Gas Oil Gas Fired Waste heat boiler is the equipment that uses the flue gas discharged after the fuel is done to reuse, and the waste heat boiler produces steam, hot water, thermal oil and so on through the recovery of waste heat. The efficiency of energy utilization has been further improved. For example, gas turbine generators can use waste heat boilers to increase power generation by 50%, and high-power diesel generators can increase power generation by 6% to 22%.
Gas Oil Gas Fired Waste Heat Boilers Manufacturer
Waste heat boiler is the main product of our company, in nearly 30 years of waste heat boiler design, manufacturing, commissioning, operation process, we have successfully mastered the key technology of waste heat boiler. For different types of waste heat boiler design, we use the corresponding configuration to design, in order to achieve the best use effect. And independently developed the design software, greatly improve the design and production efficiency. So far, our company has developed more than 1,000 sets of various types of waste heat boilers for users around the world, and the use of waste heat boilers to recover useful energy is also a practical response to the national “energy conservation and environmental protection”, “recycling”, “green emissions” call.
Gas Oil Gas Fired Waste heat boiler is the equipment that uses the flue gas discharged after the fuel is done to reuse, and the waste heat boiler produces steam, hot water, thermal oil and so on through the recovery of waste heat. The efficiency of energy utilization has been further improved. For example, gas turbine generators can use waste heat boilers to increase power generation by 50%, and high-power diesel generators can increase power generation by 6% to 22%.
Definition of waste heat boiler Waste heat boiler is the use of various industrial processes in the waste gas, waste or waste liquid in the sensible heat or its combustible substances after the combustion of heat boiler, or in the combined cycle unit of gas, the use of high temperature flue gas heat discharged from the gas turbine gas steam generator boiler. Industrial waste heat boilers can be subdivided into power station waste heat boilers and other industrial waste heat boilers.
In terms of its environment, other industrial waste heat boilers operate in a harsh environment, the design and manufacturing process is more complex, most of them are non-standard products. Third, the characteristics of gas steam generator waste heat boiler Waste heat boiler is generally composed of drum, evaporator, superheater, energy-saving device, smoke box and flue and other components. Compared with conventional boilers, there is usually no combustion chamber waste heat boiler with wide flue gas adaptability. The boiler system has the characteristics of compact structure, reliable operation, stable operation and long service life.
Waste heat boiler The difference between gas steam generator furnace and conventional boiler is that the heat source of heating is different. The heat source of waste heat boiler can be high-temperature flue gas waste heat, chemical reaction waste heat, combustible waste gas waste heat, and even can use high-temperature product waste heat. On the one hand, waste gas and waste energy in industrial production can be used to produce steam for heating. At the same time, it can also settle down environmental pollutants such as dust in the waste gas steam generator gas, reducing the emission of solid, liquid or gaseous harmful substances.
Technical Parameters
| Model | Rated thermal power（t/h/MW） | Working pressure（MPa） | Rated output water temperature（℃） | Return water temperature（℃） | Maximum transport size(m) (L×W×H) |
| DZL1.4-0.7/95-70-AⅡ | 1.4 | 0.7 | 95 | 70 | 5.7×2.5×3.5 |
| DZL2.8-0.7/95/70-AⅡ | 2.8 | 0.7 | 95 | 70 | 6.3×2.6×3.6 |
| DZL4.2-1.0/115/70-AⅡ | 4.2 | 1 | 115 | 70 | 7.3×3.2×3.6 |
| DZL7-1.0/115/70-AⅡ | 7 | 1 | 115 | 70 | 7.2×3.3×3.6 |
| DZL10.5-1.0/115/70-AⅡ | 10.5 | 1 | 115 | 70 | 8.8×3.7×3.7 |
| DZL14-1.0/115/70-AⅡ | 14 | 1 | 115 | 70 | 9.7×3.4×3.7 |
Working principle of waste heat boiler
The design of energy saving waste heat boiler is a complex and complicated large-scale process with high reliability and economy requirements. At present, there are widespread problems such as large dependence on experienced designers, long design cycle, poor knowledge reuse, etc. Whether we can quickly develop new products required by customers is related to the survival and development of enterprises.
Waste heat boilers are divided into fire tube type and water tube type. Its structure is similar to that of an industrial boiler. Fire tube waste heat boiler has large water storage capacity, and the steam pressure fluctuation is small under the condition of smoke volume and steam consumption fluctuation, but its evaporation and steam pressure are limited by the diameter of the drum and operating conditions.
In addition, due to poor cooling and large temperature stress, the pipe end and tube plate should not be used in the case of high smoke temperature (higher than 600℃) and thick tube plate, and should use water pipe waste heat boiler. Water tube waste heat boiler has two circulation modes: auxiliary circulation and natural circulation.
Waste heat boiler A boiler that produces steam or hot water from the gas or waste gas in the industrial production process, waste liquid, and the heat from the exhaust gas of certain power machinery. The exhaust temperature of various smelting furnaces and roasting kilns is 650 ~ 1250℃; The exhaust temperature of power machinery such as gas turbines and diesel engines is 370 ~ 540℃.
By installing a waste heat boiler to absorb some of the heat in these exhaust gases, the utilization of heat energy in the whole system can be significantly improved. For example, after the waste heat boiler is installed in the steel rolling heating furnace, the heat energy utilization rate of the whole system can even be increased by about 1 times.
The flue gas temperature entering the waste heat boiler is an important factor to determine the heating surface layout of the waste heat boiler. If the inlet flue gas temperature is 400 ~ 900℃, the boiler is mainly set up convection tube bundle, not set up the furnace chamber; However, there are exceptions when the melting point of the smoke is low, and the cooling chamber should be set up to control the temperature of the inlet smoke into the convection flue, so as to avoid the ash and slag bridging between the convection pipe rows.
In the cracking process of chemical production, in order to avoid the re-polymerization of high temperature cracking gas, it is necessary to rapidly cool the high temperature cracking gas to the temperature at which the cracking reaction stops, and then the waste heat boiler becomes an indispensable quenching process equipment.
After the high temperature dust containing waste gas passes through the waste heat boiler, in addition to reducing the temperature, it can also settle a part of the dust particles, which is beneficial to reduce environmental pollution and select the dust collector. In the process of chemical production, the exhaust temperature of the waste heat boiler depends on the requirements of the next process.
Waste heat boilers used in industrial furnaces generally use induced draft fans to exhaust gas to the atmosphere; Waste heat boilers used in power machinery and chemical production processes rely on the pressure of the intake air itself to pass through the waste heat boiler and go into the atmosphere or into the next process unit.
When the imported flue gas temperature or exhaust gas combustion temperature is above 1100 ° C, its layout is not much different from that of general industrial boilers. When the high temperature waste gas contains a lot of accumulative fine ash, the boiler tube row should be vertically arranged, and the flue gas should be longitudinally washed at a high smoke speed (about 20 m/s).
For high temperature waste gas containing corrosive soot, the flow rate should be low (about 8 m/s) and uniform, and other anti-wear measures should be taken for corrosive high temperature waste gas containing sulfur dioxide (SO2), usually the smoke exhaust temperature should be higher, rather than heating the feed water economizer, the purpose is to improve the metal wall temperature and prevent metal from being corroded by sulfuric acid.