CN104984557A - Five-effect eight-body crystallization and evaporation process - Google Patents
Five-effect eight-body crystallization and evaporation process Download PDFInfo
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- CN104984557A CN104984557A CN201510448228.1A CN201510448228A CN104984557A CN 104984557 A CN104984557 A CN 104984557A CN 201510448228 A CN201510448228 A CN 201510448228A CN 104984557 A CN104984557 A CN 104984557A
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Abstract
The invention discloses a five-effect eight-body crystallization and evaporation process. The five-effect eight-body crystallization and evaporation process is characterized by comprising the following steps of: charging, pre-heating, carrying out primary heating evaporation, carrying out secondary heating evaporation, carrying out tertiary heating evaporation, carrying out quaternary heating evaporation, carrying out five-level heating evaporation and crystallizing, recycling waste steam and cleaning equipment. The five-effect eight-body crystallization and evaporation process has the beneficial effects that: the materials are free of a blockage phenomenon in the whole process; a refrigerant medium is not liable to have scale formation; the effective operation time is long; the power consumption is less; a water source utilization rate is high; the operation cost is low; and the crystal grains are uniform and full.
Description
Technical field
The present invention relates to a kind of crystallization and evaporation process, is a kind of five effect eight body crystallization and evaporation process specifically.
Background technology
Gluconic acid sodium salt is also known as sodium pentahydyoxycaproate, and be a kind of white or light yellow crystalline powder, soluble in water, be slightly soluble in alcohol, be insoluble to ether, its molecular formula is C
6h
11o
7na, relative molecular mass is 218. 14.Gluconic acid sodium salt is the deep processed product of glucose, is also the basic material preparing glucolactone, gluconate (zinc, copper, ferrous salt) etc., can be used as nutritional supplement, curing agent, buffer etc. in food industry.This product Heat stability is good, without hygroscopy, the chelating ability excellent due to it and be widely used in water treatment, plating, metal and the multiple industrial department such as nonmetallic surface clean and manufacture of cement, has purposes widely in industries such as chemical industry, food, medicine, light industrys.
Ammonium nitrate is colourless oblique side or monoclinic crystal, is decomposed into water and nitrous oxide at 210 ° of C; Nitrogen is decomposed at 300 ° of more than C, oxygen and water during violent heating; Water-soluble, methyl alcohol and ethanol, can absorb a large amount of heat energy and reduce temperature time water-soluble; Main as fertilizer and industrial and military explosive, and can be used for pesticide, refrigerant, nitrogen oxide absorbent, manufacture laughing gas, pyrotechnics etc.
Sodium gluconate solution or the traditional double-deck orifice plate distributing device of the many employings of crystallization and evaporation process of ammonium nitrate solution, easily because the phenomenon of the excessive or too small formation of liquid load " dry spot " of thermic load is caused in its distributing device hole of feed blocking, be unfavorable for the precipitation of crystal; And the evaporation concentration equipment evaporation rate that traditional crystallization and evaporation process adopts is low, power consumption is large, residence time of material is long, in addition double-hole plate structure distributing device easily blocks, cause ton evaporation capacity steam consumption high, the consequence of generation is that operating cost is high, heat transfer efficiency is low, effective run time is short, product crystal particle is little.
Summary of the invention
The five effect eight body crystallization and evaporation process that technical problem to be solved by this invention is to provide that a kind of coolant media is less scaling, operating cost is low, evaporation efficiency is high, for the crystallization and evaporation of gluconic acid sodium salt or ammonium nitrate solution.
