CN101451019A - Cooling method of coking reaction in caramel pigment production - Google Patents
Cooling method of coking reaction in caramel pigment production Download PDFInfo
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- CN101451019A CN101451019A CNA2007101712592A CN200710171259A CN101451019A CN 101451019 A CN101451019 A CN 101451019A CN A2007101712592 A CNA2007101712592 A CN A2007101712592A CN 200710171259 A CN200710171259 A CN 200710171259A CN 101451019 A CN101451019 A CN 101451019A
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Abstract
The invention discloses a cooling method for pyrogenetic reaction in production of caramel pigment. The method comprise: a dosing water tank is built so as to be communicated with the input end and the output end of a cooling pipe coil of a reaction tower respectively; the cooling pipe coil is arranged on the outer wall of the reaction tower; a temperature-control transducer is adopted to detect the temperature of the reaction tower and control the output of cooling water of the dosing water tank; and the cooling water of the dosing water tank is circularly transported to the cooling pipe coil in order that the cooling pipe coil input with the cooling water carries out cooling and decalescence on the reaction tower. The cooling method adopts dosing water of the dosing water tank used in the previous step of caramel pigment production as cooling water for cooling the reaction tower and carries out circular cooling through the reclaiming of the cooling water after decalescence; as no cooling tower needs to be used, the method basically avoids consumption of water and electrical energy, reduces the length of a pipeline, substantially reduces operating cost, avoids scale formation of the pipeline, ensures the efficiency of heat exchange and puts an end to noise pollution.
Description
Technical field
The present invention relates to the caramel colorant production technique, more particularly, relate to the method for cooling of pyrogenic reaction in a kind of caramel colorant production, this method of cooling not only can reduce running cost, can also guarantee heat exchange efficiency.
Background technology
The utilization scope of caramel colorant is very extensive, and coffee, cola, chocolate and soy sauce etc. edible in people's daily life all have the interpolation caramel colorant.Usually, the production craft step of caramel colorant is as follows: adopt glucose to add water by batching with water tank with a small amount of food grade soda acid (as vitriol, sulphite etc.) earlier and prepare burden, heat in the mixture input reaction tower after will preparing burden then, generally be heated to 150 ℃, make material that pyrogenic reaction take place in reaction tower, import again and carry out flash distillation cooling in the flashing apparatus, and then by evaporation concentration and cool, carry out at last that quality product is regulated and to finish finished product canned.Because material can produce a large amount of heats in the pyrogenic reaction process, remain in 100 ± 3 ℃ the scope in order to make temperature of reaction, must in time cool off reaction tower.Please in conjunction with shown in Figure 1, at present, the refrigerating unit 10 of pyrogenic reaction commonly used is drawn together spiral coil cooling tube 11, cooling tower 12, water pump 13 and temperature control transmitter 14, spiral coil cooling tube 11 is located at (spiral coil cooling tube 12 is shown on the outer wall of being located at reaction tower 1 among Fig. 1) on reaction tower 1 inside or the outer wall, the output of spiral coil cooling tube 11, input terminus are connected to cooling tower 12 by pipeline 15 respectively, form a circulation loop; Also be provided with water pump 13 and valve 16 on the pipeline 15 between the input terminus of spiral coil cooling tube 11 and the cooling tower 12; Also be provided with temperature control transmitter 14 on cooling tower 12 outer walls, be used for the detection reaction temperature, simultaneously the switch of by-pass valve control 16.Please in conjunction with shown in Figure 2, the concrete steps of the method for cooling of this pyrogenic reaction are: set up a cooling tower 12 earlier, cooling tower 12 is communicated with input, the output terminal of the spiral coil cooling tube 11 of reaction tower 1 respectively; Adopt the temperature of 14 pairs of reaction towers 1 of temperature control transmitter to detect then, and the output of the water coolant of controlled chilling tower 12; Be delivered in the spiral coil cooling tube 11 by the water coolant of water pump 13 again cooling tower 12; Make 11 pairs of reaction towers 1 of spiral coil cooling tube of input water coolant cool off heat absorption, and the water coolant after will absorbing heat is carried back cooling tower 12; Adopt the water coolant after 12 pairs of heat absorptions of cooling tower to cool off at last, thereby provide water coolant for the circulation cooling of reaction tower 1.The concrete steps of the water coolant of controlled chilling tower 12 output are: when the temperature that detects reaction tower 1 when temperature control transmitter 14 exceeds design temperature scope (100 ± 3 ℃), by-pass valve control 16 is opened, and input in the spiral coil cooling tube 11 by the water coolant of water pump 13 with cooling tower 12, reaction tower 1 is cooled off heat absorption; When the temperature that detects reaction tower 1 when temperature control transmitter 14 returned to the design temperature scope, by-pass valve control 16 was closed, thereby stops the conveying of water coolant.But, owing to adopt cooling tower 12 and water pump 13 to carry out the conveying of water coolant and reclaim cooling again, need expend a large amount of power and water energy, and this reaction tower 1 is located at outdoorly, it is longer to connect the used pipeline 15 of coil pipe, causes running cost very high; Because cooling tower 12 runnings cause water coolant to concentrate, fouling in pipeline 15 easily, thus cause heat exchange efficiency to reduce, cause cooling performance not good, and increased maintenance cost and maintenance work intensity; In addition, the noise that cooling tower 12 runnings produce is very big, has had a strong impact on Working environment.
