Working principle of drying equipment
The drying process needs to consume a lot of heat energy. In order to save energy, some materials with high moisture content, suspensions or solutions containing solid substances are generally first dehydrated by mechanical heating or evaporation, and then dried in a dryer to get dry solids.
During the drying process, the transfer of heat and mass (wet component) should be completed at the same time to ensure that the wet component steam pressure (concentration) on the surface of the material is higher than that in the external space, and the temperature of the heat source is higher than that of the material.
Heat is transferred to the wet material from the high temperature heat source in various ways, so that the wet component on the surface of the material vaporizes and escapes to the outside space, resulting in the difference in the wet content between the surface and the inside of the material. The internal wet component diffuses to the surface and vaporizes, so that the wet content of the material is constantly reduced and the overall drying of the material is gradually completed.
The drying rate of materials depends on the surface vaporization rate and the diffusion rate of internal wet content. Generally, the drying rate in the early drying stage is controlled by the surface vaporization rate. Then, as long as the external drying conditions are unchanged, the drying rate and surface temperature of the material remain stable, this stage is called constant speed drying stage; When the moisture content of the material decreases to a certain degree, the diffusion rate of the internal wet component to the surface decreases, and is less than the surface evaporation rate, the drying rate is mainly determined by the internal diffusion rate, and decreases with the decrease of the moisture content. This stage is called the deceleration drying stage.
In addition, technological progress will reverse the current domestic drying equipment export situation. At present, China has not formed the export scale of drying equipment, the export volume is less than 5% of the total, and mainly exported to Southeast Asia. But according to the authoritative forecast, with the development of technology, the proportion of China's export drying equipment will increase from 5% to 10% of the total production in the next few years, and the export market will also expand from Southeast Asia to Europe and America.
Our company's existing YZP 8-hole brick press inventory is handled at a low price
The company currently has a variety of specifications and models of cone breaking broken walls and rolled mortar walls for sale at a low spot price. Interested parties, please contact: 13324215382.
The company currently sells a variety of mining equipment at low spot prices. Interested parties, please contact: 133242153820421-7268358.
On auspicious days in the first month, when the auspicious festival begins. At the beginning of the New Year, the festivities of the Spring Festival still linger in my heart
In order to meet the installation schedule of customers before the Spring Festival, workshop workers worked overtime to grab tasks. On January 15, 2023, three sets of equipment were installed Φ The 5x10m storage tank is shipped and hoisted in place.
On January 12, 2023, the 2022 Annual Commendation Conference of Chaozhong Development was held in the conference room on the second floor of the company. Mr. Chen Guangping, the general manager of the company, managers of all departments, exemplary individual who were commended and some employee representatives attended the conference.