For achieving the above object, the technical solution used in the present invention is: a kind of five effect eight body crystallization and evaporation process, comprise the following steps:
(1) pan feeding: the material liquid of finite concentration, uniform temperature is injected head tank with certain flow, be provided with the instruction of feed surge liquid level at the top of head tank and regulate warning device, when the material liquid liquid level in head tank reaches alert locations, pan feeding completes;
(2) preheating: after pan feeding completes, material liquid is by being arranged on product pump bottom head tank and material liquid pipeline enters condensate water preheater I, after condensate water preheater I is preheated to 61 DEG C, enters condensate water preheater II, is preheated to 71 DEG C, finally enter an effect preheater and carry out preheating;
(3) one-level heating evaporation: enter an effect heating clamber after material liquid preheating completes, heating evaporation is carried out as thermal source using the live steam that steam pipe system produces, after material liquid and live steam carry out heat exchange, material liquid from top to bottom flows along heat exchanger tube inwall film-like, material liquid is heated to its boiling point, and evaporate in heat exchanger tube, solvent is constantly vaporized, concentration of raw material is further enhanced, gained liquid-vapor mixture enters an effect separation chamber and is separated, isolated indirect steam enters next effect as heat source, secondary raw material liquid enters into next effect heating clamber by punishment in advance valve,
(4) secondary heating evaporation: indirect steam enters two effect heating clambers by jet chimney, secondary raw material liquid is imitated in heating clamber by the product pump and material liquid Cemented filling to two being arranged on an effect heating clamber lower left, carry out imitating with one and identically in heating clamber be obtained by reacting liquid-vapor mixture, gained liquid-vapor mixture enters two effect separation chambers and is separated, isolated three steam enter next effect as heat source, and three times material liquid enters into next effect heating clamber by punishment in advance valve;
(5) three grades of heating evaporations: three times steam enters triple effect heating clamber by jet chimney, three material liquids are by being arranged on the product pump of two effect heating clamber lower lefts and material liquid Cemented filling to triple effect heating clamber, carry out imitating with two and identically in heating clamber be obtained by reacting liquid-vapor mixture, gained liquid-vapor mixture enters triple effect separation chamber and is separated, isolated four steam enter next effect as heat source, and four times material liquid enters into next effect heating clamber by punishment in advance valve;
(6) level Four heating evaporation: four times steam enters quadruple effect heating clamber by jet chimney, four material liquids by be arranged on triple effect heating clamber lower left product pump and material liquid Cemented filling to quadruple effect heating clamber, carry out identical with in triple effect heating clamber being obtained by reacting liquid-vapor mixture, gained liquid-vapor mixture enters quadruple effect separation chamber and is separated, isolated five steam enter next effect as heat source, and five times material liquid enters into next effect heating clamber by punishment in advance valve;
(7) Pyatyi heating evaporation, crystallization: five times steam enters five effect heating clambers by jet chimney, five material liquids by be arranged on quadruple effect heating clamber lower left product pump and material liquid Cemented filling to five effect heating clamber, carry out identical with in quadruple effect heating clamber being obtained by reacting liquid-vapor mixture, gained liquid-vapor mixture is delivered to five effect crystallization chamber and carries out crystallization reaction, after concentration reaches technic index by mass flowmenter detect qualified after enter into finished pot, concentration does not reach technic index and enters into head tank and carry out concentration and evaporation again;
(8) drying, packaging, storage: pack by specification after the qualified products obtained in step (7) being carried out drying, then preserve, 12 months storage periods;
(9) fixed gas reclaims: in step (3) ~ (7), the fixed gas of gained enters condensation in condenser, and obtain condensate water and enter in condensation water pot, described condensation water pot is connected with condensate water preheater I, can make secondary utilize condensate water;
(10) equipment cleaning: after above-mentioned technique completes, utilizes scavenging pump group to be delivered to respectively by CIP cleaning fluid in an effect heating clamber, two effect heating clambers, triple effect heating clamber, quadruple effect heating clamber and five effect heating clambers, cleans rear discharge to it.
As preferred technical scheme, in described step (3), when material liquid is sodium gluconate solution, its initial temperature is 45 DEG C, and initial concentration is 25%, and flow is 44.56t/h; When material liquid is ammonium nitrate solution, its initial temperature is 30 DEG C, and initial concentration is 10%, and flow is 50t/h.
