DG Type Multistage Boiler Feed Pump

Prevention of industrial dg type multistage boiler feed pumps produce condensate hazardous industrial boilers which produce condensed water hazard control measures which 1, bold and hydrophobic visible drainage pipe in the boiler inspection process and found that the condensate is not easy to accumulate in the water-tube boiler, while the horizontal boiler shell boiler drain more, but part of the boiler there is still a large amount of condensate (most of which are newly installed and running). The analysis revealed that, due to the large side of the boiler combustion space, even drainage arrangement, large diameter, tube bundle boiler convective condensation water formed can be discharged. Small smoke tube boiler combustion space levels, due to the structure until the drain can only be arranged at the bottom tube sheet boiler and after the drain of less than 30 mm in diameter, and designed to prevent leakage of boiler flue gas, directly connected to the drain pipe drainage pipes. In operation, the contents of the boiler easy to plug welding slag, rust particles. 2, to adjust the position of the economizer due to the large volume of the boiler, economizer boiler mostly installed in a horizontal tail position, while some horizontal boiler economizer housing is mounted directly or obliquely above the boiler flue outlet, the boiler the lowest point of the flue gas flow. Although the drain pipe installed at the bottom of the economizer, but due to gravity, most of the condenser, condenser and condenser will be returned to the boiler flue. During operation, condensed water after a long period of rinsing, immersed in a heating boiler section. Due to the different materials and material economizer boiler, economizer 09CrCuSb, designed using a material having a strong corrosion resistance, and without considering the design of boiler condensate corrosion conditions, 20g materials, poor corrosion resistance, easily corroded. 3, appropriately increasing the return water temperature in the boiler load or the energy efficiency of the testing process in industrial boilers, most of the boiler has a low load operation. Operated at the design load, the exhaust gas temperature before entering the boiler flue gas economizer is higher than the dew point, in the low load operation, the exhaust gas temperature of the boiler flue gas is lower than the dew point, so in the case of satisfying the condition, as far as possible should be boiler work in the vicinity of the design load, or take action. Measures could be taken to improve the return water temperature of the hot water boiler. For example, in the secondary heating system network, a network should decrease the flow, to increase the temperature of the primary water supply and return pipe network. Thereby raising the temperature of the flue gas leaving the boiler heating surface of the body, to avoid condensation of water vapor in the heating surface of the boiler body. 4, the depth of the condensed water recovered by previously described, the industrial gas boiler condensate is quite large, which is part of the condensed water is not effectively contain some depth using heat, in order to take effective measures to recover heat and water. For example, we may be adjusted by adding an alkaline agent (ammonia, cyclohexane, etc.) pH value of the condensate, which is then pumped into the heating system, which not only saves water, and heat is recovered.

A: the adaptability of the gas sources 1: Natural gas must depressurization gas regulator and gas regulator, the pressure before the Burner selected to meet the requirements before entering the burner, in order to work properly. 2: automatic adjustment operation of the dg type multistage boiler feed pump performance requirements: since a large gas consumption of the gas boiler, gas boiler as possible in order to reduce impact (sudden pressure regulator after the gas lift system during starting or stopping, sags ), controlling the gas boiler during operation must meet the following requirements: start (1) gas boiler must be adjusted to start at the minimum load of 30% (the rated load); (2) a gas boiler must be gradually reduced before shutdown load, rated load to be reduced before shutdown when the valve closes the solenoid 30%; (3) boilers can be automatically adjusted according to the boiler heat load during normal operation of the actual output stage operating conditions, automatically increasing demand for large Great demand hours automatically reduced, self-sustained heat balance of supply and demand, greatly reducing the number of start and stop the boiler; when reduced to 30% or less of the rated load, heat production is still greater than the output of the boiler, before proceeding down. (According to relevant statistics, the explosion occurred in the gas boiler start-up and shutdown of these two periods that occurred during ignition and fire in., A small gas boiler gas explosion has occurred 2/3 during ignition) (4) is provided above the automatic adjustment function is particularly important when a voltage regulator with many boilers, the boiler can start to avoid pressure fluctuations caused by stopping overpressure safety device or system boiler gas low-voltage protection action, the normal operation of the boiler shutdown. Two: for gas safety, gas boilers must have security facility 1: ignition control system for a gas boiler before ignition, purge the furnace and flue must be carefully excluded combustible gas furnace may be accumulated. A reasonable ignition process control systems to cope with the ignition process is automatically controlled fan only after the completion of furnace cleaning tasks to perform ignition; only when the ignition flame has been established (confirmed by a flame detector), and after a predetermined time has elapsed, a control valve main burner to open; ignition flame is automatically extinguished after a predetermined period of time; when the main flame could not be ignited within a predetermined period of time, the main burner can be automatically and quickly turn off the ignition flame is extinguished while gas boiler ignition procedures are generally monitored and controlled by a program controller. Control of the ignition process, the ignition before the total ventilation should be not less than 3 times the total volume from the furnace to the chimney population. 2: Safety Devices gas boiler is run prevent excessive wind load caused by a low flame, combustion automatic adjustment device should be installed on each boiler, intake air volume and gas supply gas boiler control linkage.

