with anniversary continuous production incompatibility; Sterilization was preserved after Chinese sorghum juice was stored and needed to concentrate, and energy consumption is big; Ability ethanol fermentation behind the concentrated syrup thin up, the waste water generation is big, and tooling cost is difficult to bear, and the liquid state fermentation route is difficult to realize commercialization; It is that sweet Chinese sorghum pole is pulverized back direct fermentation that solid state fermentation is produced alcohol fuel, have special advantages, can fundamentally overcome the congenital deficiency of liquid state fermentation, reduce requirement raw materials pretreatment intensity, the waste water generation is little simultaneously, can significantly improve alcohol yied.Chinese scholars is produced sweet sorghum ethanol to solid state fermentation and explored, but majority rests on laboratory lab scale level, and its research emphasis is placed on the fermentation engineering, and is not enough to fermentation material-ethanol Separation Research; And the industrial traditional liquor making method that often adopts is backward in technique, and labour intensity is big, and fermentation period is grown and inefficiency; Simultaneously, tunning is solid-state material, " rice steamer bucket " distills and cross the vapour condensation technology can only be periodical operation, labour intensity is big, obtain the thick alcoholic solution of the following different number of degrees of 70% (v/v), consume a large amount of heating steam and heat-eliminating medium, make its production cost high, and can't realize that commercialization operates on a large scale.Person more very, traditional solid state distillation technology does not all have deep research theoretical with technical elements.
Therefore; 200710080388.0) and invention " a kind of method and system " (application number: on the basis 200710100322.3) at aforementioned invention " a kind of prepare the alcoholic acid method and system " (application number: based on the sweet sorghum stalk solid ferment material separating alcohol based on the sweet sorghum stalk solid fermentation; based on sweet sorghum and sugarcane solid-state fermentation material; continuous isolation integral technology of a kind of poor slag-ethanol and airtight annular groove rotating-disk stripping tower equipment are proposed; produce the needs of alcohol fuel to adapt to modern mass-producing solid state fermentation route, reduce the ethanol separating energy consumption and realize the residual heat integrative utilization.
Stalk slag-ethanol disclosed by the invention separates continuously and residual heat integrative utilizes integrated technique and airtight annular groove rotating-disk stripping tower key equipment thereof, can carry out continuous ethanol stripping to the fermentation material that obtains through solid state fermentation, the constant composition alcohol vapour of gained is fed into follow-up rectifying tower as vapour phase, and the poor slag after ethanol separates can self-emptying and is sent to poor slag deep processing unit by belt conveyor.Carry out waste heat by the still raffinate that rectification working process is discharged and utilize again, to replenish solid state distillation procedure division steam consumption.The remarkable energy efficient of this integrated technology and reducing cost, and satisfy the requirement of modern industrialization quantity-produced, will create conditions to biomass as resources and recovery energy.
Summary of the invention
How what the objective of the invention is to exist in current solid state fermentation production sweet sorghum ethanol process extracts ethanol continuously to adapt to modern this crucial common problem of large-scale commercial applications production needs from solid-state fermentation material, based on the contriver propose poor slag-ethanol separates continuously and residual heat integrative utilizes integrated technique and airtight annular groove rotating-disk stripping tower equipment based on non-grain raw material (sweet sorghum with sugarcane etc.), realize that solid-state fermentation material passes in and out automatically, ethanol is extracted in the cross-flow contact, constant composition alcohol vapour (30～40% is provided, v/v), to guarantee the rectifying tower steady-state operation, and realize that the residual heat integrative utilization is to reduce energy consumption and carrying capacity of environment, and then and rectifying, post-processing unit such as molecular sieve dehydration and extruded moulding coupling, realize the commercialized running of sweet broomcorn straw solid state fermentation production alcohol fuel technology, this integrated technology is suitable for the sugarcane raw material solid state fermentation equally and produces alcohol fuel.
