Recently, in Qinghai Province Jigzhi County Market Authority carried out a special inspection of boiler safety within the county, mainly in order to further strengthen the special equipment safety supervision, investigation and potential risks.
County Market Authority was held on June 8 special meeting to make arrangements for this special inspection work; the meeting, Secretary of this special inspections put forward specific requirements: Either the county government and relevant departments in accordance with the superior, all in the area to check boilers, boiler and disabled to look back, to verify the implementation of the rectification; the second is to designate a person to carry out checks to ensure that this special inspection into effect, produce results; the third is to check violations found to be severely dealt with according to law.
Subsequently, according to the spirit of the meeting, Jigzhi County Market Authority Board redoubling its efforts to carry out special inspections. 5 out of law enforcement officers were examined using 10 units. The county has been reported to stop the boiler After registering with and eleven inspection and verification. Focus on checking whether the boiler inspection, whether the registration, check whether safety accessories in place, whether fireman certificates and other issues, focusing on correct pressure boilers, waste heat and pressure tanks and other equipment as well as the use of pressure boiler overpressure operation and other illegal operations behavior, found hidden among all checks for disposal in accordance with law, to ensure the safe operation of the boiler county.
Next, the county will further increase the pressure in the boiler with supervision and do routine inspections and safety management, strengthen the use of units to pay a return visit found the problem of checks put in place to promote the use of the unit responsibility, and earnestly safeguard the life and property Safety.
The low nitrogen oil and gas fired boiler developed by CBM, combines low nitrogen burner with FGR gas recirculation system to realize ultra-low nitrogen emission and full automation operation, which make the emission of nitrogen oxides reduce to below 30mg/m³. It is widely used in central heating, industrial steam and hot water supply, and the international market share is far ahead.
How pressure combined fired water tube hot water boiler the security work in Year 6 at night, is located opposite the old steam boiler certain aquaculture farm town of Rudong Ju Wang Tan explosion cause of the accident is operating a boiler operator improper. Such as shrimp farms in the South East of whitening, the use of the boiler is very extensive, mainly used for farming shrimp shed warming. Before many farms use steam boilers, higher risk, many farms put on a higher level of security pressure hot water boiler. Pressure hot water boiler is no risk, but it does not mean you can neglect of duty fireman. To regularly observe the water level to avoid low water level, the situation appears dry, otherwise there will be a certain risk, but will seriously reduce the life of the boiler using pressure hot water boiler. Boiler operator should note the following: 1, strict implementation of rules and regulations, seriously concerned to learn boiler expertise, and constantly improve the level, to ensure safe and economic operation of the boiler. 2, the pressure hot water boiler in use, organizations and individuals will be allowed to change the structure of the boiler, valves and piping system 3, before the predetermined succession visits to check a variety of devices, comprising: a water tank (hot water tank, expansion tank) , the amount of energy (boiler gas meter), a thermometer (temperature of hot water tank, the boiler water temperature of heat medium) and the like operation, when the shift operation to check the recorded inventory tool, and to learn more about the operation of the boiler. 4, take over staff as required, shift and provisions ahead of time to take over the boiler room to do the preparatory work, and to understand the operation of the boiler. 5, shift work were prepared in advance, be careful and comprehensive inspections and investigations, to keep the boiler running. 6, shift workers should take over personnel issues related to equipment operation, water quality and boiler blowdown, etc., without handing, transfer of personnel shall not leave their jobs. 7, keep the boiler running when the boiler clean, no dirt, no leakage, no rust and corrosion, carefully fill out detailed equipment maintenance records. 8, using the boiler room is one of the vital sectors of the boiler unit, in addition to the boiler room workers, leaders and security, defense, department managers, other unauthorized persons do not access inside. 9, prohibits storage of flammable boiler room and other debris and the like, loaded with a small amount of lubricant required, cleaning the oil drums, oiler, to be stored in designated locations, and pay attention to check whether the explosives combustion. 10, boiler room to be equipped with fire fighting equipment, carefully managed, it should not be moved or used for other purposes. 11, boiler room floors, walls, doors and windows keep clean. 12, competent leadership regularly, irregularly running records, sanitation inspection, identify problems and timely solutions. 13, at the stipulated time to work on time, do well shift recording, not just leave their jobs, leave something. 14, alcohol is strictly prohibited in the boiler room, drowsiness, gambling, fighting once found seriously. After 15, equipment failure and accidents timely reporting (timely reporting on duty the night the person in charge), realistic write a written accident report, to be thoroughly investigated, after clarifying the responsibility, resulting in losses to the accident negligence, be held accountable process.
There are reasons for chemical plant boiler water wall high temperature corrosion which causes of high temperature corrosion chemical plant boiler water wall What are the causes of high temperature corrosion chemical plant boiler water wall which 1, raw coal sulfur compounds according to relevant statistics analysis shows that coal inorganic sulfide occurrence sulfur-based, accounting for 60% to 70% of the total sulfur content, the remaining 30% to 40% is organic sulfur. Occurrence majority of the inorganic sulfur in the form of pyrite, sulfate, only a small fraction of inorganic sulfur content of the sulfur in coal measurement results shown in Table 2. The morphology of pyrite by more slagging and corrosion of boiler serious implications, and therefore subject to people's attention in the course of practice, but often ignore the corrosive effect of sulfate on the Wall. Thus, in practice it is necessary to form during combustion of sulfur in coal is measured. 2, the chemical analysis of coal coal boiler is 50% to 50% of anthracite and bituminous coal, coal testing seen from the data of research institutions, the volatile coal employed in the chemical, crystalline water, CO2 and other non-combustible or higher levels of flame-retardant component, low CH4, H2 and other combustibles content, higher temperature requirements volatile release, slow release, long time to burn coal, high ash content of the combustion, appears likely to cause the waterwall reducing component. 3, the size of the inscribed circle boiler chemical analysis boiler designed to be used with pre-mixed coal, to achieve the purpose of enhancing combustion, therefore the design Tangentially Fired large, will cause a large inscribed circle after the formation of the combustion of coal pulverized coal, gas and other substances appear high temperature corrosion. Related experimental results also shows that, when the circle diameter of the boiler in the range of 8 ~ 8.3m, after leaving a nozzle air flow deflection under the action of mixing the secondary air mixed gas stream is significantly down and floating inscribed circle than the other Big. 4, when the airflow and dual channel burner boiler design analysis consider using bituminous coal and anthracite mixed, the use of a secondary higher wind speed, a wind speed is low, the size of each of 43.5m / s, 22.5m / s, a , the second big difference wind speed caused the jet rigid significantly different. Due to the impact of differences in conditions and the gas stream upstream sides of adjacent angles of qi, when a secondary stream ejected from the burner, the air flow occurs toward the back direction of the flame to the water wall offset time smaller jet velocity Merry occurs a more obvious than the secondary airflow offset such that once the separation between the secondary air flow significantly. By using correlation analysis tests like long streamers understood, a significant portion of the air flow downstream of the boiler walls against movement, so this part of the secondary air flow departing from the airflow direction, coal and other combustible materials in the combustion under insufficient oxygen supply, a certain amount reducing gas component. Because the use of the two-channel burner design, a secondary air flow separation phenomenon of increasing offset, to some extent, when a relatively strong reflux in the boiler, the flue gas, the better the effect of reflux, the more obvious the effect of fuel combustion, but it can also lead to increased attenuation of a romantic reflux stronger. Dual-channel design such that the outlet area of the burner than traditional single channel many large exit area, but also makes the primary air flow greatly reduced exit velocity. The foregoing analysis, and a dual channel design, the secondary air flow speed difference, so that a significantly reduced stiffness airflow, airflow offset serious, prone to high temperature corrosion in the waterwall. Analysis of coal pulverizing system thickness 2.5 coal boiler is based on coal and coal burning coal designed, when using low-quality coal, pulverizing system load increases, reducing the separation effect, resulting in coal particle size increases, the thickness of the pulverized coal has a significant effect on high temperature corrosion of the boiler, coal particles increase when the torch burning in a boiler long prone to decrease the effect of the combustion of pulverized coal, coarse coal particles are not completely combusted powder boiler water wall in the vicinity of the bond, so that high-temperature corrosion intensified.
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