In coal-fired power plants, the dewatering warehouse dehydrates the slurry from the bottom of the furnace and the mortar after the furnace until the moisture content is below 30%, and then loads the slurry to the outside. The principle and process is as follows: The ash slurry is continuously injected into the chamber from the upper mouth near the center of the dewatering chamber, and the ash slurry slowly settles down. The upper clear ash water overflows from the zigzag overflow weir around the upper mouth of the dewatering chamber, and flows into the supporting efficient thickener, or sedimentation tank and reservoir for gradual clarification. The clarified water can still be used for ash cooling and hydraulic transportation, which realizes the recycling of ash removal water. High efficiency thickener, sedimentation tank, reservoir after thickening the mortar is still pumped back to the dewatering bin. After the level of ash and slag deposited in the dewatering chamber reaches the rated height, the injection of mortar will be stopped, and then the water content of ash and slag will be reduced to less than 30% after 4 ~ 8 hours of calm filtering. Finally, the bottom ash sluice gate will be operated to release the dehydrated ash and load it to the truck for transport.

The center of the buffer disk is a buffer cup lined with cast stone, surrounded by a porous disk. The mortar is first buffered by the buffer cup, and then evacuated by the porous disk and poured into the bin, so that the slag slurry in the torrent is fully buffered, which is conducive to the ash precipitation and reduce the ash content of the overflow water.

The central water filter device is composed of a number of sections of the filter heart under the pile and into the joint without bolts, in order to use a special anchor claw from the upper section of the load and put forward, so the replacement of the filter core is convenient; The triangular perimeter filter element is also easily replaced by cartridge.

Technical features:

TSC-n dewatering warehouse is a new dewatering equipment designed by our company on the basis of the introduction and digestion of foreign technology and after years of practice. The main structural features are as follows:

1. The water filter device around the dewatering warehouse replaces the original groove water filter plate structure with the triangular stainless steel filter plate type, and the fixed structure of the warehouse wall is changed from the original welding to the pin type connection structure with the upper and lower support, realizing the bolt-free connection. Easy and quick disassembly. At the same time, the Angle between the filter plate and the silo wall is increased, which reduces the phenomenon of hanging slag on the silo wall.

2. The water filter device in the center of dewatering warehouse adopts the hanging cage type stainless steel filter element stack structure to realize bolt-free connection. The filter element can be regenerated after cleaning or pickling. Greatly prolong the service life of the filter element. When replacing or repairing the filter element, the filter element can be lifted out of the warehouse or put in through the special anchor grip of the filter element hoisting on the top of the warehouse, so that the maintenance is convenient and quick. At the same time, because the maintenance personnel do not have to enter the warehouse to work, greatly reduce the risk of filter element replacement.

3. The dewatering warehouse uses the "four-screw suspension four-wheel slag discharge door". It is convenient to adjust the gap between the slag door and the slag outlet, and it overcomes the disadvantage of the difficulty in adjusting the gap between the door of the traditional dewatering bin crank-wheel type slag door. The slag drain door is equipped with an opening indicator device, and the opening degree of the slag drain door can be understood in the control room, which is very necessary for the site operator.

4. The sealing degree of the dewatering warehouse slag door is one of the important indicators of the product performance of the dewatering warehouse. The dewatering chamber adopts T-type sealing ring structure and is fixed by pressing blue. Self-sealing structure of the gas nozzle, the increase in the sealing ring pressure, not only will not cause the sealing ring gas nozzle out and gas leakage, and with the increase of air pressure and further enhance the sealing performance. Pressure blue fixed to overcome the seal ring in the operation of the equipment easy to fall off the disadvantage. Although the V-ring adopts the pressure blue fixed way, but because the V-ring is not a sealing cavity structure, it is easy to cause gas leakage phenomenon. Although the ingot sealing ring uses the sealing cavity structure, the air nozzle is sealed with O-ring, which is easy to cause gas leakage. At the same time, because of the embedded structure, the sealing ring is easy to fall off.

5, the slag door adopts electric operation, manual standby reliable control. Manual control is used in case of failure of electric control or loss of power in dewatering chamber control room to ensure that the slag door can be opened and closed in any case. The slag door switch and the sealing ring are interlocked in charge and discharge control:

6. When the slag door is not completely closed, the sealing ring can not be filled with air to prevent the sealing ring from cracking;

7, slag door switch action, the sealing ring is compressed by negative pressure, prevent the sealing ring by slag door abrasion, so as to ensure its long life.

8. The buffer disk is a porous disk lined with cast stone at the slurry inlet. After the ash slurry of the torrent enters the buffer disk to be buffered, it is evacuated through the porous disk and diffused into the silo to reduce the disturbance of the slag slurry to the deposited ash in the silo as far as possible, so that the water quality of the overflow water can be further improved.

Main technical parameters:

Main installation size: