Low-energy-consumption maltol production method and application

Abstract

The invention discloses a low-energy-consumption maltol production method and application, and belongs to the technical field of maltol production.The production method is characterized in that a cyclone dust collector is additionally arranged on the basis of an original bag-type dust collector, and the cyclone dust collector is connected with the bag-type dust collector through an air inducing pipeline. A traditional drying mode is broken through, waste steam in the previous drying process is subjected to hot air recovery, it can be guaranteed that the normal drying process is completed, energy consumption is reduced, the production efficiency is further improved, the production cost is saved, residual dust is effectively recovered, the influence of environmental odor is reduced, and the environment-friendly benefit is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of maltol production, and in particular relates to a production method and application of maltol with low energy consumption. Background Art

[0002] Maltol has a special aroma of caramelized butterscotch and is a good flavor enhancer and low-intensity sweetener for food and beverages. As the application areas of maltol continue to expand, the amount used is also increasing. How to improve the current production process, reduce production costs, and provide more competitive products is a technical problem that needs to be solved urgently.

[0003] In the production of maltol, the material drying has always adopted a vibrating fluidized bed. A certain amount of air enters the bed after being filtered and heated, and the air inlet temperature can be precisely controlled. Usually, the wet finished material is evenly sucked into the distributor by a vortex air pump, and evenly added to the fluidized bed to fully contact with the air. After the continuous heating of the steam, the product is basically in a loose state, which ensures the flow rate quality of the entire drying process and finally meets the drying requirements of the product. The exhaust gas with fine powder that has been in contact with the material, relying on the principle of equipment volume expansion, makes the fine powder reach an ideal sedimentation rate in the drying bed, thereby minimizing the fine powder content of the exhaust air. The exhaust gas is then dedusted by a bag filter and then washed by a water washing tower and discharged. The excess steam of this drying process is taken away by the induced draft fan, which increases the steam cost, has poor operating stability, and increases the production load of subsequent auxiliary equipment such as washing in the water washing tower. The environmental odor cannot be controlled, which is not worth the loss and does not match the current production requirements of energy saving and consumption reduction. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a method for producing maltol with low energy consumption. By improving the drying process, the surplus hot air can be recycled, successfully reducing the production cost and reducing the production load of subsequent auxiliary equipment. While saving steam costs, the product conversion rate is greatly improved, the subsequent dust generation is reduced, and the environmental protection benefits are increased.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] On the one hand, the present invention provides a method for producing maltol with low energy consumption and application.

[0007] The production method comprises the following steps: adding a cyclone dust collector to an existing bag dust collector, wherein the cyclone dust collector is connected to the bag dust collector via an air induced duct.

[0008] The present invention enables effective material recovery by adding a cyclone dust collector, reduces material loss, and greatly improves product conversion rate.

[0009] Furthermore, the height-to-diameter ratio of the cyclone dust collector is 6-10; preferably 7-9; further preferably 8-8.8; and most preferably 8.4.

[0010] Furthermore, the diameter of the exhaust port of the cyclone dust collector is 0.5-1.5 of the diameter of the cyclone dust collector barrel; preferably 0.8-1.2; more preferably 0.9-1; most preferably 1.

[0011] In some embodiments, the production method further includes adding a buffer tank on the basis of the original induced draft fan, wherein the buffer tank is connected to the induced draft fan, the air volume is controlled by a regulating valve, and the hot air from the bag dust collector is introduced into the buffer tank through the induced draft fan.

[0012] Furthermore, the air volume is 50-80% of the hot air flow of the bag filter; preferably 60-75%; further preferably 65-70%.

[0013] The hot air flow rate of the bag dust collector in the present invention is the amount of hot air flowing through the bag dust collector within 1 hour.

[0014] Furthermore, the hot air in the buffer tank is returned to the fluidized bed through a blower for hot air recycling.

[0015] The present invention can recycle surplus hot air through optimization and improvement, and the overall steam usage is reduced to a large extent.

[0016] In some embodiments, the production method specifically comprises the following steps:

[0017] (1) The hot air from the drying workshop enters the cyclone dust collector, the dust is discharged through the discharge port, and the hot air enters the bag dust collector;

[0018] (2) A portion of the hot air from the bag filter enters the water washing tower through the induced draft fan for washing and then is discharged, and the remaining portion is introduced into the buffer tank through the induced draft fan and returned to the drying workshop through the blower for hot air reuse.

[0019] On the other hand, the present invention provides the application of the above production method in the energy-saving production of maltol.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] (1) The present invention breaks through the traditional drying mode and recovers the steam wasted in the previous drying process as hot air, which can not only ensure the normal completion of the drying process, but also save energy consumption, further improve production efficiency, save production costs, effectively recover residual dust, reduce the impact of environmental odor, and have environmental benefits.

[0022] (2) The present invention can recycle surplus hot air, significantly reducing overall steam usage, with steam per ton of product reduced by 30-40%.

