阅读说明：本技术 一种液糖化工段多效串级闪蒸节能工艺 (A kind of thinning workshop section multiple-effect tandem flash distillation energy saving technique ) 是由 马传路 吕西军 陈伟 党钰 马鹏举 纵鑫 于 2019-08-28 设计创作，主要内容包括：本发明提供一种液糖化工段多效串级闪蒸节能工艺,其特征在于：包括粉浆罐和闪蒸塔,利用多效串级闪蒸技术,高温物料自身降温的同时,产生的二次蒸汽加热低温物料,达到节省蒸汽和节约用水的目的,其中的多个闪蒸塔通过对高温物料降温同时产生的二次蒸汽进行加热浆罐中的粉浆,实现了能源的高效利用；传统的换热器冷却是将液浆从60度降低至30度,本发明利用五级闪蒸塔将液浆降低至45度左右,极大节约了冷却水资源；通过多级闪蒸塔的预热,不在使用传统的喷射液化器直接对粉浆进行加热,解决了高温蒸汽直接和粉浆接触液化,使液化酶发生部分失活及会使部分液化醪液产生焦糖化的影响。(The present invention provides a kind of thinning workshop section multiple-effect tandem flash distillation energy saving technique, it is characterized by comprising slurry tank and flash columns, utilize multiple-effect tandem flash evaporation technology, while high-temperature material itself cools down, the Secondary-steam heating low-temperature material of generation, achieve the purpose that save steam and water conservation, multiple flash columns therein realize the efficient utilization of the energy by carrying out the secondary steam that high-temperature material cools down while generating the slurry in heating slurry tank；Traditional heat exchanger cooling is that slurry is reduced to 30 degree from 60 degree, and slurry is reduced to 45 degree or so using Pyatyi flash column by the present invention, has greatly saved cooling water resources；By the preheating of multistage flash distillation tower, directly slurry is not heated using traditional Jet liquefier, solves high-temperature steam and directly liquefy with slurry contact, the influence for making α-amylase that partial inactivation occur and partial liquefaction mash can be made to generate caramelization.)

1. a kind of thinning workshop section multiple-effect tandem flashes energy saving technique, it is characterised in that: including slurry tank and flash column, slurry tank It including level-one slurry tank and second level slurry tank and is connected in series, flash column includes primary flash tower, two-stage flash tower, three stages of flashing Tower, level Four flash column and Pyatyi flash column are simultaneously connected in series, and material is gradually increased by slurry tank steam heating temperature, and passes through Steam jet ejector is thermally formed high-temperature material, and high-temperature material passes through flash column continuous cooling, while high-temperature material itself cools down, Flash column generate Secondary-steam heating slurry tank in low-temperature material, wherein technique specific steps include:

Step 1: slurry enters in level-one slurry tank steam and heats, and is heated to 58-63 degree addition α-amylases, and α-amylase is by starch Small molecule is resolved into, slurry viscosity is reduced；

Step 2: for slurry through delivery pump into second level slurry tank, second level slurry tank heats powder by steam in level-one slurry tank Slurry is warming up to 80-85 degree, increases the digestion effect and gelatinization time of α-amylase；

Step 3: second level slurry tank conveying slurry is brought rapidly up to 100-105 degree and is sent into liquefied pot by steam jet ejector, Deepen gelatinization liquefaction effect and miscellaneous bacteria of going out；

Step 4: the slurry in liquefied pot is continuous by primary flash tower, two-stage flash tower, three stages of flashing tower, level Four flash column Storage tank is spent and be sent into the control of slurry temperature 58-63 by flash distillation cooling, adds carbohydrase in storage tank；

Step 5: the slurry in storage tank is cooled to 43-47 degree by Pyatyi flash column, then carries out heat exchanger and be cooled to 30 degree or so It ferments.

2. a kind of thinning workshop section multiple-effect tandem according to claim 1 flashes energy saving technique, it is characterised in that: described three The secondary steam that grade flash column, level Four flash column and Pyatyi flash column generate while cooling to slurry is defeated by heat pump It send and heats slurry into level-one slurry tank.

