21 ton 42 bar gas fired steam boiler

Boiler efficiency calculation formula

Definition of Boiler Efficiency is “The percentage of the total absorption heating value of outlet steam in the total supply heating value.” In other word, it is a rate how the boiler runs efficiently. The thermal efficiency of our coal-fired boilers is 84~92%, the efficiency of fuel and gas boilers is 96~99%, and the efficiency of biomass boilers is 86-93%. The higher the efficiency of the boiler, the better the heat transfer performance. Increasing boiler thermal efficiency can reduce boiler fuel consumption and reduce boiler operating costs. Increasing the thermal efficiency of the boiler is to increase the effective use of heat and reduce the heat loss of the boiler. The key point is to reduce the heat loss of the boiler exhaust gas and the loss of mechanical incomplete combustion.

35 tph SZS gas-fired water tube boiler project for dairy industryPlenty of steam is needed in the milk powder production process of sterilizing, concentrating and drying; therefore, a stable 21 ton 42 bar fired steam boiler has a direct impact on the milk production quality. Heilongjiang Feihe Dairy Industry Co., LTD., established in 1962, has won the Gold Award of Monde Selection. As hazy weather appears frequently in recent years, air quality issues have aroused great concern of the whole society. The Chinese government has successively launched "coal to gas" and other environmental policies to improve the air environment. Feihe Dairy is taking an active part in environmental protection, the company decided to replace the present 2 sets of 35 tph coal-fired steam boilers and one set of 20 tph coal-fired boiler with 3 sets of 35 tph gas-fired steam boilers. Considering that the steam boiler is a core equipment of the production line, the company had attached great importance to this purchase and held an open tender. ZOZEN successfully won the bid with excellent product quality and service, and provided the company with 3 sets of SZS series gas-fired steam boilers. This series of boiler adopts the design of membrane water wall; the gastight test must be done before installing thermal insulation layers, to ensure there is no flue gas leak under the condition of micro-positive pressure combustion and help reduce the heat loss of the boiler body. In addition, to effectively reduce the NOx emission, the boilers are equipped with large volume furnaces and advanced low NOx burners imported from Europe.

Unorganized 1, thermal power, cement, brick building materials, steel coking, coal-fired boiler, shipping, ports and other particulate matter emissions from the more serious business section and complete the depth remediation. Advanced nitrogen crew embodiment encourage gas, coal-fired units embodiment plume off white vapor recovery control. Before the end of June 2020, to achieve a comprehensive discharge standards garbage incineration industry.

2, to enhance the proportion of natural gas. Orderly development of natural gas peaking power plants and other interruptible user, in principle, to new natural gas cogeneration and gas chemical projects.

3, the implementation of total coal consumption control. By 2020, the total control in less than 27 million tons of coal; coal power accounted for the city's total coal consumption to increase the proportion of more than 65%. Continue to promote alternative energy coal and oil by 2020, electricity consumption (calculated as the supply of coal equivalent) accounting for over 60% of the total social energy consumption.

4, elimination of old coal-fired units. For shutting down environmental protection, energy consumption, safety and other 300,000 kilowatts coal-fired units of non-compliance. No new coal-fired units, the new rely mainly on the area of ​​non-fossil energy generation and transport electricity to meet foreign consumption.

Gas steam thermal cracking reaction furnace gas steam oven should be carefully introduced reflect in the use, to guard against water, acid, alkali and leakage into the low boilers using the system, the system should be installed filters installed to prevent debris into various types, to ensure the purity of the oil . Gas and steam is easily oxidized during heating, the acid value of the oil is increased at high temperatures and a large change rate. Steam oven gas kinematic viscosity gradually increases, which is due to the thermal cracking gas vapor component at high temperature, thermal polycondensation reaction. Thermal cracking reaction resulting in generation of small molecule compounds, to reduce its viscosity; oxidation temperature when the inner conduit thermally cleavage occurs at 300 ~ 400 ℃, coke formation in the pipe, the inner wall of the device, leading to heat accumulation pipe affect the heat transfer efficiency, sludge poor flowability, transfer oil accelerated aging failure, but also to the furnace, pipes local overheating, impairing the mechanical strength of the threat to personal safety.