[0023] (3) The production load of the water washing tower of the present invention is reduced, the service life of the equipment is extended, the operational stability is greatly improved, the comprehensive yield of the work section is effectively improved, and certain economic benefits are achieved.

[0024] (4) Compared with the prior art, the present invention adds relevant auxiliary equipment, and the steam energy consumption and dust recovery are greatly improved. The environmental odor is greatly improved compared with before, the washing effect of the water washing tower is guaranteed, and the energy saving and emission reduction effect is significant.

[0025] (5) The present invention achieves the purpose of controllable steam, controllable dust, and controllable environmental odor by adding auxiliary equipment. The process improvement cost is low, and it provides technical support for energy conservation and emission reduction of similar drying processes. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is the improved process flow chart of the present invention,

[0027] Among them, 1 is a cyclone dust collector, 2 is a bag dust collector, 3 is an induced draft fan, 4 is a water washing tower, and 5 is a buffer tank. DETAILED DESCRIPTION

[0028] The following describes the embodiments of the present invention in conjunction with specific examples. Before further describing the specific embodiments of the present invention, it should be understood that the scope of protection of the present invention is not limited to the specific embodiments described below; it should also be understood that the terms used in the embodiments of the present invention are for describing specific embodiments rather than for limiting the scope of protection of the present invention.

[0029] Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0030] The present invention provides a method for producing maltol with low energy consumption, such as Figure 1 As shown, the improvement over the prior art is that the drying process is improved, specifically, a cyclone dust collector 1 is added in front of the air inlet of the bag filter 2, and a buffer tank 5 is added behind the induced draft fan 3.

[0031] The specific implementation method is:

[0032] (1) The hot air from the drying workshop enters the cyclone dust collector 1, the dust is discharged through the discharge port, and the hot air enters the bag dust collector 2;

[0033] (2) A portion of the hot air from the bag filter enters the water washing tower 4 through the induced draft fan 3 for washing and then is discharged, and the remaining portion is introduced into the buffer tank 5 through the induced draft fan 3 and returned to the drying workshop through the blower for hot air reuse.

[0034] The present invention breaks through the traditional drying mode and recovers the steam wasted in the previous drying process through hot air, which can not only ensure the normal completion of the drying process, but also save energy consumption, further improve production efficiency, save production costs, effectively recover residual dust, reduce the impact of environmental odor, and have environmental benefits.

[0035] In order to further understand the technical solution of the present invention, the technical solution and effects of the present invention are described in detail in combination with specific embodiments. The existing maltol production process of the present invention adopts a fluidized bed drying method in the drying workshop, and the hot air volume is 8000m 3 / h, dust content is 0.088%, induced air duct The specifications of the bag dust collector are: 120cm×2000cm.

[0036] Example 1 A method for producing maltol with low energy consumption

[0037] The production method comprises the following steps:

[0038] (1) The hot air from the drying workshop enters the cyclone dust collector 1, the dust is discharged through the discharge port, and the hot air enters the bag dust collector 2, wherein the height-to-diameter ratio of the cyclone dust collector is 8.4, specifically: Exhaust port

[0039] (2) The hot air from the bag filter is regulated by a regulating valve, and 68% of the hot air is introduced into a buffer tank 5 (2000mm×2000mm) through an induced draft fan 3, and then returned to the drying workshop through a blower for hot air reuse. The remaining hot air enters a water washing tower 4 through an induced draft fan 3 for washing and then is discharged, and the dust is discharged through the discharge port.

[0040] Example 2 A method for producing maltol with low energy consumption

[0041] The production method comprises the following steps:

[0042] (1) The hot air from the drying workshop enters the cyclone dust collector 1, the dust is discharged through the discharge port, and the hot air enters the bag dust collector 2, wherein the height-to-diameter ratio of the cyclone dust collector is 7, specifically: Exhaust port

[0043] (2) The hot air from the bag filter is regulated by a regulating valve, and 60% of the hot air is introduced into a buffer tank 5 (2000mm×2000mm) through an induced draft fan 3, and then returned to the drying workshop through a blower for hot air reuse. The remaining hot air enters a water washing tower 4 through an induced draft fan 3 for washing and then is discharged, and the dust is discharged through the discharge port.

[0044] Example 3 A method for producing maltol with low energy consumption

[0045] The production method comprises the following steps:

[0046] (1) The hot air from the drying workshop enters the cyclone dust collector 1, the dust is discharged through the discharge port, and the hot air enters the bag dust collector 2, wherein the height-to-diameter ratio of the cyclone dust collector is 9, specifically: Exhaust port

[0047] (2) The hot air from the bag filter is regulated by a regulating valve, and 75% of the hot air is introduced into a buffer tank 5 (2000mm×2000mm) through an induced draft fan 3, and then returned to the drying workshop through a blower for hot air reuse. The remaining hot air enters a water washing tower 4 through an induced draft fan 3 for washing and then is discharged, and the dust is discharged through the discharge port.

