desulfurized gypsum dryer for coal-fired power plants

Desulfurization Gypsum Dryer Overview

Desulfurization gypsum is usually produced by the flue gas desulfurization process of power plants, which contains a large amount of free water, and its physical properties are different from natural gypsum, so effective drying of it has high technical requirements. The design of desulfurization gypsum dryer mainly solves the problems of high humidity and strong adhesion of wet gypsum, which can efficiently remove water and ensure the quality and subsequent application of desulfurization gypsum.

Remarkable Features of Desulfurization Gypsum Dryer

1. High-efficiency drying: the equipment adopts advanced drying technology, which can remove the moisture in gypsum in a short time and ensure the quality of desulfurization gypsum.
2. Multi-functional design: through precise control of feeding, heating and discharging process, it makes the drying process more even and efficient.
3. Strong stability: with good load adaptability, it can run smoothly even if it encounters unexpected situation in the production process.
4. Low energy consumption: adopting high efficient heat exchange technology, it reduces fuel consumption and energy waste.
5. High degree of automation: modern desulfurization gypsum dryer equipment is equipped with intelligent control system, which can automatically adjust the operating parameters and reduce manual intervention.

Principle of Desulfurization Gypsum Dryer

It is mainly based on the contact and heat exchange process between hot air and wet materials. Wet desulfurization gypsum is fed into the dryer through a belt conveyor. The specific process is divided into the following working areas:

1. Guide zone: wet gypsum enters this zone, contact with high temperature negative pressure hot air, rapidly evaporate moisture. Due to the role of the coping board, gypsum will not occur bonding phenomenon, and smoothly into the next working area.
2. Cleaning zone: In this zone, gypsum is copied up by the platen and forms material curtain, and the sweeping device will clean up the gypsum adhering to the cylinder wall in time to avoid its negative impact on the equipment. At the same time, the cleaning device crushes the material lumps to further improve the heat exchange efficiency.
3. Low-temperature drying area: in this area, the gypsum has been low moisture state, further heat exchange, the moisture of the material is reduced to the set standard, to meet the drying requirements.
4. Discharge area: the dried gypsum is sent to the discharge port, the whole drying process is completed.

Advantages of Desulfurization Gypsum Dryer

1. High overload resistance: even if the handling capacity is large, the equipment can still work stably and reduce the breakdown and downtime.
2. High thermal efficiency: downstream drying mode makes the contact between hot air and wet materials more fully, low dryer outlet temperature, high thermal efficiency.
3. Stable full-break material curtain: by adjusting the operating parameters, you can make the material inside the dryer to form a uniform material curtain, enhance the heat exchange efficiency.
4. Reduce failure and clogging: The new feeding and discharging device effectively avoids clogging, discontinuity, unevenness and return material phenomenon, and reduces the load of dust removal system.
5. Optimize internal distribution: the optimization of internal structure enhances the cleaning and heat conduction of dispersed materials, effectively avoiding the problem of gypsum adhering to the cylinder wall, and improving the working efficiency.
6. Strong wear resistance: centering type pallet device reduces wear and power loss, prolonging the service life of the equipment.

Application Fields of Desulfurization Gypsum Dryer

1. Electric power industry: mainly used for gypsum treatment after desulfurization in power plant, desulfurization gypsum produced after using flue gas desulfurization technology.
2. Building materials: desulfurization gypsum can be used to produce building materials after drying, such as gypsum board, gypsum powder and so on.
3. Chemical industry: In some chemical industries, desulfurization gypsum, as a by-product, needs to be dried for subsequent utilization or storage.
4. Environmental protection field: to deal with sulfur dioxide in power plant and industrial waste gas, to reduce environmental pollution, and at the same time, to effectively utilize the desulfurization gypsum resources.

Desulfurization gypsum dryer not only solves the high humidity problem of desulfurization gypsum through efficient drying technology, but also improves its application value in various industries. With the strengthening of environmental protection policy, the treatment and reuse of desulfurization gypsum will become an important industry development trend.