As preferred technical scheme, when material liquid is sodium gluconate solution, in described step (3), the temperature of live steam is 120 DEG C, and the vacuum of an effect heating clamber remains on 0MPa, and the temperature of indirect steam is 97 DEG C, and the concentration of secondary raw material liquid is 32%; In described step (4), the vacuum of two effect heating clambers remains on-0.038MPa, and the temperature of three steam is 87 DEG C, and the concentration of three material liquids is 48%; In described step (5), the vacuum of triple effect heating clamber remains on-0.062MPa, and the temperature of three steam is 75 DEG C, and the concentration of three material liquids is 60%; In described step (6), the vacuum of quadruple effect heating clamber remains on-0.082MPa, and the temperature of four steam is 58 DEG C, and the concentration of four material liquids is 76.5%; In described step (7), the vacuum of five effect heating clambers remains on-0.089MPa, and the vacuum of five effect crystallisation chamber remains on-0.092MPa, and temperature remains on 63 DEG C.
As preferred technical scheme, when material liquid is ammonium nitrate solution, in described step (3), the temperature of live steam is 120 DEG C, and the vacuum of an effect heating clamber remains on 0MPa, and the temperature of indirect steam is 104.5 DEG C, and the concentration of secondary raw material liquid is 20%; In described step (4), the vacuum of two effect heating clambers remains on-0.013MPa, and the temperature of three steam is 94 DEG C, and the concentration of three material liquids is 30%; In described step (5), the vacuum of triple effect heating clamber remains on-0.049MPa, and the temperature of three steam is 82 DEG C, and the concentration of three material liquids is 40%; In described step (6), the vacuum of quadruple effect heating clamber remains on-0.073MPa, and the temperature of four steam is 67 DEG C, and the concentration of four material liquids is 50%; In described step (7), the vacuum of five effect heating clambers remains on-0.089MPa, and the vacuum of five effect crystallisation chamber remains on-0.094MPa, and temperature remains on 54 DEG C.
As preferred technical scheme, in the process of described step (3) ~ (7) heating evaporation, by the vacuum valve be arranged on each effect heating clamber to regulate its vacuum held stationary.
As preferred technical scheme, the lower right of described condenser is provided with vavuum pump, and described vavuum pump is connected with each vacuum valve.
Owing to have employed technique scheme, the present invention has following beneficial effect:
1, the present invention adopts the evaporation and crystallization mode of five effect eight bodies, and five effect employings is forced circulation structure evaporated form, is conducive to the precipitation of crystal, ensures the even of crystal grain;
2, the injection distributing device of the present invention's employing, efficiently avoid the clogging of material, is conducive to extending effective run time, reduces power consumption, save operating cost;
3, present invention employs industrial computer mode, can monitor and record whole parameter, effectively ensure that the even running of equipment, be conducive to carrying out smoothly of technological process;
4, the present invention carries out low liquid level operation, reduces condensate water COD content;
5, the present invention realizes low-temperature operation, greatly improves the quality of products, and reduces the consumption of the energy, improves the utilization rate of the energy;
6, the present invention adopts the mode that vavuum pump combines with vacuum valve, carrys out the stability of the vacuum in Controlling Technology flow process;
7, the present invention's mode of adopting condensate water circulatory to utilize, ton consumption of steam is less than or equal to 0.15 ton of steam/ton water, decreases the waste of water resource;
8, the present invention adopts automatic washing mode, effectively can ensure the cleannes of main equipment, be easy to install and maintain;
In sum, the omnidistance material of the present invention is without clogging, and coolant media is less scaling, and effective run time is long, and power consumption is few, and water utilization rate is high, and operating cost is low and crystal grain is even, full.
Detailed description of the invention
Now by reference to the accompanying drawings and specific embodiment, the present invention will be further described.
Fig. 1 is present invention process flow chart.
In figure: 1, head tank, 2, the instruction of feed surge liquid level regulates warning device, 3, product pump, 4, material liquid pipeline, 5, condensate water preheater I, 6, condensate water preheater II, 7, one effect preheater, 8, one effect heating clamber, 9, steam pipe system, 10, one effect separation chamber, 11, two effect heating clambers, 12, two effect separation chambers, 13, triple effect heating clamber, 14, triple effect separation chamber, 15, quadruple effect heating clamber, 16, quadruple effect separation chamber, 17, five effect heating clambers, 18, five effect crystallisation chamber, 19, condenser, 20, condensation water pot, 21, scavenging pump group, 22, vacuum valve, 23, vavuum pump.
