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        Your position:Home > Products > Heat Source

        Double-section Coal Gasifier

        Feed granularity: ≤50mm      

        Applications: it is applied to production industries such as metallurgy, drying, chemistry, building materials, refractory materials and fertilizer.  

        Materials: non-caked and weak bonding bitumite and anthracite
        Product introduction: high thermal value; less coal consumption; convenient to operate; friendly to environment; large amount of by-product tar produced; good quality of tar;

        Sales Hotline:

        0086-18539990967

        Technical introduction

        Structure:
        Coal adding section: coal position detector is installed in this section; automatic coal adding is realized by cooperation of coal position detector and stoker; full stock operation is guaranteed;
        Distillation section: liner in furnace; this structure is designed after precise heat transfer and heat exchange calculation. Heat transfer efficiency is improved, which makes coal used for gasifier dried and distilled fully and effectively. Then, volatile fraction is separated out, which will improve the thermal value of coal gas and benefit the gasifying of coal gas at lower section.
        Gasification stage: adopt water jacket structure; steam produced by itself for gasification at furnace bottom;
        Coal feeding mechanism: Adopt advanced upper cylinder to add coal mechanism under bell cover; easy operation; simple maintenance; good air tightness;
        Ash cleaning mechanism: adopt ratchet pawl and hydraulic drive to remove ash at two sides; big ash knife is designed with self-designed plough ash removing knife; reliable and stable transmission; smooth ash removal; plough ash removing knife developed by our company has been applied to many gasifiers at home and abroad. It enjoys good reputations among its users. 

        Advantages

        Coal gasifier is divided into two kinds, single-stage and double-stage. Double-stage coal gasifier can also be called two-stage coal gasifier. Furnace body of double-stage coal gasifier can be divided into two parts, upper part and lower part. Raw materials are sent to upper part of coal gasifier by bucket elevator and the materials are distilled. Then, semi-coke is formed. The whole process for coal gas production is finished in coal gasifier. Coal gasifier is specially designed for gasifying bitumite. It has many advantages of high thermal value, environmental protection, large amount of by-product tar and good quality of jar. The coal gasifier developed by our company is characterized by good heat transfer effect, complete distillation, easy structure and convenient maintenance.
        Advantages of double-stage coal gasifier:
        1. Less pollution: coal gas at lower section is got from coke after pneumatolysis and distillation. There is almost no jar contained in coal gas, which makes coal gas at lower sections of coal gasifier cooled down after extreme cold. Large amount of sewage caused by direct contact between water and coal gas is avoided. Then, sewage discharge will be avoided and no pollution is caused to environment. Because quench water system is deficient in water, there is no sewage discharged out. Water recycling use can be improved by settlement treatment. It is easy to dispose.
        2. Gasification intensity and comprehensive efficiency are higher than single-stage coal gasifier; can adapt to various coals, especially bitumite. Closed circuit is adopted for coal production in coal gas station. No sewage and air pollution is caused to environment. It saves a lot of water resources. With advantage of environmental protection, it holds much less running cost.
        3. Owing to a distillation section added in double-stage coal gasifier, coal is heated gradually in distillation part and distilled with low temperature. All tar produced will not be decomposed. The stickiness of tar is low and with good fluidity.
        4. Tar produced in upper coal gasifier is mainly light tar; less dust brought out; coal gas is purified by electric light and electric catching focal treatment. 
         