The present invention proposes a kind of based on the poor slag-ethanol of solid-state fermentation material realization separates continuously and residual heat integrative utilizes integral method and key equipment, and it is characterized in that: described method contains following processing step:
(1) custody transfer: the fermentation material that obtains through solid state fermentation, the ethanol that contains 4～10% (v/v), for effectively preventing ethanol volatilization loss, the fermentor tank discharging is arranged in the sealed cabin to be carried out, belt is carried also to be arranged in the enclosed tunnel and is carried out simultaneously, and regularly vacuum take-off reclaims alcohol vapour;
(2) go into tower and cloth: solid-state fermentation material is through hopper, star distributor and enter airtight annular groove rotating-disk stripping tower continuously, evenly trickle down on rotating-disk, and by the horizontal circle revolution (0.2 ~ 2.0rpm) of disk, make solid-state material on disk, form the bed of material of 10～120cm, bed of material surface is smooth by the claw realization of being fixed on the sidewall, and the solid-state bed of material also carries out horizontal circumferential motion under rotating-disk promotes;
(3) ethanol stripping: from 2～5kg/cm of boiler
2Superheated vapour is uniformly distributed along the circumference through the annular tube type steam distributor from the stripping tower bottom and enters, and pass rotating-disk straight up and the bed of material that ferments, the two is the cross-flow contact, make the ethanol in the fermentation material put forward the dense vapour phase that changes over to step by step, obtain the alcohol vapour of the constant composition of 30～40% (v/v), and capture the district through alcohol vapour and be sent to follow-up rectification cell, guarantee its steady-state operation; A small amount of raffinate (steam condensate) leakage fluid dram at the bottom of tower is sent to treatment unit for waste water;
(4) poor slag goes out tower: after the fermentation material rotates a nearly week along with rotating-disk is slow, the big portion of ethanol wherein changes vapour phase over to, poor slag near discharge port scraper swash plate, pusher reel and discharge port (burying) by the bed of material and enter poor slag holding tank, after the further vacuum take-off of poor slag is reclaimed alcohol vapour, poor slag outlet flows to the belt handling equipment from the lower end, is sent to poor slag deep processing unit;
(5) UTILIZATION OF VESIDUAL HEAT IN: at rectification working process, cat head obtains the ethanol while of 95.5% (v/v), discharges a large amount of raffinates at the tower still inevitably.Still raffinate temperature higher (in 80～100 ℃ of scopes), the UTILIZATION OF VESIDUAL HEAT IN potentiality are very big, still raffinate temperature higher (at 80～100 ℃), realize that by following two approach waste heat utilizes again: the one, raffinate is transmitted back to airtight annular groove rotating-disk stripping tower urceolus chuck indirect heating material and the pre-hot fermentation material of enclosed tunnel external jacket, the 2nd, by electrically heated generation steam to replenish the solid state distillation steam consumption.
In above-mentioned method, the custody transfer of described step 1 is for effectively reducing in the fermentation material ethanol volatilization loss to improve actual ethanol yield, the solid-state fermenter discharging is arranged in the sealed cabin to be carried out, and fermentation material belt in enclosed tunnel is carried, and is equipped with ethanol suction unit and recycling pipeline simultaneously.
In above-mentioned side's method, described step 2 go into tower and cloth is at airtight annular groove rotating-disk stripping tower, fermentation material is evenly gone into tower continuously, and by the horizontal circumferential motion and the claw effect of rotating-disk, making the fermentation material go into tower continuously, equably and forms the even bed of material of 40～100cm thickness.
In above-mentioned method, the ethanol stripping of described step 3 is the horizontal circle revolution that are accompanied by the fermentation bed of material, superheated vapour from bottom to top is cross-flow and passes the bed of material, dense by carrying step by step, realization ethanol separates, obtain the alcohol vapour of the constant composition of 30～40% (v/v), guarantee follow-up rectifying tower steady-state operation, satisfy the large-scale commercial applicationsization requirement of operation continuously.