As shown in Figure 1, embodiments of the invention are: a kind of five effect eight body crystallization and evaporation process, comprise the following steps:
(1) pan feeding: the material liquid of finite concentration, uniform temperature is injected head tank 1 with certain flow, the instruction of feed surge liquid level is installed at the top of head tank 1 and regulates warning device 2, when the material liquid liquid level in head tank 1 reaches alert locations, pan feeding completes;
(2) preheating: after pan feeding completes, material liquid is by being arranged on product pump 3 bottom head tank and material liquid pipeline 4 enters condensate water preheater I 5, condensate water preheater II 6 is entered after condensate water preheater I is preheated to 61 DEG C, be preheated to 71 DEG C, finally enter an effect preheater 7 and carry out preheating;
(3) one-level heating evaporation: enter an effect heating clamber 8 after material liquid preheating completes, heating evaporation is carried out as thermal source using the live steam that steam pipe system 9 produces, after material liquid and live steam carry out heat exchange, material liquid from top to bottom flows along heat exchanger tube inwall film-like, material liquid is heated to its boiling point, and evaporate in heat exchanger tube, solvent is constantly vaporized, concentration of raw material is further enhanced, gained liquid-vapor mixture enters an effect separation chamber 10 and is separated, isolated indirect steam enters next effect as heat source, secondary raw material liquid enters into next effect heating clamber by punishment in advance valve,
(4) secondary heating evaporation: indirect steam enters two effect heating clambers 11 by jet chimney, secondary raw material liquid is delivered to two effect heating clambers 11 by the product pump 3 and material liquid pipeline 4 being arranged on effect heating clamber 8 lower left, carry out imitating with one and identically in heating clamber 8 be obtained by reacting liquid-vapor mixture, gained liquid-vapor mixture enters two effect separation chambers 12 and is separated, isolated three steam enter next effect as heat source, and three times material liquid enters into next effect heating clamber by punishment in advance valve;
(5) three grades of heating evaporations: three times steam enters triple effect heating clamber 13 by jet chimney, three times material liquid is delivered to triple effect heating clamber 13 by the product pump 3 and material liquid pipeline 4 being arranged on two effect heating clamber 11 lower lefts, carry out imitating with two and identically in heating clamber 10 be obtained by reacting liquid-vapor mixture, gained liquid-vapor mixture enters triple effect separation chamber 14 and is separated, isolated four steam enter next effect as heat source, and four times material liquid enters into next effect heating clamber by punishment in advance valve;
(6) level Four heating evaporation: four times steam enters quadruple effect heating clamber 15 by jet chimney, four material liquids by be arranged on triple effect heating clamber 13 lower left product pump 3 and material liquid pipeline 4 be delivered to quadruple effect heating clamber 15, carry out identical with in triple effect heating clamber 13 being obtained by reacting liquid-vapor mixture, gained liquid-vapor mixture enters quadruple effect separation chamber 16 and is separated, isolated five steam enter next effect as heat source, and five times material liquid enters into next effect heating clamber by punishment in advance valve;
(7) Pyatyi heating evaporation, crystallization: five times steam enters five effect heating clambers 17 by jet chimney, five material liquids by be arranged on quadruple effect heating clamber 14 lower left product pump 3 and material liquid pipeline 4 be delivered to five effect heating clambers 17, carry out identical with in quadruple effect heating clamber 15 being obtained by reacting liquid-vapor mixture, gained liquid-vapor mixture is delivered in five effect crystallisation chamber 18 and carries out crystallization reaction, after concentration reaches technic index by mass flowmenter detect qualified after enter into finished pot 19, concentration does not reach technic index and enters into head tank 1 and carry out concentration and evaporation again,
(8) drying, packaging, storage: pack by specification after the qualified products obtained in step (7) being carried out drying, then preserve, 12 months storage periods;
(9) fixed gas reclaims: in step (3) ~ (7), the fixed gas of gained enters condensation in condenser 20, and obtain condensate water and enter in condensation water pot 21, described condensation water pot is connected with condensate water preheater I 5, can make secondary utilize condensate water;
(10) equipment cleaning: after above-mentioned technique completes, utilizes scavenging pump group CIP cleaning fluid to be delivered to respectively an effect heating clamber 8, two and imitates in heating clamber 11, triple effect heating clamber 13, quadruple effect heating clamber 15 and five effect heating clambers 17, clean rear discharge to it.
