Coal gasification parameters of space furnace

technical characteristics of pulverized coal gasification plant: dry pulverized coal feed: 2 2 2 ~ 9,99,9 micron pulverized coal particle inert gas transport: nitrogen or carbon dioxide high-pressure gasifier: 2.2.2. ~ 4. mpaa 4. mpaa 4. mpaa 4. mpaa Advantages: 1. High gasification efficiency of dry pulverized coal feed; strictly control the water content of feed pulverized coal. Compared with the wet method, 1Kg1Kg1Kg1Kg coal water slurry can reduce evaporation of .35Kg.35Kg.35Kg.35Kg water, save energy of ~ ～26KJ26KJ26KJ26KJ, and convert standard coal into .113kg .113kg .113kg (5,5kcal/kg 5,5kcal/kg 5,5kcal). Compared with coal-water slurry gasification, pulverized coal gasification improves the efficiency of cold gas by 1111%, and reduces the oxygen consumption by 15 15 15 15 ~ 25 25 25 25%. The output of effective gas increased by 66.66%. 3. The advanced and mature dense-phase conveying technology for dry pulverized coal has a suspension speed of 7,777 ~ 1m/s1m/s1m/s, a solid-gas ratio of 48kg/m348kg/m348kg/m3, and a small carrier gas. 3. Intensified combustion improves the gas production rate per unit volume, and the gasification intensity is high. Under the same production capacity, compared with the atmospheric furnace, the equipment size is the smallest, the structure is compact, the floor space is small, and the combustion efficiency is improved. Allowable operating temperature of gasifier chamber: 14 14 14 14 ~ 191919℃ Advantages: 1. Wide adaptability range of coal, wide optional range of ash melting point of coal (125 125 125 125 ~ 165165165165℃), and wide optional range of gasification raw materials; The carbon conversion rate is high, and the quality of crude syngas is good. The design value of low-carbon conversion rate of CH4 CH4 content is ≥99.5%99.5%99.5%99.5%, and the volume of effective gas (CO+H2) (CO+H2) (CO+H2) at the outlet of syngas is ≥ 9% 9% 9%. 3. Increasing the reaction rate can shorten the reaction residence time and increase the reaction rate at high temperature and high pressure. Compared with coal water slurry gasification process, it is easier to reach equilibrium. Average residence time in the furnace is 1s, 1s, 1s, 1s. 4. Dry pulverized coal is combusted with pure oxygen, and the flame center temperature is increased. The flame center temperature of short burner is 18181818 ~ 215215215℃. Advantages of combined burner with single burner and top combustion: 1. Combustion flame, material flow field in the furnace and furnace structure are in good agreement, and the pulverized coal pyrolysis zone, flame combustion zone, flue gas jet zone, flue gas reflux zone and secondary reaction zone in the furnace are reasonably distributed. The reaction residence time meets the gasification requirements. 1. Combustion load adjustment range. Large load adjustment range: 6% 6% 6% 6% ~ 12% 12% 12%. 3. The burner has reasonable structural design and good combustion performance. The central oxygen is fully mixed with swirl pulverized coal, and the pulverized coal reacts completely. Good flame shape and stability; 2. Easy installation, debugging and maintenance. It integrates high-energy electric ignition device, liquefied gas ((diesel) ignition burner and fire detector, and has an independent cooling water external coil, which is convenient for disassembly and maintenance. 5. The key materials of excellent processing and manufacturing technology are imported materials or similar special domestic materials. The welding and assembly processes are carried out in strict accordance with the specifications, and the overall heat treatment eliminates thermal stress. The design life of the burner is greatly prolonged, and the cooling scheme of the water-cooled jacket burner can ensure the long-term stable and reliable operation of the burner. The design life is 2 years, and the local maintenance time of burner head is once in June. /P% B* T' P/ t, v closed coil water wall radiation chamber structure, design life of 2222 Advantages: 1. Uniform water flow distribution ""four inlets and four outlets ""structure can ensure uniform flow resistance distribution in the pipeline. 3. Control the water vaporization rate in the coil, and adjust the heat balance water vaporization rate in the furnace to 6.5% 6.5% 6.5%, and the steam output is ~ 22, kg/h22, kg/h22, kg/h (full load). [13] The welded joint of coil pipe can reach 12m12m12m12m without a single straight pipe. The thermal stress analysis of the coil shows that the axial thermal expansion of the coil is small, and the radial thermal expansion is 6 mm 6 mm 6 mm 6 mm. ⒌ Multiple groups of cooling water coils are convenient to maintain and replace the burner coil and slag mouth coil, and it is easy to adjust and replace the special coil hot bending, welding, assembly and inspection production line with mature manufacturing and processing technology. Self-repairing refractory structure, less maintenance Advantages: 1. Self-repairing refractory structure, which can improve the service life of the material. A stable slag solid layer of 3333 ~ 5 mm, 5 mm, 5 mm and 5 mm can be formed outside the water cooling wall. Resist the erosion and wear of gas and slag. 3. Reduce the erosion rate of refractory materials by water wall, ensure the service temperature of SiCSiCSiCSiC materials is less than 14141414℃, and ensure that the high-temperature strength does not decrease. 