1. The concept of absorption of heat absorption systems using flue gas heat exchanger is used to recover waste heat of flue gas in the gas household for combi boiler use pump, the process shown in Figure 1. In additional gas absorption heat pump with the boiler flue gas condensation heat exchanger, an absorption heat pump with natural gas as driving power, the occurrence of cold medium, the medium is cooled in the flue gas in the flue gas condensing heat exchanger, heat transfer process can used direct touch touch-type heat exchanger may direct the exhaust gas temperature in the system drops below the dew point, condensation of water vapor in the flue gas heat to reach the intent of flue gas heat recovery and water. Heat supply network backwater into the primary absorption heat pump is heated, and then into the gas boiler is heated to a temperature of planning to give out, the end of the heating process water heating network. Exhaust gas boiler into the bottom of the chimney, the draft fan is placed on top of flue gas condensation heat is withdrawn and mixed into the flue gas absorption heat pump of flue gas condensation heat exchanger, the system exhaust temperature drops to 30 ℃ vented to the atmosphere into the chimney after less. Out of the chimney flue gas between flue gas and returned to port additional partitions. Our test systems selected direct touch-type touch flue gas condensation heat exchanger. This allows the system to use the skills heating power (system for low level heat than the heat input in the system of gas) progress more than l0%. The skills currently in Beijing General Logistics Department has recovered waste heat boiler room engineering, Beijing bamboo plant to recover waste heat boiler used in the project, to obtain a better energy-saving effect. Such incremental contribution skills (including contribution absorption heat pump, heat exchanger and flue gas condensation supporting pumps, valves and other equipment) generally less able to recover 3a.

2. Mechanism smoke condensate purification of exhaust smoke condensate component of the purification of exhaust components is messy heat and mass transfer process. Condensing the flue gas is flue gas water vapor condenses on the heat exchanger wall or film into fine droplets, and large water drops or fine and then converging streams. In this process, the flue gas condense different components will be dissolved in an aqueous solution, an aqueous solution of the condensation reaction may occur in the flue gas to remove harmful substances such harmful exhaust gas content decreased. NOx in the flue gas purification process condensate: there are nitrogen oxides NO, NO2, N2O, N2O5 etc., a general term NOx. The primary material constituting the atmospheric pollution and photochemical smog is NO, NO2, other ignored. Nitrogen oxides in the boiler flue gas first is NO, and NO2 content less. NO slightly soluble in water, the dissolved amount is negligible. NO2 soluble in water to form aqueous nitric acid and nitrous acid. NO2 is a water-soluble reaction formula: 2NO2 + H2O9HNO3 + HNO2.

Low temperature hot water household for combi boiler use pump economizer regular cleaning to water causes and explanation: A boiler for hot water boiler which, I believe we will not feel it is strange, but should also have a certain degree of knowledge and understanding, because the site He has been engaged in the study of their work. And here, will continue, so that we become more familiar with hot water boiler, at the same time, can also complement and expand their expertise in this area, so a lot of their own benefit. 1. The low temperature hot water boiler economizer, why should be cleaned on a regular basis? This is because the low-temperature hot water boiler economizer this means that after a long time use, the efficiency of heat transfer to the heat receiving surface, due to various factors, would decline, then, will increase boiler fan output, as well as increased power consumption. In addition, there may, and will bring some security risks and other risks. Therefore, to be cleaned regularly to avoid these problems, so as to ensure the efficiency of hot water boilers. 2. pressure hot water boiler, which valves should it use? And, the need for the user's own option? Pressure hot water boiler, a valve that should be used, in general, most are disposable valve instrument, because it is more appropriate, but can also have a good effect. These valves, usually without the user's own option, when the boiler factory, the factory will be configured.

Analysis of Zhengzhou industrial household for combi boiler use pump scaling the real situation of Zhengzhou industrial boiler scaling the real situation of Zhengzhou industrial boiler scaling analysis of the real situation of large-scale power plant boiler has a full range of water treatment equipment, strict rules, comprehensive and complete laboratory projects and instruments, boiler fouling generally does not occur. Boiler fouling generally occurs in the small industrial boilers, it focuses on scaling the case of industrial boilers, industrial boiler fouling situation has the following characteristics: first, the case of large enterprise scale boiler good small and micro enterprises. More formal management of large enterprises, while the initial investment usually have to buy a full range of water treatment equipment, water treatment procedures are relatively robust and effective implementation, operation and maintenance is relatively routine in place, a high level of knowledge of personnel, personnel to follow procedures operating. Boilers generally not fouling, or some boiler scaling a smaller area of ​​thickness or less, because in the past some units do not attach importance to water treatment, causing boiler fouling, and later after changing ideas, to take measures to strengthen the water treatment operation, the scale can well controlled. And general small and micro enterprises, the concept behind weak management, lack of knowledge, poor management, lax supervision and management of the operator, the operator or lack of knowledge can not strictly enforce the rules, poor sense of responsibility, boiler with drugs or salt supply is not in place, not timely, boiler fouling situation is more common, some scale thickness and area of ​​more than TSGG5003-2008 "boiler chemical cleaning rules" requirement, must be carried out chemical cleaning, and even some of the bottom of the boiler vertical boiler shell filled scale, hand hole can not be opened. Second, some units use surface water such as lakes or reservoirs, due to the large surface water turbidity, hardness is small, in the water treatment measures are not quite perfect, small scale inside the boiler or only some debris, dirt, scale relatively good deal, this case has little effect on boiler operation. And some use of groundwater units, because the larger individual areas of underground water hardness, water treatment measures in place, the boiler heating surface heap knot hard scale, a great impact on the hard dirt boiler thermal conductivity. So different sources of water supply boiler, the boiler can also cause fouling situation is different.

Fast household for combi boiler use pump reason why this bid to stand out, not only relying party in a clean boiler industry brand fast, but also in professional and technical personnel of the party fast. After Tianjin coal-fired boiler in the understanding of the transformation plan, our researchers serious investigation and analysis of Tianjin current boiler fuel usage and parameters coefficient, targeted selection of party-type water tube boiler as fast SZS the bidding of competing products . The boiler vertical type double drum "D" type arrangement, full mode waterwall sealed, positive pressure fuel chamber, heat loss is small, compact and reasonable layout, short cycle installation performance advantages, adapt to city gas, natural gas a variety of fuels, fuel combustion in large combustion chamber, a small smoke pollution, the thermal efficiency of more than 95%, reduce the heat loss to a great extent. Meanwhile in the boiler safe operation, such as using a pressure controller, pressure transmitters, water level alarm, low level alarm, safety valve, etc. furnace blast doors multiple security measures to ensure the safe and stable operation of the boiler.