Guide: The chain grate boiler belongs to the stratified combustion. The fuel enters the boiler through the feed port, and goes forward under the drive of the grate reducer, and burns uniformly. The ash after the fuel is burned is taken out of the boiler by the slag discharger to complete the combustion. The chain grate can be applied to both coal-fired boilers and biomass boilers. What are the combustion characteristics of the chain grate boiler? What is a biomass chain grate boiler?
The chain grate boiler belongs to the stratified combustion. The fuel enters the boiler through the feed port, and goes forward under the drive of the grate reducer, and burns uniformly. The ash after the fuel is burned is taken out of the boiler by the slag discharger to complete the combustion. The chain grate can be applied to both coal-fired boilers and biomass boilers. What are the combustion characteristics of the chain grate boiler? What is a biomass chain grate boiler? 1. Combustion characteristics of chain grate boiler
The chain grate boiler is a horizontal three-pass water-fire tube hybrid boiler, and a bunch of threaded smoke tubes are arranged in the drum. The left and right sides of the furnace are equipped with light pipe water-cooled walls. It adopts light chain grate to realize mechanical coal feeding, equipped with blower and induced draft fan for mechanical ventilation, and equipped with scraper type slag discharger to realize automatic slag discharge. The front and rear arches of the furnace adopt a new type of energy-saving technology furnace arch. The fuel falls from the coal hopper onto the grate, and after entering the furnace to burn, the flame refracts upwards through the back arch and passes through the combustion chambers on both sides of the body to turn to the front smoke box, and then fold back from the front smoke box to the tube bundle in the boiler and pass through the rear smoke box. It enters the economizer, and is then drawn by the induced draft fan through the flue to the chimney and exhausted to the atmosphere. The combustion method of the chain grate boiler and the wood-burning boiler is different.
1. The thermal efficiency of the boiler is above 77%, which is higher than the standard of "General Technical Conditions for Industrial Boilers";
2. The operation has been mechanized, which reduces the labor intensity of the furnace workers;
3. Quickly install and leave the factory. After arriving at the site of use, install valves and meters, drums, induced draft fans, flue ducts, economizers, dust collectors, and slag dischargers. The coal machine and water circuit can be operated, and it has the characteristics of quick start and fire;
4. Easy installation and movement can save a lot of infrastructure investment;
5, low calorific value ≥17750J/Kg, volatile matter>38.5%, ash content ≤32.4% solid fuel;
2. What is a biomass chain grate boiler
The biomass chain grate boiler uses biomass pellets and biomass briquette as fuel. The boiler runs automatically, automatically feeds, and automatically discharges slag. The 4t/2.8Mw steam or hot water boiler can use either a single drum or a hot water boiler. Double-drum arrangement; furnace types above 4t/2.8Mw are mostly double-drum arrangement. There are many types of biomass boilers, and users can choose them appropriately.
1. Features of single-drum biomass chain grate boiler
Two-wing flue design, the flue gas enters the front flue box from the rear two-wing flue to reduce the temperature of the flue and effectively prevent the tube sheet from cracking;
Threaded smoke tube design, strengthen the heat transfer effect, avoid dust accumulation in the smoke tube;
Optimized design of furnace arch structure, with wider fuel adaptability;
2. Features of double-drum biomass chain grate boiler
Large furnace design, optimized furnace structure, so that the fuel burns fully and thoroughly, and avoids coking;
Reasonable air distribution and a secondary air inlet system to ensure full combustion of volatiles and improve thermal efficiency;
Double-layer heat preservation, double sealing, reduce heat loss and improve heat utilization;
The combustion characteristics of the chain grate and the biomass chain grate boiler are introduced above. Users can choose the appropriate biomass furnace type and auxiliary equipment configuration according to their needs, buy suitable products at a satisfactory price, and ensure production needs and production benefits. . If you don't know how to choose, you can also entrust our company to make the selection and configuration plan.