TW200521220A - Gasification reaction system for carbonaceous material - Google Patents

Abstract

A gasification reaction system for carbonaceous material is disclosed. The first gasification zone is used for the first gasification stage reaction process for the first admixed fuel to produce the first synthesis gas. The second gasification zone is interconnected to the first gasification zone in that heat provided by the synthesis gas is used in proceeding reaction of the first synthesis gas and the second gasification stage reaction process for the second admixed fuel. The filtering regeneration unit is interconnected to the second gasification zone for the recovering filtering process of the synthesis gas. Through the second gasification zone, synthesis gas with high heat value is produced and system blocking from adhesion of agglomerated fly ash can be avoided.

Description

200521220

[Technical field to which the invention belongs] The present invention relates to a gasification reaction of a coal raw material for a gasification reaction, thereby generating a Guller, first ', and particularly a system utilizing an attached carbide gasification reaction. W ..., value syngas and avoid slag [previous technology] The power generated by the combustion system is used, and the application level covers a wide range. Jufan Petrochemical is used in the industry, its motors, food, glass, metal processing, feed Η, The second battery has expanded beyond the printed circuit board and semiconductor packaging industries. Among them, Megawa uses carbides for its industry.

Wire, f this & M ^ θ combustion system that should also generate syngas

Patent Bulletin No. 4874402 (case 4402 for short), No. 4771391 (case 9J7 of Wu Jian S), No. 5089030 (case 0 0 for short) and No. 9937 (case 9 37 for short) are disclosed as follows: Related technology. The 402 case was disclosed by the US company Shell. The gasification reaction temperature in the center of the system was about 2000 degrees, and the outlet gas was in the middle of 1350 degrees to 150 degrees. Utilization cycle Pressurized refrigerant gas quenches and cools the "gas" to between 1100 and 900 degrees, and then enters the waste heat boiler for use. Case 917 was disclosed by Japan's HITACHI. The system is a two-stage swirling structure with different proportions of oxygen for feeding. Its outlet temperature is about 1 200 degrees. The heat recovery method of water wall is used above to reduce the gas temperature to 45. degree. Case 03 discloses a device and method for generating activated carbon and gas using solid fuel, supplying solid fuel in a first gasification zone, preheating the gas, and then gasifying in a second gasification zone. Three gasification zones

Page 5 200521220 V. Description of the invention (2) The reaction with coke has the effect of preheating the air and reducing the oxygen content in the preheating air. The 937 case was fed with carbide from the lower reaction furnace for reaction, and the reaction temperature was between 70 ° C and 900 ° C. Then the unreacted carbides, tars and heat transfer materials in the lower reaction furnace were sent up with the airflow. To the upper reaction furnace ', an oxidant is injected to perform a further gasification reaction. The temperature of the upper reaction furnace is higher than that of the lower reaction furnace, which is about 900 to 1100 degrees. Its purpose is to settle the substances that have not reacted completely in the lower reaction furnace, and the gasification reaction is performed again by the upper reaction furnace. . In summary, the two-stage gasification reaction is the mainstream trend of current research and development. Although the previous case can be reasonably operated and has certain effects, the control of the feedstock of pulverized coal and other carbides is not easy, and the contact time of the gasification reaction is quite short. 'In the case of a low reaction temperature, the coal raw material is taken out before the reaction is completed. Furthermore, the slag generated during the gasification reaction is likely to adhere to the tube wall of the reaction zone and cause a blocking phenomenon, which affects the flow of the synthesis gas. [Summary of the Invention] In view of this, the present invention discloses a system for carbide gasification reaction, the main purpose of which is to increase the calorific value and output of synthesis gas, and to avoid the phenomenon of adhesion and blockage of slag. — The carbide gasification reaction system according to the present invention is mainly composed of a first gasification reaction unit, a second gasification reaction unit, and a filter regeneration unit. The upper region of the first gasification reaction unit is gradually formed with a constricted portion, and the first gasification reaction unit is used for the first mixed fuel to perform the first gas stage reaction operation to generate syngas. The second gasification reaction unit is connected to the first gasification reaction unit, and the second gasification reaction unit corresponds to the upper contraction portion,