In aforesaid method, the poor slag discharging of described step 4 be poor slag behind the ethanol stripping under discharging swash plate and the acting in conjunction of pusher reel, after further vacuum take-off reclaims alcohol vapour, realize continuous self-emptying.
In above-mentioned method, the UTILIZATION OF VESIDUAL HEAT IN of described step 5 is at rectifying bottom product calorific value height, characteristics that flow is big, realize that by following two approach waste heat utilizes again: the one, raffinate is transmitted back to airtight annular groove rotating-disk stripping tower urceolus chuck indirect heating material and the pre-hot fermentation material of enclosed tunnel external jacket, the 2nd, by electrically heated generation steam to replenish the solid state distillation steam consumption.
The present invention proposes a kind of based on the integral system that the poor slag-ethanol of solid-state fermentation material realization separates continuously and residual heat integrative utilizes, and it is characterized in that:
Described airtight annular groove rotating-disk stripping tower mainly consists of the following components: feeding assembly, rotation inner core, static urceolus, rotating-disk, vapour line and assembly, sealing conical top cover, rotating shaft and drive disk assembly, discharging assembly, alcohol vapour reclaim assembly.
Described discharging sealed cabin (1) one end links to each other with inclined-plane rotary drum solid-state fermenter discharge end, and to the sealing of fermentor tank implement export, the other end links to each other with fermentation material outlet (2); Belt conveyor (3) places enclosed tunnel (4), and enclosed tunnel (4) one ends are implemented sealing to fermentation material outlet (2), and the other end links to each other with airtight annular groove rotating-disk stripping tower opening for feed (5); Star distributor (6) one ends link to each other with opening for feed (5), and the other end links to each other with charging interface on the stripping tower top cover;
Described alcohol vapour collecting chamber (7) is positioned at the stripping tower internal upper part, is surrounded jointly by conical top cover, inner core (8), urceolus (9) and the bed of material (10) surface, and its top awl mouth links to each other with rectifying tower (25) opening for feed;
Described urceolus and liquid seal trough (9) maintain static, and conical top cover links to each other by liquid seal trough with urceolus, and inner core (8) lower end links to each other with rotating-disk, and the bed of material (10) is positioned on the rotating-disk; Control unit (17) regulation and control variable-frequency motor (16) driving gears (14) drive rotating shaft (11) and then promote inner core (8), rotating-disk and the bed of material (10) and carry out horizontal circumferential motion; Superheated vapour from boiler enters stripping tower through steam distributor (12); Poor slag enters poor slag holding tank (20) through discharging swash plate and pusher reel (22) by discharge baffle (23) effect, in holding tank (20), further reclaim alcohol vapour after poor slag discharge port (19) flows into belt conveyor, and be sent to feed deep processing operation automatically; A small amount of phlegma is sent to the wastewater treatment operation through leakage fluid dram (13); Whole stripping tower is positioned on the bearing (15);
The alcohol vapour that described continuous solid-state distillation obtains is fed into rectifying tower as vapour phase, step by step after vaporization and the condensation, obtain the ethanol of 95.5% (v/v) at cat head, simultaneously discharge a large amount of 80～100 ℃ still raffinates at the tower still, realize that by following two approach waste heat utilizes again: the one, raffinate is transmitted back to airtight annular groove rotating-disk stripping tower urceolus chuck indirect heating material and the pre-hot fermentation material of enclosed tunnel external jacket, the 2nd, by electrically heated generation steam to replenish the solid state distillation steam consumption.