3. a kind of thinning workshop section multiple-effect tandem according to claim 2 flashes energy saving technique, it is characterised in that: described one The secondary steam that grade flash column and two-stage flash tower generate while cooling to slurry is delivered to second patent flour by heat pump Slurry is heated in slurry tank.

4. a kind of thinning workshop section multiple-effect tandem according to claim 3 flashes energy saving technique, it is characterised in that: described one Grade flash column, two-stage flash tower, three stages of flashing tower, level Four flash column and Pyatyi flash column convey material by high potential difference.

5. a kind of thinning workshop section multiple-effect tandem according to claim 4 flashes energy saving technique, it is characterised in that: the steaming Vapour injector connects main steam range with heat pump, and main steam range provides high-temperature steam, heat pump for steam jet ejector and heat pump When steam is not enough to the slurry in slurry tank being heated to suitable temperature in flash column, heat pump provides volume by main steam range Slurry in outer steam heating slurry tank, makes slurry reach suitable temperature.

Technical field

The present invention relates to alcohol technical field, specially a kind of thinning workshop section multiple-effect tandem flashes energy saving technique.

Background technique

Currently, material slurry steam is directly heated to 102 DEG C from 25 DEG C, the use of carbohydrase in alcohol production process Condition is 60 DEG C, with cooling water temperature, turns sequence after the liquefaction of completion material, the conversion being saccharified and further converts i.e. biofermentation, raw The temperature of object fermentation is at 32 DEG C, and for material from low-temperature heat to high temperature, high temperature is water-cooled required process conditions again, and steam follows The consumption of ring cooling water inflow is big, serious waste of resources.

Summary of the invention

Technical problem solved by the invention is to provide a kind of thinning workshop section multiple-effect tandem flash distillation energy conserving system, with solution Certainly the problems mentioned above in the background art.

Technical problem solved by the invention is realized using following technical scheme: a kind of thinning workshop section multiple-effect tandem sudden strain of a muscle Energy saving technique is steamed, including slurry tank and flash column, slurry tank include level-one slurry tank and second level slurry tank and be connected in series, flashed Tower includes primary flash tower, two-stage flash tower, three stages of flashing tower, level Four flash column and Pyatyi flash column and is connected in series, material It is gradually increased by slurry tank steam heating temperature, and is thermally formed high-temperature material by steam jet ejector, high-temperature material passes through Flash column continuous cooling, low temperature while high-temperature material itself cools down, in the Secondary-steam heating slurry tank of flash column generation Material, wherein technique specific steps include:

Step 1: slurry enters steam in level-one slurry tank and heats, and is heated to 58-63 degree addition α-amylases, α-amylase will Starch resolves into small molecule, reduces slurry viscosity；

Step 2: through delivery pump into second level slurry tank, second level slurry tank is added slurry by steam in level-one slurry tank Hot slurry is warming up to 80-85 degree, increases the digestion effect and gelatinization time of α-amylase；

Step 3: second level slurry tank conveying slurry is brought rapidly up to 100-105 degree by steam jet ejector and is sent into liquefaction In tank, deepen gelatinization liquefaction effect and miscellaneous bacteria of going out；

Step 4: the slurry in liquefied pot passes through primary flash tower, two-stage flash tower, three stages of flashing tower, level Four flash column Storage tank is spent and be sent into the control of slurry temperature 58-63 by successive flash vaporization cooling, adds carbohydrase in storage tank；

Step 5: the slurry in storage tank is cooled to 43-47 degree by Pyatyi flash column, then carries out heat exchanger and be cooled to 30 degree It ferments left and right.

Preferably, generation while the three stages of flashing tower, level Four flash column and Pyatyi flash column cool down to slurry Secondary steam be delivered in level-one slurry tank by heat pump and heat slurry.

Preferably, the secondary steam generated while the primary flash tower and two-stage flash tower cool down to slurry is logical It crosses heat pump and is delivered in second level slurry tank and heat slurry.

Preferably, the primary flash tower, two-stage flash tower, three stages of flashing tower, level Four flash column and Pyatyi flash column are logical Cross high potential difference conveying material.