Summary of the invention
At the above-mentioned running cost height that exists in the prior art, easily cause that pipeline scale causes that cooling performance is poor, maintenance cost height and the big shortcoming of noise, the method of cooling that the purpose of this invention is to provide pyrogenic reaction in a kind of caramel colorant production, this method of cooling not only can reduce running cost, and can also avoid pipeline scale, avoid producing noise.
For achieving the above object, the present invention adopts following technical scheme:
The concrete steps of the method for cooling of pyrogenic reaction were as follows during this caramel colorant was produced:
A. set up a batching and use water tank, batching is communicated with input, the output terminal of the spiral coil cooling tube of reaction tower respectively with water tank;
B. adopt the temperature control transmitter that the temperature of reaction tower is detected, and the control batching is exported with the water coolant of water tank;
C. will prepare burden and be delivered in the spiral coil cooling tube with the cooling water circulation of water tank;
D. the spiral coil cooling tube by the input water coolant cools off heat absorption to reaction tower.
The concrete steps of described step C are as follows:
C1. will prepare burden with the water coolant in the water tank by pipe-line transportation to spiral coil cooling tube;
C2. defeated the being back to batching of the water coolant after the output terminal by spiral coil cooling tube will absorb heat is with in the water tank;
C3. the temperature difference that produces in preparing burden with water tank by the water coolant after the heat absorption makes the low water coolant of temperature transport to automatically in the spiral coil cooling tube by output tube, realizes that the circulation of water coolant is carried.
The concrete steps of described B are as follows:
B1. on preparing burden, a valve is set with the pipeline between the input terminus of water tank and spiral coil cooling tube;
B2. adopt the temperature control transmitter that the temperature of reaction tower is detected, and
When the temperature that detects exceeds the design temperature scope, open by temperature control transmitter by-pass valve control, batching is transported in the spiral coil cooling tube with the water coolant of water tank;
When the temperature that detects returns to the design temperature scope, to close by temperature control transmitter by-pass valve control, the water coolant that stops to prepare burden with water tank is transported in the spiral coil cooling tube.
In technique scheme, the method for cooling of pyrogenic reaction is used water tank for setting up a batching in the caramel colorant production of the present invention, batching is communicated with input, the output terminal of the spiral coil cooling tube of reaction tower respectively with water tank, and spiral coil cooling tube is located at the reaction tower outer wall; Adopt the temperature control transmitter that the temperature of reaction tower is detected, and the control batching is exported with the water coolant of water tank; Batching is delivered in the spiral coil cooling tube with the cooling water circulation of water tank; Spiral coil cooling tube by the input water coolant cools off heat absorption to reaction tower.This method of cooling adopt caramel colorant produce in the preorder step, employed batching uses the interior batching water of water tank as water coolant, be used for the cooling of reaction tower, and by reclaiming the cooling that circulates of water coolant after the heat absorption, owing to need not to use cooling tower, and need not water pump power is provided, produce the circulation that power is finished water coolant by cooling range, avoided the consumption of power and water energy substantially, and reduced duct length, significantly reduced running cost, also avoid pipeline scale, guaranteed heat exchange efficiency, stopped noise pollution, not only increase economic benefit, but also improved Working environment.
