Chain boiler denitrification

The metering distribution system mainly includes devices such as electric regulating valves, electromagnetic flow meters, solenoid valves, pressure reducing valves, filters, distributors, float flow meters, and pressure gauges.

The PLC metering distribution module integrates this part into a single module, while also placing the PLC control system and touch screen within the module. This module is the core control part of the entire denitrification system and is a product independently developed and designed by our company. The entire module has undergone multiple iterations and updates, continuously optimized, while also incorporating control and interlock protection concepts. As a result, this equipment now features high automation, high safety, and high stability. According to customer feedback, our denitrification equipment products lead the industry in both user experience and appearance.

This module has 6 injection points, corresponding to six denitrification spray guns. The maximum flow rate for each branch is 100L/h, and the flow rate of each branch is adjustable.

1. Main Functions

1. Filter the compressed air used in the denitrification system to remove condensed water generated in the pipelines.

2. Regulate the pressure of the compressed air.

3. Filter out solid impurities in the reducing agent to prevent excessive impurities from clogging the pipelines and damaging control components.

4. Control and measure the usage of compressed air and reducing agent, and distribute the reducing agent and compressed air.

5. Output compressed air and reducing agent to downstream equipment through multiple channels, at equal pressure, and independently.

6. Record, store, and process data such as pressure and flow during equipment operation, automatically generating tables or curves for user reference.

2. Working Principle
The reducing agent passes through the pressure gauge, flow sensor, electric actuated ball valve, and angle seat valve in sequence, and is metered and output according to the flow rate set by the control system. After distribution, pressure stabilization, and buffering, it is sent to the reducing agent outlet pipeline at the same pressure through adjustable float flow meters.

Compressed air is filtered by a precision filter and then passes through the pressure gauge, flow sensor, solenoid valve, and air source processor in sequence before entering the compressed air distributor. It is then sent to the compressed air outlet pipeline at the same pressure through ball valves.

The PLC control system can control the booster pump, regulating valve, reducing agent solenoid valve, and compressed air solenoid valve via the touch screen, and monitor the reducing agent flow through rotor flow meters. The PLC control system can also adjust the electric actuator according to the set reducing agent flow rate, valve opening, or nitrogen oxide concentration to meet the required specifications.

3. Scope of Application:

① Chain grate boilers, circulating fluidized bed boilers;

② Hot water boilers, steam boilers, thermal oil heaters;

③ Pulverized coal boilers, biomass boilers, gas boilers, waste incinerators;

④ Ceramic kilns, cement rotary kilns, lime kilns, steel rolling kilns.

Industries: Heating, papermaking, printing and dyeing, washing, ceramics, cement, food, chemical, pharmaceutical, steelmaking, and many other industries.

4. Equipment Dimensions

5. Product Appearance

Ms. Fu   I7324005195

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