Page 6 200521220 V. Description of the invention (3) The tapered shape is placed in the lower area, which mainly allows the synthesis gas to work, and the synthesis gas will circulate the impurities in the synthesis gas. In addition, the second mixed combustion element will be recirculated and the material may be recycled. Attached to the coal through the basic creative spirit mentioned above, the picture is made in more detail. [Embodiment] The coal in the sinking and second-mixing production and quality granule sink is due to the gasification of the particles. This is explained below. The setting of the 4 ° second gasification reaction unit Combustion agent is used to increase the heat value of the reaction in the second gasification stage, and is separated by filtration and regeneration for subsequent recycling. The anaerobic particles will effectively avoid slag, tar, etc. generated in the second reaction of the single gasification reaction to effectively prevent the blocking phenomenon. The reader can preliminary understand that the present invention will give preferred embodiments, and cooperate with the accompanying system of carbide gasification reaction disclosed according to the present invention, please refer to FIG. 1 ", which is mainly composed of the first gasification reaction unit. The second gasification reaction unit 20 and the filter regeneration unit 30 are configured. A feed port Π is provided on one side of the first gasification reaction unit ιo for the injection of the first mixed fuel. The first mixed fuel 100 is mainly composed of an oxidant and coal. The coal in the first mixed fuel 100 is powdery and has a particle size of about 50um to 20001111. The oxidant is generally water. A mixture of vapor and oxygen-containing gas such as air. The upper region of the first gasification reaction unit 10 gradually shrinks upward to form an upper contraction portion 12. The second gasification reaction unit 20 is in communication with the first gasification reaction unit 10, and a lower region thereof is gradually tapered toward the first gasification reaction unit 10 to form a lower contraction portion 21 corresponding to the upper contraction portion 12 and communicating. The second gasification reaction unit 20 is provided with a first inlet 22 at the lower contraction portion 21 to inject water vapor 220 into the second gasification reaction unit 20. A second area above the second gasification reaction unit 20 is provided.

200521220 V. Description of the invention (4) The inlet 23 is used to inject the _, θ people, including coal and catalyst 200. The second mixed burner coal is granular, and the particle size is "/". The second mixed fuel agent 200 contains about, town, nickel, zinc, etc. and: to the left and right, the heat transfer material is generally filtered. The regeneration unit 30 is in communication with the gen. F compound. For recovery and filtering operations, the main dualization reaction unit 20 is used to feed fine red. The + eclipse system is composed of the Shenji runner 32 and the cyclone separator 34: = The flow channel 32 is connected to the second gasification reaction unit 2. One side 'is installed at the connection point, and the second gasification reaction unit 20 = gold is installed. : The hole can be adjusted according to the needs, generally within the range of 0 to 1mm. The deposition flow channel 32 is set up so that the second: = 0 synthesis gas supplied by Shen & the impurity particles Shen Dian produced 3m in the sediment and the coal storage tank connected to the bottom of the deposition flow channel 32 is now settled in The coal or impurities collected in the deposition channel 32 are collected on the coal particles. Therefore, the particles can be recovered as raw materials of the second mixed fuel after being processed as fish and fish. The whirlwind separates the cry 34 sedimentation channel 32, and a fly ash storage tank 35 is connected to the bottom to fly ash material. In fact, the ash stored in the fly ash storage tank 35 can also be recycled. Therefore, a return passage 4 is provided between the fly ash storage tank 35 and H: oi. They are connected so that the fly ash in the fly ash J heart 35 becomes the raw material of the first mixed fuel 丨 00. The composition of the system structure of the carbide gasification reaction of the present invention reveals that, as for the first gasification stage reaction operation and the second ^, stage reaction operation performed in the system, the conventional technology feed control is difficult and easy to cause = ,, Dagger's Residual 200521220