Description of drawings
Fig. 1 is the structural representation of refrigerating unit of the pyrogenic reaction of prior art;
Fig. 2 is the schema of the method for cooling of pyrogenic reaction during the caramel colorant of prior art is produced;
Fig. 3 is the schema of the method for cooling of pyrogenic reaction during caramel colorant of the present invention is produced;
Fig. 4 is the structural representation according to the applied refrigerating unit of method of cooling of pyrogenic reaction of the present invention.
Embodiment
Further specify technical scheme of the present invention below in conjunction with drawings and Examples.
See also shown in Figure 3ly, the concrete steps of the method for cooling of pyrogenic reaction are in the caramel colorant production of the present invention: set up a batching earlier with water tank 22, batching is communicated with input, the output terminal of the spiral coil cooling tube 21 of reaction tower 1 respectively with water tank 22; Adopt the temperature of 24 pairs of reaction towers 1 of temperature control transmitter to detect then, be used to control batching and carry with the water coolant of water tank 22; To prepare burden again and be delivered in the spiral coil cooling tube 21 with the cooling water circulation of water tank 22; 21 pairs of reaction towers 1 of spiral coil cooling tube by the input water coolant cool off heat absorption at last.Please in conjunction with shown in Figure 4, Fig. 4 is the structural representation of the applied refrigerating unit 20 of method of cooling according to the present invention, this refrigerating unit 20 comprises spiral coil cooling tube 21, batching water tank 22 and temperature control transmitter 24, need to prove at this, described batching is the water storage of the water equipment that provides for preparing burden in the caramel colorant production process, mixing with water tank 22, normal-temperature water is equipped with in inside, is commonly referred to as water coolant so be used herein to cooling; Spiral coil cooling tube 21 dishes are located on the inside or outer wall of reaction tower 1, spiral coil cooling tube 21 input terminuss are communicated with the lower side of batching with water tank 22 by pipeline 25, the output terminal of spiral coil cooling tube 21 be communicated with the upper end of water tank 22 with batching by pipeline 25, spiral coil cooling tube 21 input terminuss and batching are with also being provided with valve 26 on the pipeline between the water tank 22 25, because batching can be same indoor carrying out with pyrogenic reaction, therefore batching can shorten the distance that pipeline 25 connects greatly with the close together between water tank 22 and the reaction tower 1; Temperature control transmitter 24 is located at the outer wall of reaction tower 1, reaction tower 1 is carried out temperature detection, the dotted line of the band arrow shown in Fig. 4 is expressed as the switch of 24 pairs of valves 26 of temperature control transmitter and controls, thereby the control batching is 100 ± 3 ℃ (being the temperature range that the pyrogenic reaction requirement keeps) with the output of the water coolant of water tank 22, the design temperature of temperature control transmitter 24.Below in conjunction with Fig. 1, Fig. 2 the step of this method of cooling is illustrated: when mixture behind reaction tower 1 internal heating to 150 ℃, carry out pyrogenic reaction and heat release, the temperature that temperature control this moment transmitter 24 detects reaction tower 1 has been increased to 160 ℃, surpass design temperature, by-pass valve control 26 is opened immediately, batching is with the input terminus of the water coolants in the water tank 22 by pipeline 25 input spiral coil cooling tubes 21, and along spiral coil cooling tube 21 from going up rotational flow down, reaction tower 1 is cooled off, absorbs heat; Water coolant after the heat absorption flows back into batching with in the water tank 22 by the output terminal and the pipeline 25 of spiral coil cooling tube 21.Because the temperature of the water coolant after the heat absorption is higher than the water coolant of preparing burden with in the water tank 22, produced certain temperature difference thus, the water coolant that temperature is high flows with the top of water tank 22 toward batching, the water coolant that temperature is low then flows into the bottom of batching with water tank 22, thereby the low water coolant of temperature is entered in the spiral coil cooling tube 21 by pipeline 25, cooling circulates, therefore both need not to adopt water pump 13 that power is provided, need not cooling tower 12 again and carry out cooling effect, can make the temperature of the water coolant of output always be lower than the temperature of reaction tower 1.When temperature control transmitter 24 detected reaction tower 1 cooled temperature and is 101 ℃, by-pass valve control 26 was closed immediately, thereby stopped to prepare burden with the output of the water coolants in the water tank 22.