The present invention has the following advantages:
(1) by the continuous separating device of this novel poor slag-ethanol of airtight annular groove rotating-disk stripping tower, can realize being back to back and the mechanize processing of solid-state fermentation material, reduce labour intensity, and then satisfy the needs of modern large-scale industrial production;
(2) for effectively avoiding ethanol volatilization loss, improve actual ethanol yield, fermentation is expected jar and is arranged in the sealed cabin and carries out, and belt is carried in enclosed tunnel simultaneously, and is reclaimed ethanol by regular vacuum take-off;
(3) the solid state distillation process has realized that cross-flow from bottom to top contacts the horizontal circumferential motion of fermentation material with superheated vapour, improve the ethanol steam stripping efficiency, the alcohol vapour that obtains has metastable ethanol to be formed, and can adapt to the charging requirement of follow-up rectifying steady state operation, guarantees that the rectifying stable state runs continuously;
(4) still raffinate calorific value height, the flow of rectifying discharging are big, realize that by following two approach waste heat utilizes again: the one, raffinate is transmitted back to airtight annular groove rotating-disk stripping tower urceolus chuck indirect heating material and the pre-hot fermentation material of enclosed tunnel external jacket, the 2nd, by electrically heated generation steam to replenish the solid state distillation steam consumption.
Description of drawings
The preferably poor slag-ethanol of accompanying drawing 1 the present invention separates continuously and residual heat integrative utilizes process flow diagram.
The preferred airtight annular groove rotating-disk stripping tower structural representation of accompanying drawing 2 the present invention.
Embodiment
Below in conjunction with drawings and Examples technical scheme of the present invention is described further:
The technical solution used in the present invention is based on solid-state fermentation material and realizes that poor slag-ethanol separates integral method and the equipment that utilizes with residual heat integrative continuously, comprises following operation and equipment:
(1) custody transfer: ethanol content is in 4～10% (v/v) scope in the fermentation material that solid state fermentation obtains, for effectively preventing ethanol volatilization loss, the fermentor tank discharging is arranged in the sealed cabin to be carried out, and belt is carried also and carried out in the sealing tunnel simultaneously, and regularly vacuum take-off reclaims alcohol vapour;
(2) go into tower and cloth: solid-state fermentation material is through hopper, star distributor and enter airtight annular groove rotating-disk stripping tower continuously, evenly trickle down on rotating-disk, and by the horizontal circle revolution effect of disk, make solid-state material on disk, form the bed of material of 10～120cm, the smooth of bed of material surface realizes that by the claw that is fixed on the sidewall fermentation bed of material carries out horizontal circumferential motion under rotating-disk promotes;
(3) ethanol stripping: being uniformly distributed along the circumference through the annular tube type steam distributor from the stripping tower bottom from the superheated vapour of boiler enters, and pass straight up rotating-disk, the fermentation bed of material, the two is the cross-flow contact, make the ethanol in the fermentation material put forward the dense vapour phase that changes over to step by step, obtain the alcohol vapour of the constant composition of 30～40% (v/v), and capture the district through alcohol vapour and be sent to follow-up rectification cell, can satisfy distillation operation steady running, a small amount of raffinate (steam condensate) leakage fluid dram at the bottom of tower is sent to treatment unit for waste water;
(4) poor slag goes out tower: after the fermentation material rotates a nearly week along with rotating-disk is slow, the big portion of ethanol wherein changes vapour phase over to, poor slag near discharge port scraper swash plate, pusher reel and discharge port (burying) by the bed of material and enter poor slag holding tank, after poor slag is further reclaimed alcohol vapour, poor slag outlet flows to the belt handling equipment from the lower end, is sent to poor slag deep processing unit subsequently;
(5) UTILIZATION OF VESIDUAL HEAT IN: rectification working process is discharged a large amount of still raffinates at the tower still inevitably in the ethanol while that obtains 95.5%.Still raffinate temperature higher (in 80～100 ℃ of scopes), realize that by following two approach waste heat utilizes again: the one, raffinate is transmitted back to airtight annular groove rotating-disk stripping tower urceolus chuck indirect heating material and the pre-hot fermentation material of enclosed tunnel external jacket, the 2nd, by electrically heated generation steam to replenish the solid state distillation steam consumption.
