high efficiency steam boiler for pharmaceutical industry

2019, Shaanxi Province, continue to increase efforts to control and eliminate coal-fired facilities, recently issued a "coal for management action plan Guanzhong area", planned before the end of 2019, the completion of the Guanzhong area of ​​all 35 tons of steam coal-fired boilers (more than 20 tons of steam and the transformation has been completed with the exception of ultra-low emission) demolition of all or implementation of clean energy transformation. In accordance with the principle of gas will change, the implementation of clean coal prior to transformation Area off central heating station.

1, to promote the efficient and economical coal to electricity. Cities, counties, the district government to connect with the local power grid companies to develop the Rebuilding embodiment, each village and household investigation and electricity facilities, good co-ordination transformers, distribution lines, smart meters and other distribution facilities renovation work, comprehensively promote the upgrading of rural power grids to meet people's demand for electricity for heating. The end of December 2019, Guanzhong Plain, basically should be changed to make change, the mountains and strive to complete the transformation of the whole village contiguous 60%, the rest of the region before the end of 2020 to complete the transformation. It has completed the transformation to strengthen regional security and stability of power supply and electric heating facility security management. Encourage public bodies to give priority to use high efficiency air source heat pump, storage electric heating and other products.

2, and steadily push forward coal to gas. Gas will adhere to the reform, on the basis of strict implementation of the contract on the amount of resources, natural gas pipe network coverage area of ​​priority implementation of coal to gas. Accelerate the construction of infrastructure such as natural gas pipeline network, expanding coverage of natural gas. In accordance with the principle of special matter, to speed up the preparatory work for the pipe network, gas station facility construction land, planning permission and so on, to simplify examination and approval procedures, to speed up the examination and approval, and actively support the gas company to promote the project implementation plan. Encourage and support the network does not cover the better the basic conditions of township (town, street) using a skid mounted LNG and compressed natural gas. An annual increase of gas from coal to gas priority for rural residents and incorporated into the contract management to ensure stable gas heating. To ensure energy conservation, the indoor installed gas boiler energy efficiency of not less than level 2. According to Mopai base number, speed up the development of sub-annual indeed given village households from coal to gas embodiment, reasonably determine the 2019, 2020 annual scale coal to gas.

3, increase geothermal and other renewable energy heating efforts. Geothermal resources better urban plains of Xi'an, Xianyang City and other urban and rural interface, focusing on rural construction area of ​​more than 20,000 square meters of new residential, with technical and economic feasibility of using geothermal heating premise should be encouraged to have the condition the old district were geothermal heating transformation. Urban construction must be carried out as a heat source point in principle new waste incineration plant. Encourage and support the strength of the research institutes and enterprises to strengthen the solar thermal, biomass energy technology research and development, improve systems integration. Township (town, street) party and government institutions, enterprises and railways, roads and other auxiliary services take the lead in building a number of sites for renewable energy heating demonstration projects.

4, to promote the use of clean coal. Will not have the clean energy alternative conditions and mountainous areas will not have the coal to electricity, coal to gas to actively promote clean coal. In accordance with reasonable layout, standardized management requirements, improve the construction of clean coal distribution centers, to achieve full coverage of clean coal. Distribution center to establish and improve coal quality inspection and sales ledger system, in line with the sales of clean coal, "coal quality coal for civilian goods" (GB34169-2017) and "civil coal coal quality goods" (GB34170-2017) technical requirements, city , loose coal and coal county built-up areas and its surrounding area used to reach No. 1 product technical requirements, other areas prohibit the sale, use more than 1% sulfur, ash content higher than 16% of civil bulk coal, the information contained the bulk coal management online platform, to achieve dynamic monitoring information. Strengthen commercial coal sales, circulation of coal quality control, increase sampling efforts to achieve full coverage of monthly sampling to crack down on the use of inferior coal for sales behavior. Study and perfect the counties (cities, districts) financial subsidies to support clean coal policy, and actively promote the use of clean coal, to ensure that people warm winter.

5, continue to carry out comprehensive improvement of coal-fired boilers. Increase the small coal-fired boilers and furnaces tea, operating the stove, grain storage and drying equipment and other efforts to eliminate coal-fired facilities. Before the end of 2019, the Guanzhong area of ​​all 35 tons of steam coal-fired boilers (20 tons of steam and above with the exception of ultra-low emission renovation has been completed) all removed or implementation of clean energy transformation. In accordance with the principle of gas will change, the implementation of clean coal prior to transformation Area off central heating station.