In described step (3), when material liquid is sodium gluconate solution, its initial temperature is 45 DEG C, and initial concentration is 25%, and flow is 44.56t/h; When material liquid is ammonium nitrate solution, its initial temperature is 30 DEG C, and initial concentration is 10 ~ 15%, and flow is 50t/h.
When material liquid is sodium gluconate solution, in described step (3), the temperature of live steam is 120 DEG C, and the vacuum of an effect heating clamber 8 remains on 0MPa, and the temperature of indirect steam is 97 DEG C, and the concentration of secondary raw material liquid is 32%; In described step (4), the vacuum of two effect heating clambers 11 remains on-0.038MPa, and the temperature of three steam is 87 DEG C, and the concentration of three material liquids is 48%; In described step (5), the vacuum of triple effect heating clamber 13 remains on-0.062MPa, and the temperature of four steam is 75 DEG C, and the concentration of four material liquids is 60%; In described step (6), the vacuum of quadruple effect heating clamber 15 remains on-0.082MPa, and the temperature of five steam is 58 DEG C, and the concentration of five material liquids is 76.5%; In described step (7), the vacuum of five effect heating clambers 17 remains on-0.089MPa, and temperature remains on 68 DEG C, and the vacuum of five effect crystallisation chamber 18 remains on-0.092MPa, and drop temperature remains on 63 DEG C.
When material liquid is ammonium nitrate solution, in described step (3), the temperature of live steam is 120 DEG C, and the vacuum of an effect heating clamber 8 remains on 0MPa, and the temperature of indirect steam is 104.5 DEG C, and the concentration of secondary raw material liquid is 20%; In described step (4), the vacuum of two effect heating clambers 11 remains on-0.013MPa, and the temperature of three steam is 94 DEG C, and the concentration of three material liquids is 30%; In described step (5), the vacuum of triple effect heating clamber 13 remains on-0.049MPa, and the temperature of four steam is 82 DEG C, and the concentration of four material liquids is 40%; In described step (6), the vacuum of quadruple effect heating clamber 15 remains on-0.073MPa, and the temperature of five steam is 67 DEG C, and the concentration of five material liquids is 50%; In described step (7), the vacuum of five effect heating clambers 17 remains on-0.089MPa, and temperature remains on 72 DEG C, and the vacuum of five effect crystallisation chamber 18 remains on-0.094MPa, and drop temperature remains on 54 DEG C.
In the process of described step (3) ~ (7) heating evaporation, by the vacuum valve be arranged on each effect heating clamber to regulate its vacuum held stationary.
The lower right of described condenser is provided with vavuum pump, and described vavuum pump is connected with each vacuum valve.
When material liquid is sodium gluconate solution, its technological parameter is as following table:
| Evaporation capacity (kg/h) | 30000 | One effect heating clamber temperature (DEG C) | 97 |
| Inlet amount (kg/h) | 44563 | One effect heating clamber pressure vacuum (MPa) | 0 |
| Feeding temperature (DEG C) | 45 | Two effects heating clamber temperature (DEG C) | 87 |
| Input concentration (%) | 25 | Two effects heating clamber pressure vacuum (MPa) | -0.038 |
| Load (kg/h) | 14563 | Triple effect heating clamber temperature (DEG C) | 75 |
| Drop temperature (DEG C) | 63 | Triple effect heating clamber pressure vacuum (MPa) | -0.062 |
| Installed capacity (kw/h) | 255 | Quadruple effect heating clamber temperature (DEG C) | 58 |
| Air consumption (kg/h) | 7200 | Quadruple effect heating clamber pressure vacuum (MPa) | -0.082 |
| Cooling water amount (m 3/h） | 500 | Five effects heating clamber temperature (DEG C) | 68 |
| Live steam temperature (DEG C) | 120 | Five effects heating clamber pressure vacuum (MPa) | -0.089 |
When material liquid is ammonium nitrate solution, its technological parameter is as following table:
More than show and describe general principle of the present invention, principal character and advantage of the present invention.The technical staff of the industry should understand, and without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (6)
1. five effect eight body crystallization and evaporation process, is characterized in that, comprise the following steps:
(1) pan feeding: the material liquid of finite concentration, uniform temperature is injected head tank with certain flow, be provided with the instruction of feed surge liquid level at the top of head tank and regulate warning device, when the material liquid liquid level in head tank reaches alert locations, pan feeding completes;