Described custody transfer is the loss that causes for ethanol volatilization during effectively the reduction fermentation is expected, the solid-state fermenter discharging is carried out in sealed cabin, and fermentation expects that belt is carried in enclosed tunnel, is equipped with ethanol suction unit and recycling pipeline simultaneously.
Describedly go into tower and cloth is at airtight annular groove rotating-disk stripping tower,, making the fermentation material go into tower continuously, equably and form the bed of material of 40～100cm thickness by the horizontal circumferential motion and the claw effect of rotating-disk.
Described ethanol stripping is the horizontal circle revolution that is accompanied by the fermentation bed of material, superheated vapour from bottom to top is cross-flow and passes the bed of material, dense by carrying step by step, realization ethanol separates, obtain the alcohol vapour of the constant composition of 30～40% (v/v), guarantee follow-up rectifying tower steady-state operation, satisfy the large-scale commercial applicationsization requirement of operation continuously.
Described poor slag discharging be poor slag behind the ethanol stripping under discharging swash plate and the acting in conjunction of pusher reel, after further reclaiming alcohol vapour, realize self-emptying.
Described UTILIZATION OF VESIDUAL HEAT IN is at rectifying bottom product calorific value height, characteristics that flow is big, realize that by following two approach waste heat utilizes again: the one, raffinate is transmitted back to airtight annular groove rotating-disk stripping tower urceolus chuck indirect heating material and the pre-hot fermentation material of enclosed tunnel external jacket, the 2nd, by electrically heated generation steam to replenish the solid state distillation steam consumption.
Consult Fig. 1～2
Embodiment
1.1 ton contains 7% (v/v) alcoholic acid solid fermentation material and drain into belt conveyor in sealed cabin, transports in the sealing tunnel, enters airtight annular groove rotating-disk stripping tower through hopper, star distributor, the controls revolution disc rotation speed is at 0.1 ~ 2rpm, with 3.5kg/cm
2The superheated vapour separating alcohol, can obtain the alcohol vapour of 30～40% (v/v), amount to 99.5% (w/w) ethanol 60.0kg, solid state distillation process ethanol yield is 98.0%.
Claims (2)
1. one kind is separated the integral method that utilizes with residual heat integrative continuously, it is characterized in that described method comprises following processing step based on sweet sorghum and sugarcane solid-state fermentation material ethanol-poor slag:
(1) custody transfer: ethanol content is in 4～10%v/v scope in the fermentation material that comes through solid state fermentation, for preventing that effectively the ethanol volatilization from causing damage, the fermentor tank discharging is arranged in the sealed cabin to be carried out, the fermentation material is carried and is also carried out in enclosed tunnel simultaneously, and regularly reclaims alcohol vapour from enclosed tunnel;
(2) go into tower and cloth: belt is carried and the fermentation material that comes enters airtight annular groove rotating-disk stripping tower continuously through hopper, star distributor, evenly trickle down on rotating-disk, and by the horizontal circle revolution of disk, make solid-state material on disk, form the bed of material of 10～120cm, bed of material surface is smooth by the claw realization of being fixed on the sidewall, and the fermentation bed of material also carries out horizontal circumferential motion under rotating-disk promotes;
(3) ethanol stripping: being uniformly distributed along the circumference through the annular tube type steam distributor from the stripping tower bottom from the superheated vapour of boiler enters, and pass rotating-disk straight up and the bed of material that ferments, the two is the cross-flow contact, make the ethanol in the fermentation material put forward the dense vapour phase that changes over to step by step, obtain the alcohol vapour of the constant composition of 30～40%v/v, and capture the district through alcohol vapour and be sent to follow-up rectification cell, to satisfy distillation operation steady running, small amount of steam phlegma raffinate leakage fluid dram at the bottom of tower is sent to treatment unit for waste water;
(4) poor slag goes out tower: the fermentation material is along with after rotating-disk slowly rotates a nearly week with 0.1-5rpm, the big portion of contained ethanol changes vapour phase over to, near the scraper swash plate of the poor slag of residue discharge port, pusher reel and the discharge port of burying by the bed of material and enter poor slag holding tank, after the further vacuum take-off of poor slag is reclaimed alcohol vapour, poor slag outlet flows into belt conveyor from the lower end, is sent to follow-up poor slag deep processing unit subsequently;
(5) UTILIZATION OF VESIDUAL HEAT IN: at rectification working process, cat head obtains for 95.5% ethanol while, there are a large amount of raffinates to discharge at the tower still inevitably, still raffinate temperature is in 80～100 ℃ of scopes, realize UTILIZATION OF VESIDUAL HEAT IN by following two approach: the one, raffinate is transmitted back to airtight annular groove rotating-disk stripping tower urceolus chuck indirect heating material and the pre-hot fermentation material of enclosed tunnel external jacket, the 2nd, by electrically heated generation steam to replenish the solid state distillation steam consumption.