Hazardous industrial boiler scale industrial boilers which produce harmful industrial boiler scale which harm scale which temperature heating surface (1) endanger safe operation of the boiler, shorten the life of the boiler water temperature is generally higher than the furnace 6 ~ about 10 ℃, but the presence of scale, leading to sharp increase in the temperature of the heating surface, will creep to overheating, increased corrosion of high temperature oxidation processes may cause metal deformation, bulge, or even rupture blasting; fouling layer of acidic or alkaline substances, it is easy to corrosion of metal equipment and shorten its life, seriously affecting the safe and stable operation of the boiler. (2) reducing the thermal efficiency, increased fuel consumption due to the thermal conductivity of only a few one-tenth scale steel, boiler heating surface scum resulting in reduced thermal efficiency, resulting in increased fuel usage. The data show that, when a surface junction raw 1mm scale, a 10% increase in fuel consumption; when the scale thickness of 3mm, about 25% increase in fuel consumption. Increased fuel consumption, will increase air pollution, which is the current energy conservation is contrary. (3) increased maintenance costs, environmental pollution if the boiler frequently produce large scale, in order to ensure its safe and stable operation of cost-effective, it would need to take timely and effective measures to deal with, or mechanical descaling, or chemical cleaning, a lot of manpower and resources will increase loss, produce a variety of charges. In particular, chemical cleaning, will produce a large basic or acidic wastewater, improper handling will cause serious environmental pollution.

Condensate recovery boiler of Embodiment 1, how the recovery boiler steam condensate recovery system recovering exhaust system high-temperature condensed water, the condensed water can maximize the use of heat, water conservation, fuel economy. Condensate recovery system can be divided into open and closed recovery system recovery system. Recovery system is open to a condensate recovery tank to the boiler, the condensed water recovery and utilization in the process, one end of the recovery pipe is open to the atmosphere, i.e., the condensed water collection tank is open to the atmosphere. When the lower pressure of the condensed water, can not be reached by the pressure from recycling properties, high temperature condensed water pump pressure-feeding. The advantage of this system is that the device is simple, easy to operate, a small initial investment; however, a large area of ​​the system, resulting in low economic efficiency, larger environmental pollution, and since the condensed water is directly in contact with the atmosphere, dissolved oxygen concentration in the condensed water improved, easy to produce equipment corrosion. This system is suitable for small vapor supply systems, a small amount of condensate, small amounts of secondary steam system. When using this system should minimize emissions of secondary steam. Condensate recovery system is a closed tank and all piping are set at constant pressure, the system is closed. Condensate system has most of the energy recovery through a certain recovery device directly to the boiler, the condensed water recovery temperature loss in the cooling portion of the pipe network only, since closed, quality assurance, the water reduces the cost of recovery into the boiler . The advantage is economic good condensate recovery, long working life of the equipment, but the system is relatively large initial investment, operation inconvenient. 2. Select recovery methods for different condensate reconstruction project, which way the recovery and recycling equipment selection, is whether the project can achieve the purpose of investment crucial step. First, we must accurately grasp the condensed water condensate recovery system, if the condensed water is not calculated correctly, will make the condensate pipe diameter selected too large or too small. Second, to properly control the pressure and temperature of the condensed water, which embodiment uses the recovery system, which device, how to arrange the pipe network, the condensate temperature and pressure are related. Third, the trap condensate recovery system is selected to be noted that the content, wrong trap selection, will affect the pressure and temperature at which condensation water use, also affect the normal operation of the recovery system. Recovery efficiency is not as high as possible in the system selection, but also consider economic issues, that is considered waste heat utilization efficiency, we must also consider the initial investment. Due to the high efficiency of closed recovery system, less environmental pollution, are often preferred.

Industrial plant boiler cleaning method which: industrial plant boiler cleaning method What? For industrial boiler plant, the run for some time are to work descaling, if not timely cleaning, for normal operation of the industrial boilers, will have a great impact. Clear boiler scale methods, mainly mechanical descaling and chemical descaling two kinds. Mechanical descaling by the people directly into the drum, spatula or heating surface cleaner to remove scale. However, this method is labor intensive, easily damaged heat transfer surface roughness increases heat transfer surface, not completely clear, it has been rarely used. Chemical cleaning commonly used cleaning and corrosion hydrochloric acid two alkali cooking method, cleaning method which should be taken according to the kind of fouling layer. Alkali cooking method is run in the soda furnace (of Na2CO3), caustic soda (NaOH), or trisodium phosphate, longer times boiling out at normal operating pressure.

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