        Working principle

        Process flow of double-stage thermal desorption gas station:
        Upper coal gas enters into electric filter whose working temperature is from 100 to 150 degree centigrade. After being polarized, tar mist and dust in the gas come together into a polar tube war and flow to tar tank. After passing through ash bucket, big granular dust will enter cyclone dust collector for being centrifugal dedusting. The temperature of dedust coal gas is from 500 to 600 degree centigrade. After mixing, coal gas at lower part and upper part will enter heat furnace through conveying pipe.
        Process flow chart of two stage gas producer thermal desorption gas:
        Double-section coal gasifier
        Process flow of cold coal gas station of double-stage coal gasifier:
        The coal gas in double-stage can be divided into two kinds, upper gas and lower gas. Upper coal gas enters I grade electric tar precipitator first to eliminate heavy tar and dust. Working temperature is from 90 to 150 degree centigrade. Then, coal gas enter indirect cooler where the temperature of coal gas is cooled to about 35 to 45 degree centigrade. After passing through cyclone dust collector, the temperature of lower coal gas is about 450 to 550 degree centigrade. Then, lower coal gas enters preheat heat ex changer. Gas is recycled while cooling down the gas. The temperature of coal gas is cooled to about 200 to 230 degree centigrade. Then, coal gas enters into air cooling device where the temperature of coal gas drops to about 65 to 80 degree centigrade. Through indirect cooler, the temperature of circulating water drops to about 35 to 45 degree centigrade. After being indirectly cooled, upper coal gas and lower coal gas will enter to secondary electric catcher for further deoiling and dedusting through deoiler. After being cooled and purified, coal gas will be compressed by pressure device. Finally, coal gas will be conveyed and used through coal gas pipes. 
        Process flow chart of double-section coal gasifier:
        Double-section coal gasifier

        Technical parameters

        model
         parameters
        2.0 2.4 2.6 3.0 3.2 3.6
        mm
        Diameter of furnace
        2000 2400 2600 3000 3200 3600
        mm
        Size of fuel
        13-25、25-50
        kg/h
        Fuel consumption
        800-920 1200-1400 1400-1600 2000-2100 2100-2500 2500-3500
        m³/h
        Coal gas output
        2500-3000 3600-4200 4200-5200 6000-6500 6500-8000 8000-11000
        KJ/ m³
        Thermal value of coal
        Upper
        Part  
        7100-7500 7100-7500 7100-7500 7100-7500 7100-7500 7100-7500
        Lower part 5016-5643 5016-5643 5016-5643 5016-5643 5016-5643 5016-5643
        Mixing 6186-6690 6186-6690 6186-6690 6186-6690 6186-6690 6186-6690

        Outlet temperature of coal gas
        Upper part 100-150 100-150 100-150 100-150 100-150 100-150
        Lower part 500-600 500-600 500-600 500-600 500-600 500-600
        outlet pressure:K Pa Upper part <1
        Lower part <1.5
        K pa
        Air pressure of furnace bottom
        5-6

        Saturation temperature
        50-65
        K pa
        Steam pressure of water jacket
        98/294
        Kg/h
        Steam output of water jacket
        300 400 450 500 550 650
        r/h
        Rotary speed of ash basin
        2.97 2.3 1.7 1.5 1.5 1.5
        KW
        Transmission power of ash basin
        3.0 4 5.5 5.5 5.5 7.5
        KW
        Power of hydraulic station
        2.2
        K pa
        Gland steam pressure of fire detector
        98/294
        Fuels available Non adhesive and weakly bonded bitumite and anthracite; the quality of coal should conform with GB/9143.
        mm
        Diameter of coal gas outlet
        Upper part DN250 DN300 DN300 DN400 DN400 DN600
        Lower part 400x400 766x766 766x766 866x866 866x866 1000x1000
        Diameter of blast pipe at  furnace bottom DN250 DN300 DN300 DN400 DN400 DN600
        KW
        Total power
        40 55 70 100 150 190
        Slag discharge form Wet type, automatically discharge slag;  
         

        Relevant cases

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        Sludge Reclamation

        Matching Device

        Sales hotline:0086-18539990967

        Address of headquarters:NO. 198, longding industrial zone, high-tech development zone, zhengzhou city, china

        Email:vip@tdaxy.com

        Zhengzhou Taida Group    Address:NO. 198,longding industrial zone,high-tech development zone,zhengzhou city,china    Sitemap

        真人做爰直播 在线看
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