4. Composite structure of refractory materials, To reduce the heat loss of the furnace, there are liquid slag, solid slag, SiCSiCSiCSiC refractory, water wall, inert gas protective layer, high-alumina unshaped refractory and external insulation layer from the inside to the outside. 1. The selection of refractory has low porosity, high high high temperature strength and good thermal stability. The maximum particle size of unshaped refractory is less than 4mm4mm4mm4mm, High temperature compressive strength ≥85N/mm285N/mm285N/mm285N/mm2, permanent thermal deformation ≤ . 73% . 73% . 73%, effective amorphous structure design, convenient construction, maintenance and replacement of refractories, and low price! C$ q$ k- w% P, P5 s quench, water bath syngas cooling and washing scheme, good reliability Advantages: 1. The technical scheme is mature and reliable, and the Texaco Texaco technology is mature. The theoretical analysis and simulation results are in good agreement with the actual situation. 2. Have mature engineering achievements and analysis data on quench ring, and have long-term research on quench ring structure to form a unique quench ring technology. 3. The quenching effect of synthesis gas obviously reduces the flow rate of synthesis gas and keeps the thickness of liquid film, which is helpful for quenching. The effect of slag removal and ash removal is obvious. Water bath is more conducive to the removal of solid phase in synthesis gas than spraying and gas cooling. The saturated water added in synthesis gas can be directly used in the shift process. Advantages: the efficiency and thermal efficiency of cold gas are higher than that of wet process to control the feed water content of pulverized coal to reduce energy consumption, and the efficiency of cold gas is increased by 1111% and the thermal efficiency is increased by 666%. The CCCC conversion rate is higher than that of wet-process CCCC ≥99.5%99.5%99.5%99.5%, which is 1% 1% 1% higher than that of wet-process CCCC, and the solid slag emission is reduced. Compared with the atmospheric furnace, the loss of air exhaust smoke is reduced. The rated thermal efficiency is not less than 95% 95% 95% 95%. 1. By-product of coil cooling water, medium-pressure steam is recovered. 3 ~ 5% 3 ~ 5% 3 ~ 5%. 1. Controlling the amount of N2N2N2N2 into the furnace can reduce the discharge solid-gas ratio of NOxNOxNOxNOx by 12: 112. Solid slag can be completely captured, and can be used as building materials or buried deeply, without other pollution to the environment. Advantages of long continuous operation time and strong production amplitude modulation ability: 1. Fully absorb the existing coal chemical process and mature technology of pulverized coal boiler by using mature process route, and the production process is easy to get through, reducing investment risk and development cycle; 3. The key equipment has a large number of engineering achievements, and the Texaco Texaco Texaco furnace, burner and water wall of professional manufacturers have been localized and used in other similar industrial products. The quality of products can ensure that the service life of pulverized coal burner is long, and the cooling conditions of burner head are better than that of Texaco Texaco Texaco Texaco furnace. Cooling coils can prolong the service life of materials by reducing the local temperature of burner head. The pulverized coal burner is convenient to replace and maintain. The furnace operation is more convenient than shell shell furnace. The ignition, combustion load adjustment and control system of single burner are superior to that of multi-burner. The water wall can prolong the service life of refractories and is simple to replace and maintain.% q! What are the technical advantages of adopting HT-L pulverized coal gasification process in X9 F4 h' p? High temperature coal gasification, high efficiency and energy saving. High carbon conversion rate (≥99%), high cold gas efficiency (≥82%) and effective gas composition (≥9%)? The application range of coal is wide, the fuel can be diversified and the coal can be localized; ? The control system has a high degree of automation and a perfect security interlocking system? Good environmental protection performance, less pollutants discharged; ? With independent intellectual property rights, the technology is mature and reliable, and the main equipment is completely localized; # q: \) {/ S7 c3 ]' I$ T% Q: ^ ' K# L& a. j7 B! C3 z' w , Performance comparison between J+ G- {+ t3 |$ l HT-L pulverized coal gasification process and advanced coal gasification technology in the world today Project HT–L Shell Texaco GSP specific oxygen consumption (nm3/KNM3) 33 (nm3/KNM3) 33 (nm3/KNM3). 33 ~ 36 3336 3336 3336 33 ~ 36 4136 4136 41 ~ 43 3343 3343 3343 33 ~ 36 36 36 36 Effective gas component Co+H2 (%) 89Co+H2 (%). 89Co+H2 (%) 89 ~ 91 8991 8991 8991 89 ~ 93 7893 7893 78 ~ 81 8981 8981 8981 89 ~ 91 9191 91 Carbon conversion rate (%) >: 99 > 99 > 98 > 99 (%) > 99 > 99 > 98 > 99 (%) > 99 > 99 > 98 > 99 (%) > 99 > 99 > 98 > 99 cold gas efficiency (%) 8 (%) 8 (%) 8 ~ 83 883 883 883 8 ~ 83 7183 7183 71 ~ 76 876 876 876 8 ~ 83 83 83 83 coal gasification