How to solve the problem of used spray dryerRead: 15478 Release time: 2018/9/11 17:00:36
|Provider||Liangshan County German Bank second-hand equipment purchase and sale||Data size||47.9KB|
|Profile picture||View||download times||496 times|
|Data type||JPG picture||Views||15478 times|
|free download||click to download|
How to solve the problem of used spray dryer
Spray boring equipment can be divided into centrifugal, pressure and airflow according to the structure of the atomizer. Dry food can be sprayed as a solution, slurry or paste, but it must be pumpable. The food material needs to be atomized first and then heat exchanged in the dry room. Because the droplets formed by the spray are very small, this provides a considerable heat exchange area and enables the transpiration process to be performed quickly.
Used spray dryer, used rake dryer
In the food industry, spray boring equipment is an opposite existence. It can not only keep food with an outstanding appearance and original nutritional value, so as to produce coffee mate, egg yolk powder, milk powder, soup, juice powder and other products. Existing shortcomings such as large power consumption, large volume, easy to stick to the wall, large one-time investment, etc. Under the heavy pressure of national environmental protection and people's increasingly demanding food, spray boring equipment must adhere to its use in the food industry You need to do your best.
Sticking wall becomes the number one problem
Wall sticking is an outstanding problem that hinders the normal operation of spray drier. Food materials rich in animal fats are often deposited on the wall of the drier. With the passage of time, these food materials will gradually evolve into a source of pollution, damaging food health. Therefore, many manufacturers of spray dryers have cooperated with experts and scholars to find out some ways to deal with the problem of sticking to the wall.
They thought that because the wall temperature of the spray drier was too high, the product became sticky, so the drier room was changed to a sandwich structure to improve the cooling efficiency; the objects such as vibrators and air hammers were used to separate the sticky wall objects; the cyclones were passed through the tower wall. The tangential introduction of the secondary air cooling tower wall; the polished bottom of the dry room wall often uses the cone bottom to lower the material to stay; and some companies have added new skills such as anti-stick sweeping walls ...
Excessive volume faces placement problems
Excessive volume is constrained by the placement area. Following people's attention to food production conditions, many food companies have established 300,000 or 100,000 dust-free purification workshops. However, because of the large volume of spray dryers, they cannot be placed in clean areas. Many companies will Pick and place the collected material in a clean area, and place other parts elsewhere.
Facing this situation, it is necessary to improve the sealing function of the spray boring equipment system to prevent external environmental pollution.
Material manipulation can be changed intelligently
The spray drier requires particles of the product to be dispersed, the residual moisture content, the bulk density, and the shape of the particles in accordance with accurate specifications during operation. Only the particles produced can achieve the ambition. Taking bulk density as an example, in the process of spray drying, bulk density is one of the important characteristics of food, and each measure must ensure the reached bulk density during the operation process. Affecting the bulk density are related to powder temperature and humidity, feed temperature, particle size distribution, inhaled dry air temperature, product discharge temperature, air touch method, sprayer type and the orientation set in the spray drier.
To ensure that the bulk density of food raw materials reaches the ambition, an experienced teacher is required to sit down. However, with the advent of the intelligent era, if the spray drier can analyze and judge the material's required spray temperature and duration according to the humidity, orientation, particle size, etc. of the material, the equipment's dependence on people can be greatly reduced.
Handling environmental protection and energy saving issues is urgent
Although the spray is dry, there is no dust problem in the production process, but the dust is simply generated at the product production port. It is an indisputable reality that the thermal efficiency of other spray drying equipment is low. Generally, the inlet temperature is about 150 ° C to 250 ° C, and the outlet temperature is 60 ° C to 100 ° C. .
In a word, the application of spray boring in the food industry not only overcomes the defects that the materials are not easy to store, retains the nutritional value of the materials, but also simplifies the production process and avoids the dust problem in the boring process. With people's in-depth research and development of spray boring skills and equipment, more and more spray boring equipment will be presented in the shopping mall, and the food industry will accelerate its development and have a broad prospect.
At present, some enterprises have been equipped with cyclone separators to deal with the problem of dust, and equipped with waste heat recovery equipment to deal with the problem of low thermal efficiency. However, the results are not satisfactory. It can be seen that spray boring equipment on the road of energy saving and environmental protection also needs to increase research and development and continue to move forward.
In the process of producing nanometer calcium carbonate, the boring process is undoubtedly an important part of the entire process and also a part of the required energy consumption. The continuous research on nano-calcium carbonate has found that the application of spray drying machine treatment in the drying section has a very significant effect. Reduce energy consumption, improve the working environment, it is important to improve the quality of products. The following is the detailed drying process for nano-calcium carbonate spray drying machine.