Compare with the method for cooling of pyrogenic reaction in the caramel colorant production of prior art, method of cooling of the present invention adopts prepares burden with the batching water in the water tank 22 as water coolant, need not to adopt cooling tower 12 even water pump 13, need not external impetus, be enough to finish the circulation of water coolant by the power of the generation of the cooling range in the process of cooling, substantially avoided the consumption of power and water energy, saved running cost greatly, shorten the connection of pipeline 25 and set up distance, also reduced manufacturing cost, and avoided preventing fouling in pipeline 25 because cooling tower 12 runnings cause water coolant to concentrate, guaranteed the heat exchange efficiency of water coolant; In addition, the operation cooling tower can produce bigger noise in the prior art, and there is not any noise in our rule, has improved Working environment.
Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, and be not to be used as limitation of the invention, as long as in connotation scope of the present invention, all will drop in claims scope of the present invention variation, the modification of the above embodiment.
Claims (3)
1. the method for cooling of pyrogenic reaction is characterized in that during a caramel colorant was produced,
The concrete steps of this method of cooling are as follows:
A. set up a batching and use water tank, batching is communicated with input, the output terminal of the spiral coil cooling tube of reaction tower respectively with water tank;
B. adopt the temperature control transmitter that the temperature of reaction tower is detected, and the control batching is exported with the water coolant of water tank;
C. will prepare burden and be delivered in the spiral coil cooling tube with the cooling water circulation of water tank;
D. the spiral coil cooling tube by the input water coolant cools off heat absorption to reaction tower.
2. the method for cooling of pyrogenic reaction is characterized in that during caramel colorant as claimed in claim 1 was produced,
The concrete steps of described step C are as follows:
C1. will prepare burden with the water coolant in the water tank by pipe-line transportation to spiral coil cooling tube;
C2. defeated the being back to batching of the water coolant after the output terminal by spiral coil cooling tube will absorb heat is with in the water tank;
C3. the temperature difference that produces in preparing burden with water tank by the water coolant after the heat absorption makes the low water coolant of temperature transport to automatically in the spiral coil cooling tube by output tube, realizes that the circulation of water coolant is carried.
3. the method for cooling of pyrogenic reaction is characterized in that during caramel colorant as claimed in claim 1 was produced,
The concrete steps of described B are as follows:
B1. on preparing burden, a valve is set with the pipeline between the input terminus of water tank and spiral coil cooling tube;
B2. adopt the temperature control transmitter that the temperature of reaction tower is detected, and
When the temperature that detects exceeds the design temperature scope, open by temperature control transmitter by-pass valve control, batching is transported in the spiral coil cooling tube with the water coolant of water tank;
When the temperature that detects returns to the design temperature scope, to close by temperature control transmitter by-pass valve control, the water coolant that stops to prepare burden with water tank is transported in the spiral coil cooling tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101712592A CN101451019A (en) | 2007-11-29 | 2007-11-29 | Cooling method of coking reaction in caramel pigment production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101712592A CN101451019A (en) | 2007-11-29 | 2007-11-29 | Cooling method of coking reaction in caramel pigment production |
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| CN101451019A true CN101451019A (en) | 2009-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2007101712592A Pending CN101451019A (en) | 2007-11-29 | 2007-11-29 | Cooling method of coking reaction in caramel pigment production |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103923484A (en) * | 2014-05-06 | 2014-07-16 | 万福生科(湖南)农业开发股份有限公司 | Method for producing caramel color by using rice |
| CN104861736A (en) * | 2015-04-30 | 2015-08-26 | 陕西科技大学 | Preparation method of caramel pigment without 4-methylimidazole |
-
2007
- 2007-11-29 CN CNA2007101712592A patent/CN101451019A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103923484A (en) * | 2014-05-06 | 2014-07-16 | 万福生科(湖南)农业开发股份有限公司 | Method for producing caramel color by using rice |
| CN104861736A (en) * | 2015-04-30 | 2015-08-26 | 陕西科技大学 | Preparation method of caramel pigment without 4-methylimidazole |
| CN104861736B (en) * | 2015-04-30 | 2017-01-11 | 陕西科技大学 | Preparation method of caramel pigment without 4-methylimidazole |
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Application publication date: 20090610 |