Desulphurization process and advantages of weathering plate

Desulphurization process and advantages of weathering plate

Application and implementability of the processing technology of weathering board

1, can maintain the high efficiency of desulfurization and operation credibility

Because the desulfurizer circulates several times in the desulfurization tower body, the contact time between the desulfurizer and the dust is nearly 30 minutes, which further improves the utilization rate of the desulfurizer and the desulfurization efficiency. At this stage, the high-quality engineering and commercial service operation system software in Britain and France has been delivered and confirmed that for the dust circulating fluidized bed desulfurization process, the desulfurization efficiency can exceed 95% when CA/S=1.1-1.4. Therefore, for the soot desulfurization and ash removal reconstruction project of this new project, the processing technology can thoroughly consider the future SO2 and soot control regulations, and can release the provisions on the coal quality (sulfur content) of raw coal.

2, desulfurization desulfurizer can be secondary

In this paper, the desulfurizing agent was selected from the locally produced and purchased fast lime powder. After the specific operation, the operation cost can be fully considered, and the local high-quality and cheap calcium carbide slag powder in line with the desulfurization index can be used as the desulfurization agent.

The initial composition of hydrated lime [CA(oh)2] is greater than 80%

Particulate matter: greater than 200 mesh.

Weather-proof plate

3. Pollution control

The processing technology does not cause sewage in the whole process of desulfurization.

4. Technical advantages

This plan selects the flue gas circulating fluidized bed semi-dry desulfurization technology, and integrates the successful cases in the new project of desulfurization and ash removal of weatherproof board in the past ten years to carry out the design, with the following advantages:

(1) Compound adjustable circulating fluidized bed desulfurization tower

The large change of the wear-resistant lining compound will cause great harm to the smooth operation of the circulating fluidized bed dry dust desulfurization system software. At this stage, the solutions to this problem are as follows:

1) When designing the scheme, in order to ensure the desulphurization tower to operate at least load, the diameter of the throat of the desulphurization tower should be reduced to 500-600PA during low-load operation, so that when the desulphurization tower is overloaded, the pressure loss of the desulphurization tower can reach about 1000PA.

2) Clean the dust flow back method, set the pipe before the chimney to the desulfurization tower inlet, install the gate valve on the official road, turn off the gate valve when the desulfurization tower is overloaded, and open the gate valve when the low load operation, and mix the cleaning dust and waiting for audit dust into the desulfurization tower, so as to ensure that the tower body dust load is overloaded.

Weather resistant steel flower pot