A fully learn the advanced thinking of the industry in the boiler electric heating tube industry, foreign coal to electricity than domestic boiler industry earlier, thinking of its research and development is also relatively more advanced, domestic coal to electricity boiler if you want rapid development need to learn foreign advanced technology to do the work, modern good quality coal to electric boiler manufacturers usually have a good idea of learning foreign advanced to ensure that their own businesses with sufficient vigor. Second, the ability of independent research and development of a strong learning foreign technology does not mean mere imitation, on the contrary, we want to develop their own technology on the basis of learning, which the domestic coal to electric boiler company's R & D capabilities have certain requirements, we must also choose the time and strong R & D capability to select those companies, so we consider coal to power boilers which brand is good R & D capabilities need to be taken into account. Third, good at using experiments to improve their technique and quality of coal to electricity using a boiler process is needed is a process of exploration, in order to get good equipment and technology, the full test is necessary, and excellent coal to electric boilers for experimental research and development companies generally do this one are relatively good, their technology in order to get the most adequate and effective quality improvement, we need to make the appropriate test work.
Classification and selection fuel gas boiler electric heating tube thermal control system: a fuel gas heat boiler control system classification (1) a combination of an electric system for an electric meter instrumentation system consists of relays, time relays, the relay program composed of program control and interlock system; or by the electronic control and intelligent digital series instrument, measuring instruments display, sound and light alarm monitoring instrumentation and control system and other components. Electric instrumentation system design experience mature, the price is cheap, but it is difficult to achieve system redundancy, remote data transmission, maintenance is more difficult, more difficult to implement advanced control methods. Electric meter system is mainly used for small boilers, but the electronic control Applications for closed-loop regulation of decreasing almost been replaced by intelligent multi-function instrument, the following sections mentioned electronic control just want to take advantage of familiar industry and series instrument combination that's widely used to illustrate the principle of regulating system and constitution. (2) programmable control system programmable control system is the core of programmable logic controller (PLC). Programmable logic controllers are widely used in the initial control, since the 1990s has increased the ability of process control, the programmable logic controller in the field of process control applications more widely. Programmable controllers typically use a modular structure having a self-diagnostic and communication capabilities, can completely replace the relays, time relays, and a relay circuit for the logical functions. In a continuous control, input analog may be, for performing mathematical operations, it is easy to implement advanced control functions electric instrument system difficult to achieve. (3) The microcomputer control system: This system is Direct Digital Control (DDC) system, which is the core of the microcomputer. Figure 7-1 is a block diagram of a microcomputer controlled system. Microcomputer automatic control system can show you all of the parameters of boiler operation, and dynamic display of important parameters and alarm recording boiler operating conditions, the storage boiler operation, timing and instant print reports. The microcomputer-controlled powerful computing system, may be implemented to optimize the combustion control and other advanced control can also be linked into a network, to realize long-distance data transmission. The microcomputer disadvantage automatic control system reliability is somewhat less, still generally indicate and configure the necessary backup manually-operated unit. But with enhanced anti-jamming performance of industrial microcomputer (IPC), the reliability of microcomputer automatic control system will continue to improve. (4) Distributed Control System (DCS), also known as Distributed Control System distributed computer control system, the production process is centralized monitoring using computer technology, communication technology and redundancy, operation, management and decentralized data acquisition and control of a new types of control technology. Distributed control system is powerful, high reliability, generally used for large boilers and boiler group control. Over the years, DCS vendors in order to meet market demand, the introduction of small flexible mixing process for a variety of applications and devices open control system integration control, more suitable for medium-sized boiler DCS, such as HONEYWELL company's S9000 systems.
March 11, we learned from the Harbin municipal government: Harbin win the 2019 New Blue Sky Battle embodiments released this year, Harbin will be coal-fired pollution control, pollution discharge standards, high Vehicle emission control, comprehensive improvement of urban and rural non-point source, and prohibiting straw utilization as the main direction, precise Shi policy. Strive to the end, so that the sulfur dioxide, nitrogen oxide emissions are reduced by more than 17.6% in 2015 and 20%; concentration of PM2.5 decreased to 52 micrograms / cubic meter or so, and strive to 50 micrograms / cubic meter or less; and more severe reduce the number of pollution days to 21 days or less.
After the proposed scheme, Harbin bulk coal strengthen management and control, strengthening coal quality testing, to improve the sampling frequency. This year will develop clean heating embodiment, the priority development of the city urban central heating; central heating covered areas being difficult to accelerate the implementation of natural gas heating and electric heating, and other distributed clean heating. Unit embodiment "coal to clean energy" should be synchronized removal of coal-fired boiler, gas boiler need replacement after low NOx combustion technology, clean heating rate of 60% or more. City buses, taxis or car clean energy proportion of new energy and strive to reach 94% and 80%. Promote the use of gas vehicles to achieve the national emission standards for six. Six to stop selling below the country's gasoline and diesel. Establish responsibility dust control system, built-up areas prohibit the construction site mixing of concrete, mortar and use of bagged cement 9 city and county (city). Under the premise of protecting people's livelihood, heating boilers should be relatively conducive weather conditions during the pollutant dispersion from the oven, in the same area by different heating boiler early in the evening three periods of peak load shifting from the furnace.
What kind of fuel steam boiler electric heating tube with a cost-effective: steam boilers for industrial production of stable and high-quality delivery of steam, wide range of applications. Depending on the fuel, coal-fired boilers can be divided, biomass boilers, gas-fired, oil-fired boiler and an electric boiler.
[email protected]