2. produce the integral system that the poor slag-ethanol of sweet sorghum alcoholic acid separates continuously and residual heat integrative utilizes based on solid state fermentation for one kind, it is characterized in that: described system comprises: discharging sealed cabin (1), and the fermentation material exports (2), belt conveyor (3), enclosed tunnel (4), opening for feed (5), star distributor (6), alcohol vapour collecting chamber (7), inner core (8), liquid seal trough and urceolus (9), the bed of material (10), rotating shaft (11), steam distributor (12), leakage fluid dram (13), gear (14), bearing (15), variable-frequency motor (16), control unit (17), poor slag belt conveyor (18), poor slag discharge port (19), holding tank (20), alcohol vapour reclaims mouthful (21), discharging swash plate and pusher reel (22), discharge baffle (23), rectifying tower (24), electric heater (25);
Described discharging sealed cabin (1) one end links to each other with inclined-plane rotary drum solid-state fermenter discharge end, and to the sealing of fermentor tank implement export, the other end links to each other with fermentation material outlet (2); Belt conveyor (3) places enclosed tunnel (4), and enclosed tunnel (4) one ends are implemented sealing to fermentation material outlet (2), and the other end links to each other with airtight annular groove rotating-disk stripping tower opening for feed (5); Star distributor (6) one ends link to each other with opening for feed (5), and the other end links to each other with charging interface on the stripping tower top cover;
Described alcohol vapour collecting chamber (7) is positioned at the stripping tower internal upper part, is surrounded jointly by conical top cover, inner core (8), urceolus (9) and the bed of material (10) surface, and its top awl mouth links to each other with rectifying tower (24) opening for feed;
Described liquid seal trough and urceolus (9) maintain static, and conical top cover links to each other by liquid seal trough with urceolus, and inner core (8) lower end links to each other with rotating-disk, and the bed of material (10) is positioned on the rotating-disk; Control unit (17) regulation and control variable-frequency motor (16) driving gears (14) drive rotating shaft (11) and then promote inner core (8), rotating-disk and the bed of material (10) and carry out horizontal circumferential motion; Superheated vapour from boiler enters stripping tower through steam distributor (12); Poor slag enters poor slag holding tank (20) through discharging swash plate and pusher reel (22) by discharge baffle (23) effect, in holding tank (20), further reclaim alcohol vapour after poor slag discharge port (19) flows into belt conveyor, and be sent to feed deep processing operation automatically; A small amount of phlegma is sent to the wastewater treatment operation through leakage fluid dram (13); Whole stripping tower is positioned on the bearing (15);
The alcohol vapour that the solid state distillation process obtains is fed into rectifying tower (24) as vapour phase, through carrying the dense ethanol that obtains 95.5%v/v at cat head step by step; Simultaneously at the tower still, raffinate realizes that by following two approach waste heat utilizes again: the one, raffinate is transmitted back to airtight annular groove rotating-disk stripping tower urceolus chuck indirect heating material and the pre-hot fermentation material of enclosed tunnel external jacket, the 2nd, by electrically heated generation steam to replenish the solid state distillation steam consumption.
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