Door type slag extruder
key word：Heat exchange element
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Product description
Door type slag extruder
1. Introduction
1.1. Purpose
The portal slag extractor is the main equipment of dry slag removal system of coal-fired boiler in thermal power plant. It intercepts and initially breaks the high-temperature slag produced by the boiler into the dry-type slag extractor, In this way, the large slag block is avoided to fall directly on the conveying chain of the dry-type slag extractor, thus protecting the dry-type slag extractor; at the same time, when the dry-type slag extractor or other equipment needs to be repaired, it can also play the role of closing the door.
1.2. Model meaning
MJZ-*
MJZ -- Model
* -- effective width (mm)
1.3. Structural features
The door type slag squeezing machine is composed of shell body, guide rail, slag extrusion head, push rod and support platform, hydraulic station system, electrical control system and video monitoring system. The large slag falling from the furnace is blocked by the guide rail of slag extruder. The operator starts the corresponding slag extrusion head group through the video monitoring system to crush the large slag. The slag squeezing head is driven by hydraulic system, and the hydraulic station can be shared with other equipment of slag removal system.
2. Main technical parameters
See table 59-1 for the main technical parameters of the portal slag extractor.
Table 59-1 main technical parameters of portal slag extruder
| Parameters | Model | ||||
| MJZ-650 | MJZ-800 | MJZ-1000 | MJZ-1200 | MJZ-1400 | |
| Max. slag treatment (t/h) | 10 | 15 | 25 | 45 | 60 |
| Design feed temperature (℃) | 900 | ||||
| Rated slag extrusion pressure (MPa) | 12 | ||||
| Effective width (mm) | 650 | 800 | 1000 | 1200 | 1200 |
| Number of slag extrusion heads | 3~5 | 3~7 | 4~10 | 5~12 | 6~14 |
| Max. particle size of passing slag (mm) | 260 | ||||
3. Equipment appearance and structural dimensions
See Fig. 59-1 and table 59-1 for the structure and dimensions of slag extruder.
Table 59-2 structural dimensions of portal slag extractor
| Parameters | Model | ||||
| MJZ-650 | MJZ-800 | MJZ-1000 | MJZ-1200 | MJZ-1400 | |
| A | Based on the boiler type | ||||
| B | 650 | 800 | 1000 | 1200 | 1400 |
| C | 2700 | 2845 | 3045 | 3245 | 3450 |
| D | 4900 | 5050 | 5250 | 5450 | 5650 |
4. Selection method
The model is selected according to the type of dry slag extractor equipped with the boiler. The electric control system and hydraulic system are determined by the design form of the whole slag removal system.
5. Scope of supply and order requirements
5.1. Scope of supply
Complete machine supply, including slag extruder body, platform escalator, video monitoring system, local control box, hydraulic system. The local control box and hydraulic system can be selected according to the actual needs of users.
5.2. Order requirements
When ordering, indicate the boiler model, coal burning parameters, boiler slag discharge capacity, model of supporting dry-type slag extractor; at the same time, provide the layout size of supporting dry slag machine, the layout size of matching transition slag bucket and the electric control requirements.
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