Ⅰ, Product range
Steam boiler, rated evaporation capacity: 1-20t/h, rated working pressure: 0.7-1.6Mpa
Hot water boiler, rated power: 0.7-14MW
Others: Special design and manufacturing can be carried out according to various parameter requirements put forward by users. Provide product types that meet customer needs and customize products.
Ⅱ, Structural characteristics
1. Horizontal single-drum fire tube boiler. The boiler is composed of the upper body and the lower grate.
2. The boiler body is longitudinally arranged with a single drum. The drum and the water-cooled wall tubes on both sides form the furnace radiant heating surface, and the tube bundles on both sides form the convective heating surface.
3. The threaded smoke tubes in the drum form the fire tube convective heating surface. The tube sheet adopts a low-stress arch-shaped tube sheet without bracing. There are two types: fixed grate and chain grate.
4. The chain grate is supplied with air by compartments. The air volume of each air compartment is independently adjusted. The grate has stepless speed regulation.
5. For boilers with DZL4/DZL2.8 or less, they are delivered after the grate is built. For DZL6/DZL4.2 and above, the grate needs to be built on site (refractory materials are sent to the site together with the equipment. The boiler quotation does not include the cost of manual grate building.). The boiler body is delivered after unified furnace building and insulation.
Ⅲ, Performance advantages
1. The boiler is in assembled (quick-assembled) form, with a compact structure, small floor area, short installation period, low installation cost, and saving on infrastructure investment.
2. The designed flue gas temperature at the tube sheet is low. The smoke tube has a single return pass. The tube sheet is heated evenly, and the low stress of the tube sheet makes the boiler safe and reliable in operation and has a long service life.
3. The heating surface is fully and reasonably arranged. The boiler heats up and pressurizes quickly, has sufficient output, and high thermal efficiency.
4. The grate is supplied with air by compartments. The air volume of each air chamber is independently adjusted to make the fuel burn evenly and fully, and the fuel has wide applicability.
5.It has a high degree of automation, complete automatic control and detection instruments, is safe and reliable, and easy to operate.
The water quality standard of steam boiler when using chemical water treatment outside the furnace
Water quality requirements:GB/T1576 Water quality of industrial boilers
Note: Dissolved oxygen content: When the rated evaporation capacity of the boiler is ≥6t/h, it should be deoxygenated; when the rated evaporation capacity is < 6t/h, if local corrosion is found in the boiler, deoxygenation measures should be taken. The oxygen content of the boiler feed water for the steam turbine should be ≤0.05mg/L
Water quality standard for hot water boilers
Coal-fired steam boiler（1-20t/h Single drum）
1、Fan according to the user selected flue gas treatment equipment to do the final parameter verification (increase the flue gas resistance after adding environmental protection equipment)
Coal-fired hot water boiler（Single drum）
1、The feed pump is selected according to the user's hot water temperature.
2、Fan according to the user selected flue gas treatment equipment to do the final parameter verification (increase the flue gas resistance after adding environmental protection equipment)