Preferably, the steam jet ejector connects main steam range with heat pump, and main steam range is steam jet ejector and heating Pump provides high-temperature steam and adds when heat pump steam in flash column is not enough to the slurry in slurry tank being heated to suitable temperature Heat pump provides the slurry in extra steam heating slurry tank by main steam range, and slurry is made to reach suitable temperature.

Compared with prior art, the beneficial effects of the present invention are: using multiple-effect tandem flash evaporation technology, high-temperature material itself drop While warm, the Secondary-steam heating low-temperature material of generation achievees the purpose that save steam and water conservation, multiple sudden strains of a muscle therein Tower is steamed by carrying out the slurry in heating slurry tank to the secondary steam that high-temperature material cools down while generating, and realizes the efficient of the energy It utilizes；Traditional heat exchanger cooling is that slurry is reduced to 30 degree from 60 degree, and the present invention is reduced slurry using Pyatyi flash column To 45 degree or so, cooling water resources have been greatly saved；By the preheating of multistage flash distillation tower, traditional Jet liquefier is not being used Directly slurry is heated, high-temperature steam is solved and directly liquefies with slurry contact, make α-amylase that partial inactivation and meeting occur Partial liquefaction mash is set to generate the influence of caramelization.

Detailed description of the invention

Fig. 1 is the principle of the present invention structural schematic diagram.

Specific embodiment

In order to make implement technical means of the invention, creation characteristic, reach purpose and effect is easy to understand, tie below Conjunction is specifically illustrating, and the present invention is further explained.

As shown in Figure 1,

In the present embodiment, a kind of thinning workshop section multiple-effect tandem flash distillation energy saving technique, including slurry tank and flash column, slurry Tank includes level-one slurry tank and second level slurry tank and is connected in series, and flash column includes primary flash tower, two-stage flash tower, three-level sudden strain of a muscle It steams tower, level Four flash column and Pyatyi flash column and is connected in series, material is gradually increased by slurry tank steam heating temperature, and passes through It crosses steam jet ejector and is thermally formed high-temperature material, high-temperature material passes through flash column continuous cooling, and high-temperature material itself cools down same When, flash column generate Secondary-steam heating slurry tank in low-temperature material, wherein technique specific steps include:

Step 1: slurry enters steam in level-one slurry tank and heats, and is heated to 58-63 degree addition α-amylases, α-amylase will Starch resolves into small molecule, reduces slurry viscosity；

Step 2: through delivery pump into second level slurry tank, second level slurry tank is added slurry by steam in level-one slurry tank Hot slurry is warming up to 80-85 degree, increases the digestion effect and gelatinization time of α-amylase；

Step 3: second level slurry tank conveying slurry is brought rapidly up to 100-105 degree by steam jet ejector and is sent into liquefaction In tank, deepen gelatinization liquefaction effect and miscellaneous bacteria of going out；

Step 4: the slurry in liquefied pot passes through primary flash tower, two-stage flash tower, three stages of flashing tower, level Four flash column Storage tank is spent and be sent into the control of slurry temperature 58-63 by successive flash vaporization cooling, adds carbohydrase in storage tank；

Step 5: the slurry in storage tank is cooled to 43-47 degree by Pyatyi flash column, then carries out heat exchanger and be cooled to 30 degree It ferments left and right.

In the present embodiment, while the three stages of flashing tower, level Four flash column and Pyatyi flash column cool down to slurry The secondary steam of generation is delivered in level-one slurry tank by heat pump and heats slurry.

In the present embodiment, secondary steaming that the primary flash tower and two-stage flash tower generate while cooling to slurry Vapour is delivered in second level slurry tank by heat pump and heats slurry.

In the present embodiment, the primary flash tower, two-stage flash tower, three stages of flashing tower, level Four flash column and Pyatyi flash distillation Tower conveys material by high potential difference.

In the present embodiment, the steam jet ejector connects main steam range with heat pump, main steam range be steam jet ejector and Heat pump provides high-temperature steam, and heat pump steam in flash column is not enough to the slurry in slurry tank being heated to suitable temperature When, heat pump provides the slurry in extra steam heating slurry tank by main steam range, and slurry is made to reach suitable temperature.

The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes Change and improvement all fall within the protetion scope of the claimed invention.Claimed range of the invention by appended claims and Its equivalent thereof.