20 tph SZL series biomass fired dg type multistage boiler feed pump project for rubber industryA steam boiler is an important equipment in rubber industry, proving adequate steam support for multiple production processes including drying, profiling and vulcanizing. Jiangsu General Science Technology Co., Ltd. is a modern high-tech enterprise specializing in R&D, production and sales of tires, which is a subsidiary of Hongdou Group. It is one of the leading companies in China's all-steel heavy-duty tire market.In the context of global economic integration, Jiangsu General Science Technology Co., Ltd. built a new production base in Thailand in January 2019. The performance of the steam boiler has an direct impact on the quality of the complete production line. After the multiple comparisons and investigations, General Science chose to cooperate with ZOZEN. According to the actual working conditions of the Thai production base, ZOZEN recommended the SZL series biomass steam boiler. This new type of biomass-fired boiler has the advantages of compact structure, safety and efficiency, and sufficient output. According to the characteristics of the fuel, the ZOZEN technicians rationally optimize the design of the feeding hopper, the width and length of the grate; the large furnace volume reduces the heat load and prevents the occurrence of coking in the furnace. Meanwhile, the boiler adopts a light chain grate, and segmented wind bunkers and wind regulating devices are arranged in the lower part of the grate to meet the air volume required for the fuel in different combustion stages, which achieve precise air distribution to ensure full combustion of fuel, so that the thermal efficiency can reach over 88%, and all indicators have reached the international advanced level.

In mid-March this year, Shenyang City, the first dg type multistage boiler feed pump industry issued emission permits. Plan will livestock poultry, dairy products manufacturing, automobile manufacturing and other industries 29 issued emission permits, issued by the maturity shall not sewage, sewage behavior of errant card companies to investigate and punish. This is also the industry's first Shenyang boiler emission permits.

According to the State Department "to control emissions permit system implementation plan" and the Ministry of Environment "discharge permit management approach", 2017 in Shenyang City has completed thermal power, paper, cement, electroplating, pharmaceutical, pesticide, textile printing and dyeing industry, 54 enterprises license issuance of work. 2018, the city completed the issuance of emission permits 128, including iron and steel industry 5, slaughtering and meat processing industry 106, 16 water treatment industry, ceramic industry one, according to industry certification and time-bound national requirements, so that " should be sent to do hair. "

This year, Shenyang City, according to "stationary sources of pollution permits Classification Catalog" requirement, will be livestock poultry, dairy products, Condiments fermentation products manufacturing, food manufacturing other convenience food, wine manufacturing, footwear, plywood manufacturing, bamboo and rattan wood furniture manufacturing, polyvinyl chloride, phosphate fertilizer, automobile manufacturing, battery manufacturing, non-metallic waste and scrap metal processing, garbage to hazardous waste sludge as fuel for thermal power generation, sewage treatment and recycling, environmental control industry , heat production and supply, electroplating facilities, sewage centralized treatment of industrial waste water and other 29 industries issuance of emission permits. Up to now, has been launched boilers, water treatment, ceramics, automobile manufacturing, battery manufacturing, phosphate fertilizer industry and electroplating processes work permits issued.

Shenyang Ecological Environment Agency, responsible person, emission permits to take "a card-style" management, so that all the laws and regulations of the environmental requirements of an enterprise integration to a convergence of the proposed permit up to implement the main responsibility for polluters. A company issuing a discharge permit, enterprises through the establishment of self-commitment, self-monitoring, accounting records and regular reporting system has proven its emissions by law, to further strengthen fine management.

Shenyang in the discharge permit issued during the EIA procedure will be incomplete, excessive emissions, there is the issue of corporate environmental management ordered rectification to achieve "issued an industry, to clean up an industry, an industry specification, an industry discharge standards." In the future, Shenyang will be implemented in accordance with the regulatory card issuing companies to carry out law enforcement inspection post card, after intensive license management, enterprise undocumented sewage discharge permits and do not follow the behavior will be investigated according to law.

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