(Iii) use of a waste heat boiler for heat recovery. Using the waste heat boiler using waste heat discharged from the heat of the flue gas in a boiler to heat water or generate steam. Such waste heat boiler is provided thermal oil furnace itself does not change the fuel consumption, the waste heat boiler to produce steam or hot water may be used for the production and the occurrence of heating, thereby indirectly ADSF fuel savings. A waste heat boiler provided the following effects: First, since the heat recovery water, it is easy to improve the thermal efficiency of the furnace. Second, because the number of boiler flue gas can be centralized heat recovery, thereby reducing the cost of construction of the heat recovery unit.

Multi fuel design CFB boiler Challenge

Multi-fuel CFB boilers typically burn a mixture of waste or alternate fuels along with natural gas, fuel oil,or pulverized coal.This provides an opportunity to produce steam at lower cost than a basic fossil fuel fired unit, but it also makes operations more challenging.Waste and alternate fuels vary in Btu content per volume and their supply is often not consistent. This significantly affects combustion stability and the ability to reliably meet load. More expensive fossil fuels must be used when waste and alternate fuel is not available or to make up for low Btu. Managing this without excessive cost is difficult.In addition, operating within emissions constraints may be a problem with multiple fuel streams in the mix.

Expected by the end of October this year, Baoji City, Shaanxi Province will be completed 35 tons of steam, Chaigai actions totaling 379 coal-fired boilers, to achieve 35 tons of steam coal-fired boilers "clear" mandate.

Since 2013, environmental departments at all levels Baoji joint cooperation, overcome difficulties, temper forward, the coal-fired boilers Chaigai range extends from the urban area to the entire administrative region, Chaigai scale from 10 tons of steam and extended to the following 35 tons of steam, so far a total of Chaigai coal-fired boiler to reach 5424 units 8060.8 tons of steam, strong contributing atmospheric pollutant emissions and urban air quality continues to improve.

This year is the 35 tons of steam coal-fired boilers "cleared" ending of the task, do the task Chaigai 35 379 tons of steam coal-fired boilers is still very difficult, which, as a county district government initiative to advance planning, increase investment in clean heating, diversified ways to implement the transformation of coal-fired boilers. Currently, there are 59 sets of undesirable coal-fired boilers were removed.

Baoji City, iron-fisted rule haze headquarters director, he said: "We, as the lead department, attaches great importance to coal-fired boilers Chaigai work, held a special meeting to study the deployment of Chaigai work, in accordance with the door-to-one by one to find out the basis on Chaigai way, go through the county publicity, on-site guidance to support, on-site supervision and verification, etc., to urge coal-fired boilers Chaigai work for the city within the new investigation and the coal-fired boiler is within the range of Chaigai, one will find a Chaigai to ensure that before the end of the city's 10 coal-fired boilers Chaigai work perfect ending. currently, the city Qishan County, New District, Jintai District Chaigai has been basically completed the task. "

Gas Steam Boiler Water Wall Tube Explosion Analysis and Processing With the west-east gas project in-depth and complete, and the "coal to gas," the implementation of Beijing, Urumqi, Daqing and other cities and district heating heat source to promote the use of gas-fired boiler . More commonly used gas-fired boiler type D, type 0, A-type, p-type [1-2], these four basic types of furnaces by dividing the furnace cross-sectional shape. Wherein, D, 0, A-type small capacity boilers belonging horizontal boiler, boiler Ding is a large vertical boiler. The four furnaces are used membrane wall structure, eliminating the flue gas leak, reduce heat loss and improve the thermal efficiency of the boiler, ensure the stability of the structure. A compact, short installation period, high thermal efficiency, low noise, low energy consumption, low emissions, long life (design life 30a), adaptable load fluctuations and other characteristics can be controlled by computer program running faults and Protective function. Domestic slightly less than the amount of evaporation experience in the development of high-power gas ton 5 firering steam boilers prices in india in the 75t / h or more, most of the development work is based on the introduction of Europe and learn from small gas steam boiler above. China's own design of high-power gas steam boiler in the course of running more than a vibration, burst pipes and other problems. This paper discusses some evaporation of the squib causes and treatment of boiler waterwall 160t / h of a gas steam.