(2) preheating: after pan feeding completes, material liquid is by being arranged on product pump bottom head tank and material liquid pipeline enters condensate water preheater I, after condensate water preheater I is preheated to 61 DEG C, enters condensate water preheater II, is preheated to 71 DEG C, finally enter an effect preheater and carry out preheating;
(3) one-level heating evaporation: enter an effect heating clamber after material liquid preheating completes, heating evaporation is carried out as thermal source using the live steam that steam pipe system produces, after material liquid and live steam carry out heat exchange, material liquid from top to bottom flows along heat exchanger tube inwall film-like, material liquid is heated to its boiling point, and evaporate in heat exchanger tube, solvent is constantly vaporized, concentration of raw material is further enhanced, gained liquid-vapor mixture enters an effect separation chamber and is separated, isolated indirect steam enters next effect as heat source, secondary raw material liquid enters into next effect heating clamber by punishment in advance valve,
(4) secondary heating evaporation: indirect steam enters two effect heating clambers by jet chimney, secondary raw material liquid is by being arranged on product pump and material liquid Cemented filling to the two effect heating clamber of an effect heating clamber lower left, carry out imitating with one and identically in heating clamber be obtained by reacting liquid-vapor mixture, gained liquid-vapor mixture enters two effect separation chambers and is separated, isolated three steam enter next effect as heat source, and three times material liquid enters into next effect heating clamber by punishment in advance valve;
(5) three grades of heating evaporations: three times steam enters triple effect heating clamber by jet chimney, three material liquids are by being arranged on the product pump of two effect heating clamber lower lefts and material liquid Cemented filling to triple effect heating clamber, carry out imitating with two and identically in heating clamber be obtained by reacting liquid-vapor mixture, gained liquid-vapor mixture enters triple effect separation chamber and is separated, isolated four steam enter next effect as heat source, and four times material liquid enters into next effect heating clamber by punishment in advance valve;
(6) level Four heating evaporation: four times steam enters quadruple effect heating clamber by jet chimney, four material liquids by be arranged on triple effect heating clamber lower left product pump and material liquid Cemented filling to quadruple effect heating clamber, carry out identical with in triple effect heating clamber being obtained by reacting liquid-vapor mixture, gained liquid-vapor mixture enters quadruple effect separation chamber and is separated, isolated five steam enter next effect as heat source, and five times material liquid enters into next effect heating clamber by punishment in advance valve;
(7) Pyatyi heating evaporation, crystallization: five times steam enters five effect heating clambers by jet chimney, five material liquids by be arranged on quadruple effect heating clamber lower left product pump and material liquid Cemented filling to five effect heating clamber, carry out identical with in quadruple effect heating clamber being obtained by reacting liquid-vapor mixture, gained liquid-vapor mixture is delivered to five effect crystallization chamber and carries out crystallization reaction, after concentration reaches technic index by mass flowmenter detect qualified after enter into finished pot, concentration does not reach technic index and enters into head tank and carry out concentration and evaporation again;
(8) drying, packaging, storage: pack by specification after the qualified products obtained in step (7) being carried out drying, then preserve, 12 months storage periods;
(9) fixed gas reclaims: in step (3) ~ (7), the fixed gas of gained enters condensation in condenser, and obtain condensate water and enter in condensation water pot, described condensation water pot is connected with condensate water preheater I, can make secondary utilize condensate water;
(10) equipment cleaning: after above-mentioned technique completes, utilizes scavenging pump group to be delivered to respectively by CIP cleaning fluid in an effect heating clamber, two effect heating clambers, triple effect heating clamber, quadruple effect heating clamber and five effect heating clambers, cleans rear discharge to it.
