gas pressure switches boilers burners controls
The difference between ordinary and low nitrogen pressure switches boilers burners controls boiler:? With vigorously promote environmental protection department of China's low-nitrogen boiler being applied more and more common. In the eyes of many low nitrogen boiler just meet environmental protection to reduce emissions, but in reality not. The following describes a low nitrogen boiler manufacturers to distinguish the conventional type boiler and low boiler nitrogen for everyone? A difference in emissions due to the different combustion grate firing, combustion chamber, circulating fluidized bed boiler, the furnace of different structure, but also its original NOx emissions when large differences, in general, not specifically for low NOX combustion furnace using technology, circulating fluidized bed original low NOx emissions, NOx raw emission Stoker furnace represented by a chain slightly lower, industrial pulverized coal boiler as burning boiler room, the higher the NOx emissions original, well-known domestic boilers have low nitrogen emissions is greatly reduced. Second, different boiler technology, layer combustion, combustion chamber, circulating fluidized bed boiler may be different with different low NOx combustion technique in accordance with the combustion mode, the combustion boiler for the air distribution layers using an air classifier, and more often to achieve low flue gas recirculation nitrogen combustion; under the influence of a typical flue gas recirculation combustion boiler combustion zone layer, in conjunction with the air fractionation techniques for reducing NOx by catalytic char; super reduction furnace denitration technology in recent years, new furnace denitration techniques, by position reasonable combustion flame spray region ammonia, direct denitration at a high temperature flame. Low Nitrogen mainly the secondary air boiler, the coal to the location and distribution of optimal adjustment of the mouth, or the like to increase the flue gas recirculation system. Third, different security, the center layer after combustion, combustion chamber, low-NOx combustion furnace circulating fluidized bed boiler technology a large number of tests performed, it has been verified in engineering applications, in general, a low nitrogen boiler, security to be higher, the reason for its sales in recent years more and more, there are many users because of its high security, a threat to the space environment small purchase, which is one of its important differences with ordinary boilers.
In accordance with article 1.2 13.3.6 to 13.3.8 "pressure switches boilers burners controls design specifications" (GB50041-92): gas-fired boiler provided in the other buildings should be not less than 3 times the amount of ventilation, ventilation hour It does not include the amount of combustion air volume. Dangerous operating room and the like between the gas regulator, the amount of ventilation per hour, should be less than 3 times, when not meet the requirements natural ventilation, mechanical ventilation should be provided, and should be less than 8 air changes per hour accident ventilation times. Fuel pump and reservoir 45 ℃ flash point less than the underground tank of combustible oil, except that natural ventilation, the fuel pump mechanical ventilation 10 air changes per hour should times, six times per hour ventilation should depot mechanical ventilation. The above three are in each room in order to ensure exclusion of air and flammable hydrocarbon disposed a predetermined minimum ventilation rate.
Jingzhou City, Hubei is located in Jianli County Supervisor Bureau for a food processing plant emergency inspection and maintenance, the timely processing of the security risks of the pressure switches boilers burners controls. At the meeting held later, the city supervisor Bureau emphasized the specific guidance boiler safety management.
Industrial pressure switches boilers burners controlss and control systems of foreign countries: (1) is designed to not only focus on boiler heating systems also pay attention to both attach importance to the development and integration of hardware, pay more attention to the boiler control model and control software research and development; (2) pay attention to the reliability of the control device , economy, such as small oil, gas boiler still use many relays, contactors logic control; (3) control the boiler operation is fully automated, requires less or no operator; (4) larger capacity boiler widespread installation of combustion optimization system based on an online industrial control computer; (5) the use of group control technology while controlling put into operation and out of multiple boiler according to the actual load; the use of (6) information technology continues to improve, medium and small boilers can be transmitted via the mobile Internet managers to operate the boiler boiler operating conditions, overload alarm and other critical information, and to accept operator performs the operation command, the boiler operating data may also be connected to the building automation system via a local area network, the Internet ( BA), the wisdom of the factory system to go; (7) Internet-based remote monitoring system boiler was Development and application. Compared with the boiler control technology and equipment abroad, mainly in the following gaps: ① slow combustion control technology, especially coal-fired boiler combustion control technology development; compared to the presence of on-line monitoring and sensor technology for combustion control developed ② large boiler the gap; the presence of reliability and developed sensor ③ boiler combustion control, actuators and control equipment compared to a big gap; ④ light weight hardware-oriented software for boiler control there is the negative impact of technological development; ⑤ remote operation and control, monitoring system still in its infancy, there is a large distance away from the application; ⑥ majority control equipment still in operation control based on boiler safety level, based on a handful of boiler control equipment taking into account the number of energy-saving, environmental protection and performance of the system control. 3 standardized "Twelfth Five-Year" period, the standardization of industrial boilers has made considerable progress to revise the "Boiler Safety Technology Supervision" of TSGG0001 and TSGG0002 formulate "energy-saving boiler technology Supervision" as the starting point, through the development of core boiler product standard GB / T16507-2013 "water-tube boilers", GB / T16508-2013 "shell boilers", on the basis of gradually straighten out the boiler standards with international standards and further amendments, including one after another on the GB / T10180 "industrial boilers thermal performance testing procedures "and other issues involving the boiler and related components, ancillary equipment design, manufacture, use and inspection of industry regulations and standards 62 (six of which industry technical regulations, national standards and industry standards 30 26, see Appendix H) and universal implementation, technical specifications and standards revised on the basis of implementing the security, the energy requirements of the market fully reflects the principles and spirit of the WTO, which greatly helps regulate and improve the overall technological level of industrial technology and competitiveness of the industry.