Different users have different requirements for boiler configuration. For example, some users need NOx emission less than 30mg/Nm3, and some users only need it less than 80mg/Nm3. The better auxiliary equipment configuration is used, the price of boiler will naturally rise.
Different users have different requirements for the configuration of the whole boiler system, and the brand and quantity of auxiliary machines also affect the price. The better the brand, the more expensive the price. For ex...
Safety accessories of the thermal oil heater include safety valves and bursting discs, stop valves, pressure gauges, etc.
The basic configuration of low nitrogen thermal oil heater system includes the following main parts:
1. Combustion system: including furnace, burner, ignition device, etc.
2. Oil circulation system: circulating oil pump, oil injection pump, storage tank, expansion tank, etc.
3. Control system: complete with boiler control box.
4. Air-smoke system: refers to the s...
Raw water: refers to water that has not been disinfected and filtered, such as river water, stream water, well water, reservoir water, etc.
Feed water: refers to the chemical water delivered from deaerator to boiler by feed pump.
Make-up water: Make-up water for boiler is to make up the lost part or externally supplied part after completing a steam-water cycle, so that the boiler can always operate at a safe water level.
Recycling condensing water: When the heat energy of steam or hot water i...
(1) The mortar in the outer brick joints of the furnace wall can be ground into powder by hand without bonding, which indicates the mortar has been dried.
(2) Use a thermometer to insert 100mm from the outer wall. When the temperature reaches 50℃, it can last for 48h, and the outer wall temperature should be uniform.
(1) The furnace drying time depends on the shape, structure and humidity of the furnace. It takes 4 ~ 7 days for small low-pressure boilers and 10 ~ 15 days for heavy furnace walls.
(2) First, bake with wood, on the ash hopper of the room furnace and the grate of the chain furnace, use small fire for natural ventilation within 2 ~ 3 hours. When the temperature of combustion chamber rises, the ventilation capacity will be improved, and the flue damper can be turned down a little. It is best to k...
(1) The boiler and all auxiliary equipment are installed, and all tests such as ball passing test, hydrostatic test and air tightness test are qualified.
(2) All rotating devices, feed water pumps, condensate pumps, salt solution pumps, blowers and induced draft fans for coal conveying, combustion and ash removal are qualified for trial operation.
(3) The fuel and water supply are guaranteed, the steam, water and flue gas piping system are normal, and the connection unrelated to the boiler to ...
Liquid fuels mainly include petroleum, gas oil, kerosene, heavy oil, coal tar, gasoline, alcohol and so on. The liquid fuel is mainly composed of seven components: carbon (C), hydrogen (H), oxygen (O), nitrogen (N), sulfur (S), ash (A) and moisture (M). It is characterized by high content of carbon and hydrogen and low moisture, so its calorific value is very high, usually 40600〜43100kJ/kg.
Among the commonly used steam boilers, those under the pressure of 3.825 MPa are called medium pressure steam boilers, and those under the pressure from 9.8 MPa to 13 MPa are called high pressure steam boilers. Different boiler pressures have different requirements for water quality. Generally, medium and low pressure steam boilers need to supplement softened water, and softened alkali-free water, while high pressure boilers need desalted water. The different water qualities require different corresponding treatment equipment.
