Application scope of desulfurization butterfly valve:Environmentally friendly desulfurization butterfly valve, environmentally friendly desulfurization flange butterfly valve, environmentally friendly desulfurization clamp butterfly valve

The desulfurization butterfly valve can be widely used for regulating and intercepting fluid pipelines in hydropower, sewage, construction, air conditioning, petroleum, chemical, food, medicine, textile, papermaking, water supply and drainage, etc. It can also be adapted to different media such as water, gas, oil, etc. by changing the material, and is suitable for temperatures ranging from -20 to 80 ℃. By replacing the valve plate sealing ring, O-ring, butterfly plate, shaft and other materials, it can be applied to various media and different temperatures. The valve automatic control equipment is equipped with high-quality electric actuators or double acting pneumatic actuators, which can achieve both automatic and manual opening and closing functions. On the basis of the double eccentric butterfly valve, the widely used double eccentric butterfly valve has been further improved and formed. Its structural feature is that the axis of the valve stem deviates from both the center of the butterfly plate and the center of the body. The double eccentric effect enables the butterfly plate to quickly detach from the valve seat after the valve is opened, greatly eliminating unnecessary excessive compression and scratching between the butterfly plate and the valve seat, reducing the opening distance, reducing wear, and improving the service life of the valve seat.

Environmentally friendly desulfurization butterfly valveCharacteristics of Double Eccentric Butterfly Valve:
1. The double eccentric butterfly valve adopts a double eccentric structure, which has a sealing function that becomes tighter as it is closed, and the sealing performance is reliable.
2. The sealing auxiliary material is paired with stainless steel and nitrile oil resistant rubber, which has a long service life.
3. The rubber sealing ring can be located on the valve body or on the butterfly plate, and can be suitable for different characteristics of media for users to choose from.
4. The butterfly plate adopts a frame structure, with high strength, large overcurrent area, and low flow resistance.
5. The overall baking paint can effectively prevent rust and can be used in different media as long as the sealing material of the valve seat is replaced.
6. The double eccentric butterfly valve has bidirectional sealing function, which is not controlled by the flow direction of the medium or the spatial position during installation, and can be installed in any direction.
7. Double eccentric butterfly valve structure *, flexible operation, labor-saving, and convenient.

Environmentally friendly desulfurization butterfly valveStructural design of desulfurization butterfly valve:
1. Adopting a medium linear structure without eccentricity design, it has significant characteristics of low operating torque, and the economy is significant when configuring electric devices;
2. Reasonable design, compact structure, easy installation and disassembly, and convenient maintenance;
3. Adopting a rubber lined structure, the butterfly plate's circular sealing surface is precision machined to a high degree of smoothness, resulting in an extremely low friction coefficient for the rubber valve seat and a long service life for the valve;
4. The flow characteristics of the valve plate sealing surface are linear, with a small flow resistance coefficient and low valve flow resistance;
5. The balance and support of the designed molded rubber valve seat effectively avoid damage to the rubber caused by uneven force. When the valve is fully closed, the compression state of the rubber is maintained to maintain zero leakage;
6. The rubber sealing surfaces of the two ports of the valve protrude from the ductile iron flange surface, and no additional rubber sealing gaskets are required for valve installation in pipelines
7. The selection of the operating mechanism for butterfly valves is flexible;
8. The butterfly valve has a beautiful appearance and good corrosion resistance.

Standard specification for desulfurization butterfly valve:
Design and Manufacturing Standard: GB/T 12238-2008
Structural length standard: GB/T 12221-2005
Connection flange standard: GB/T 9113
Pressure and temperature rating: GB/T 12224-2005
Test and Inspection Standard: GB/T 13927-2008

Materials and working conditions of desulfurization butterfly valve parts:
The shell material is made of high-performance ductile iron GGG40
The butterfly plate material is made of alloy low carbon steel 1.4529
The valve shaft is made of stainless steel 2Cr13
Valve seat rubber sealing ring EPDN
The shaft sleeve is made of aluminum bronze

Structural characteristics of desulfurization butterfly valve:
1. The main structure of the desulfurization butterfly valve consists of valve body, valve disc, valve seat, valve stem, and transmission operating mechanism. The valve seat adopts a detachable structure and can be made of materials that are resistant to high temperature, low temperature, corrosion, light, and aging according to the physical and chemical characteristics of different media.
2. The inner and outer surfaces of the valve ductile iron shell can be coated with high-temperature electrostatic spraying epoxy resin powder coating, which has high corrosion resistance and a bonding strength of * with the ductile iron substrate. The coating degree is 0.20.5mm
Introduction to desulfurization butterfly valve:

1. In air pollution, sulfur dioxide is an important pollutant, and over 60% of sulfur dioxide pollutants come from industrial flue gas emissions. With the gradual improvement and enhancement of environmental standards in China, as well as the increasing awareness of the environment among the public, desulfurization treatment must be carried out for projects with industrial flue gas emissions in China in the future. One of the important components in flue gas desulfurization equipment is the valve, which is required to be able to withstand chloride, oxide, acid, as well as harsh abrasive wear and mud corrosion. The correct selection of valve materials and structural forms to extend the service life of the valve is the key to flue gas desulfurization butterfly valves.
2. A complete desulfurization system is needed in many industrial or power fields At present, the limestone gypsum wet method is used, with one furnace and one tower desulfurization device. The desulfurization efficiency of this desulfurization device can reach 95.5%. After passing through the desulfurization pipeline, the medium of the limestone slurry system will exhibit strong corrosiveness, which has strict requirements for the entire pipeline system, fluid control valves, and valve actuators. The desulfurization butterfly valve is designed and manufactured to meet the special requirements of the desulfurization system.
3. The desulfurization and denitrification butterfly valve is designed specifically for power plant desulfurization and denitrification projects, fully considering the corrosion and wear of the valve caused by desulfurization slurry, ensuring that the valve plate lining is a component that can come into contact with the slurry, while other components are not corroded by limestone (or lime paste) slurry. Therefore, the valve body and stem do not need to use expensive alloy (2205) materials, greatly saving costs. The valve seat design of the desulfurization butterfly valve separates the valve body from the fluid medium. Compared with other similar valves, it has a better way of securing the valve seat, quick on-site replacement of the valve seat, zero valve leakage, and low friction. The butterfly valve plate is made of high-performance alloy (2205) material, which effectively resists the corrosion and wear of the slurry.