[0048] Comparative Example 1

[0049] The production method comprises the following steps:

[0050] (1) The hot air from the drying workshop enters the cyclone dust collector 1, the dust is discharged through the discharge port, and the hot air enters the bag dust collector 2, wherein the height-to-diameter ratio of the cyclone dust collector is 4, specifically: Exhaust port

[0051] (2) The hot air from the bag filter is regulated by a regulating valve, and 50% of the hot air is introduced into a buffer tank 5 (2000mm×2000mm) through an induced draft fan 3, and then returned to the drying workshop through a blower for hot air reuse. The remaining hot air enters a water washing tower 4 through an induced draft fan 3 for washing and then is discharged, and the dust is discharged through the discharge port.

[0052] Comparative Example 2

[0053] The production method comprises the following steps:

[0054] (1) The hot air from the drying workshop enters the cyclone dust collector 1, the dust is discharged through the discharge port, and the hot air enters the bag dust collector 2, wherein the height-to-diameter ratio of the cyclone dust collector is 11, specifically: , Exhaust port .

[0055] (2) The hot air from the bag filter is regulated by a regulating valve, and 90% of the hot air is introduced into a buffer tank 5 (2000mm×2000mm) through an induced draft fan 3, and then returned to the drying workshop through a blower for hot air reuse. The remaining hot air enters a water washing tower 4 through an induced draft fan 3 for washing and then is discharged, and the dust is discharged through the discharge port.

[0056] Table 1

[0057] Group Steam reduction rate per ton of product % Dust recovery rate increase% Example 1 36％ 15％ Example 2 30％ 10％ Example 3 40％ 19％ Comparative Example 1 25％ 6％ Comparative Example 2 21％ 4％

[0058] Note:

[0059] 1. The calculation method of the steam reduction rate per ton of product in Table 1 is: (actual steam consumption per ton of product - steam consumption per ton of product before improvement) * 100 / steam consumption per ton of product before improvement;

[0060] 2. The calculation method of the dust recovery rate in Table 1 is: (actual dust recovery per ton of product - dust recovery per ton of product before improvement) * 100 / dust recovery per ton of product before improvement.

[0061] The above is a further description of the present invention in conjunction with specific embodiments, but these embodiments are merely exemplary and do not constitute any limitation on the scope of the present invention. It should be understood by those skilled in the art that the details and forms of the technical solution of the present invention may be modified or replaced without departing from the spirit and scope of the present invention, but these modifications and replacements all fall within the scope of protection of the present invention.

Claims

1. A method for producing maltol with low energy consumption, characterized in that: A cyclone dust collector is added on the basis of the original bag dust collector, and the cyclone dust collector is connected to the bag dust collector through an induced air duct.

2. The production method according to claim 1, characterized in that The air outlet of the cyclone dust collector is connected to the air inlet of the bag dust collector.

3. The production method according to claim 1, characterized in that The height-to-diameter ratio of the cyclone dust collector is 6-10, and the diameter of the exhaust port of the cyclone dust collector is 0.5-1.5 of the diameter of the cyclone dust collector cylinder.

4. The production method according to claim 1, characterized in that The height-to-diameter ratio of the cyclone dust collector is 7-9, and the diameter of the exhaust port of the cyclone dust collector is 0.8-1.2 of the diameter of the cyclone dust collector cylinder.

5. The production method according to claim 1, characterized in that: The height-to-diameter ratio of the cyclone dust collector is 8-8.8, and the diameter of the exhaust port of the cyclone dust collector is 0.9-1 of the diameter of the cyclone dust collector cylinder.

6. The production method according to claim 1, characterized in that: The height-to-diameter ratio of the cyclone dust collector is 8.4, and the diameter of the exhaust port of the cyclone dust collector is 1 of the diameter of the cyclone dust collector cylinder.

7. The production method according to claim 1, characterized in that: It also includes adding a buffer tank on the basis of the original induced draft fan, wherein the buffer tank is connected to the induced draft fan, the air volume is controlled by a regulating valve, and the hot air from the bag dust collector is introduced into the buffer tank through the induced draft fan.

8. The production method according to claim 7, characterized in that: The air volume is 50-80% of the hot air flow of the bag filter; preferably 60-75%; further preferably 65-70%.

9. The production method according to any one of claims 1 to 7, characterized in that: The steps include: (1) The hot air from the drying workshop enters the cyclone dust collector, the dust is discharged through the discharge port, and the hot air enters the bag dust collector; (2) A portion of the hot air from the bag filter enters the water washing tower through the induced draft fan for washing and then is discharged, and the remaining portion is introduced into the buffer tank through the induced draft fan and returned to the drying workshop through the blower for hot air reuse.

10. Application of the production method according to any one of claims 1 to 9 in energy-saving production of maltol.

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