2. a kind of five effect eight body crystallization and evaporation process according to claim 1, it is characterized in that, in described step (3), when material liquid is sodium gluconate solution, its initial temperature is 45 DEG C, and initial concentration is 25%, and flow is 44.56t/h; When material liquid is ammonium nitrate solution, its initial temperature is 30 DEG C, and initial concentration is 10%, and flow is 50t/h.
3. a kind of five effect eight body crystallization and evaporation process according to claim 1, it is characterized in that, when material liquid is sodium gluconate solution, in described step (3), the temperature of live steam is 120 DEG C, the vacuum of one effect heating clamber remains on 0MPa, the temperature of indirect steam is 97 DEG C, and the concentration of secondary raw material liquid is 32%;
In described step (4), the vacuum of two effect heating clambers remains on-0.038MPa, and the temperature of three steam is 87 DEG C, and the concentration of three material liquids is 48%; In described step (5), the vacuum of triple effect heating clamber remains on-0.062MPa, and the temperature of three steam is 75 DEG C, and the concentration of three material liquids is 60%; In described step (6), the vacuum of quadruple effect heating clamber remains on-0.082MPa, and the temperature of four steam is 58 DEG C, and the concentration of four material liquids is 76.5%; In described step (7), the vacuum of five effect heating clambers remains on-0.089MPa, and the vacuum of five effect crystallisation chamber remains on-0.092MPa, and temperature remains on 63 DEG C.
4. a kind of five effect eight body crystallization and evaporation process according to claim 1, it is characterized in that, when material liquid is ammonium nitrate solution, in described step (3), the temperature of live steam is 120 DEG C, the vacuum of one effect heating clamber remains on 0MPa, the temperature of indirect steam is 104.5 DEG C, and the concentration of secondary raw material liquid is 20%; In described step (4), the vacuum of two effect heating clambers remains on-0.013MPa, and the temperature of three steam is 94 DEG C, and the concentration of three material liquids is 30%; In described step (5), the vacuum of triple effect heating clamber remains on-0.049MPa, and the temperature of three steam is 82 DEG C, and the concentration of three material liquids is 40%; In described step (6), the vacuum of quadruple effect heating clamber remains on-0.073MPa, and the temperature of four steam is 67 DEG C, and the concentration of four material liquids is 50%; In described step (7), the vacuum of five effect heating clambers remains on-0.089MPa, and the vacuum of five effect crystallisation chamber remains on-0.094MPa, and temperature remains on 54 DEG C.
5. a kind of five effect eight body crystallization and evaporation process according to claim 1, is characterized in that, in the process of described step (3) ~ (7) heating evaporation, by the vacuum valve be arranged on each effect heating clamber to regulate its vacuum held stationary.
6. the one five according to claim 1 and 7 imitates eight body crystallization and evaporation process, it is characterized in that, the lower right of described condenser is provided with vavuum pump, and described vavuum pump is connected with each vacuum valve.
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| CN105152250A (en) * | 2015-10-22 | 2015-12-16 | 哈尔滨工大金涛科技股份有限公司 | Multi-effect industrial wastewater evaporating and concentrating device and method |
| CN106247307A (en) * | 2016-08-31 | 2016-12-21 | 淄博华周制药设备有限公司 | Remove the pure steam generator of on-condensible gas continuously |
| CN107854857A (en) * | 2017-12-24 | 2018-03-30 | 无锡诚尔鑫环保装备科技有限公司 | A kind of multi-way concentration purifying plant and its application method |
| CN109824196A (en) * | 2019-03-13 | 2019-05-31 | 苏州希图环保科技有限公司 | A kind of low COD Wastewater zero-discharge treatment system with high salt |
| CN110396045A (en) * | 2018-10-08 | 2019-11-01 | 德清原素高科生物技术有限公司 | A kind of five effect condensation crystallization methods of sodium gluconate training liquid |
| CN112569630A (en) * | 2020-12-09 | 2021-03-30 | 常熟华虞环境科技有限公司 | Calcium chloride solution concentration and crystallization system |
| CN115228126A (en) * | 2022-07-19 | 2022-10-25 | 湖南余雄科技有限公司 | Continuous high-temperature crystallization process for sulfate |
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Application publication date: 20151021 |