The clogging phenomenon caused by this, please continue to refer to the "Figure 2" to explain. The system of the carbide gasification reaction according to the present invention, first provides a first mixed fuel containing oxidant and coal 100 into the first A gasification reaction unit 10 performs a reaction operation in a first gasification stage. The first mixed fuel 100-contains coal and an oxidant, wherein the particle diameter of the coal is about 150um as described above 'and can be obtained from the fly ash recovered by the fly ash storage tank 35. The working temperature in the first gasification reaction unit 10 is about 1000 to 13,000 degrees. At this time, the powdery coal in the first mixed fuel 100 and the oxidant such as steam and X air are subjected to the first The reaction operation in the gasification stage causes coal to be heated to release volatile substances, and forms coke particles, unreacted coal and molten liquid miscellaneous shellfish. This is commonly known as slag. The first mixed fuel 100 will generate synthesis gas after the first gasification reaction unit 10 performs the first gasification stage reaction operation. This synthesis gas contains a large amount of carbon monoxide, hydrogen, and a small amount of carbon dioxide and coal gas. The reaction operation in the gasification stage can be completed within a few seconds. As the air flow rises, the synthesis gas and slag will enter the second gasification reaction unit 20 through the upper shrinkage portion 12 of the first gasification reaction unit 10. At this time, the second mixed fuel 200 and water vapor 220 will be reacted with the synthesis gas in the second gasification stage. In more detail, the second mixed fuel 2000 injected from the upper area of the second gasification reaction unit 20 will be matched with the water vapor injected from the lower part of the bottom of the second gasification reaction unit 20, The second gasification stage reaction operation is performed with the synthesis gas after the first gasification stage reaction operation. At this time, the synthesis gas composed of hydrogen, monoxide and carbon oxide ^ will be steamed with coal, catalyst and water.

Page 9 200521220 V. Description of the invention (6) The gas is reacted, and the coal is placed in the second gasification reaction unit 20 inner ring. At this time, the thermal energy provided by the synthesis gas is also a common manifestation: it is provided as the thermal energy required for the reaction operation in the second gasification stage. Therefore, the operating temperature of the reaction unit 20 will be about 900 degrees. In this case, Wenyi Milky Gas reacts with the catalyst and the first synthesis gas to react with water gas, thereby increasing the production and heating value of the synthesis gas. '' In addition, the rapid cyclic motion performed by Brother 1 gasification reaction unit 20 has the function of crushing materials. This feature is of great help for the processing of materials with sticky slag and other materials; plus a second mixed fuel 2 〇〇Medium grain rice ^ 1 mra ^ coal has good gas-solid contact performance, so the crushed coal anorexia is more likely to be adhered to the slag, the conventional technology has the slag adhesion to the pipe wall caused by blocking phenomenon can be solved. Furthermore, the coal of the second mixed fuel 2000 is subjected to a recirculation cycle movement in the second gasification reaction unit 20, and the shrinkage portion 21 forms a stagnation bed 230 under the second gasification reaction unit 20, and Increasing the residence time makes the reaction more complete and also helps to increase the production and heating value of the synthesis gas. The synthesis gas after the reaction operation in the second gasification stage will flow into the filter regeneration unit 30 to perform the synthesis gas recovery and filtration operation. The filter regeneration unit is composed of a sink flow path 32 and a cyclone separator 34. Through the filter screen between the deposition flow channel 32 and the second gasification reaction unit 20, coal particles can be prevented from entering the thorium regeneration unit 30, so that coal with a predetermined particle size or more is retained in the second gasification reaction unit. 20, to prevent coal from being brought out of the second gasification reaction unit 20 with the flow of syngas. The synthesis gas flow then passes through the deposition flow channel 32. Due to the decrease of the flow velocity, the impurity particles such as coal in the synthesis gas are precipitated in the sediment.

200521220

At the bottom of the flow channel 32, the coal can be stored and stored in the coal storage tank for subsequent recycling. Then, alum, sound to & Yiyi_m storage, if anyone has passed / considered regeneration of 30 units of Cyclone Gongli Cry 34 will further deplete the synthesis gas in U day] to catch the wind knife off for a living coal Dust, impurities, etc. μ, white p = plutonium produced after the chemical reaction is searched for, and separated from the synthesis gas, and then collected by the I ash storage tank 35. In the description of Feifangde ^. ^ Α The fly ash I stored in the fruiting and storage tank 35 is used as the raw material of the mixed fuel, so a return passage 40 can be added. The ash storage tank 35 is connected to the first gasification reaction unit 1 〇. In summary, the carbide gasification system disclosed in the present invention has at least the following advantages:

(1) Enhancing the production and heating value of synthesis gas: The system for reacting carbide gas according to the present invention utilizes the connected first and second gasification reaction units to enter the first and second gasification reaction operations in the lamp, The second gasification stage reaction operation uses the syngas generated from the first gasification stage reaction operation to carry out the second gasification stage reaction operation to generate a formazan-specific combustible gas in the second gasification reaction unit. 'In order to increase the production and heating value of syngas, and effectively improve the quality of syngas.

(2) Improve the problem of slag blockage: As mentioned earlier, the reaction operation in the second gasification stage is performed using the sensible heat of the synthesis gas generated in the reaction operation in the first gasification stage. Therefore, the operating temperature of the second gasification reaction unit will be lower than that of the first gasification reaction unit, so that when the slag can be reacted in the second gasification stage, the second gasification reaction unit operates in the second gasification reaction unit. In the stagnation bed formed by the recirculation motion and coal particles, the gasification reaction is more complete, and the slag can be condensed and attached to the coal particles in the second mixed fuel, which effectively solves the conventional technology. Caused by slag easily attached to the pipe wall

200521220 V. Description of the invention (8) Blocking problem. Low cost and low cost · The carbide gasification reaction system provided by the present invention is simple and early, and the feed control is simple. The coal particles and fly ash in the synthesis gas can be recovered for subsequent use. The whole Compared with the conventional technology, the system has a lower operating cost. The above-mentioned 'are only the preferred embodiments of the present invention' and are not intended to limit the scope of the present invention; that is, all equivalent changes and modifications made in accordance with the scope of the patent application for the present invention are covered by the scope of the patent for the invention . 200521220 Brief Description of the Drawings Figure 1 is a schematic diagram of the system of carbide gasification reaction of the present invention. Fig. 2 is a schematic diagram of a second gasification reaction unit of the carbide gasification reaction of the present invention. [Illustration of symbols] 10 First gasification reaction X3V Early stage 11 Feed π 12 Upper shrinkage 20 Second gasification reaction gg Early stage 21 Lower shrinkage 22 First feed Π 23 Second feed Π 30 Filtration Regeneration unit 31 Strainer 32 Deposition flow channel 33 Coal storage tank 34 Cyclone separator 35 Fly ash storage tank 40 Return channel 100 First mixing • pik / ”, agent 200 Second mixing ρχ / i,, agent 220 water vapor 230 stagnation bed

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Claims (1)

200521220 VI. Scope of Patent Application '-1 ~ 1. A system of carbide gasification reaction, which generates coal gas through a two-stage gasification reaction to generate syngas, which includes: another first gasification reaction unit, A first mixed fuel containing oxidant disk coal is supplied to perform a first gasification stage reaction operation to generate a synthesis gas, and an upper region of the first gasification reaction unit is gradually formed to have an upper constriction; A second gasification reaction unit, and a lower region of the second gasification reaction unit is gradually formed into a lower constriction communicating with the upper constriction, so that the synthetic gas flows into the second gasification reaction unit, and One L of the second mixed fuel containing coal, catalyst, and heat transfer material and the synthesis gas are circulated in the first gasification reaction unit of the thorium, and the second gasification is performed by using the heat energy provided by the synthesis gas. Stage reaction operation; and a filter regeneration unit, which is connected to one side of the second gasification reaction unit, is used to perform recovery filtering, operation of the synthesis gas. 2. The system for carbide gasification reaction according to item 1 of the scope of the patent application, wherein the first gasification reaction unit has a feed port for the first mixed fuel to be injected into the first gasification reaction unit . 3. The system for carbide gasification reaction according to item 1 of the scope of the patent application, wherein the second gasification reaction unit has a first inlet in an area above the second gasification reaction unit for the A second mixed fuel is injected into the second gasification reaction unit. 4. The system for carbide gasification reaction as described in item 1 of the scope of the patent application, wherein the second gasification reaction unit has a second feed inlet located under the second gasification reaction unit, and a For external water vapor injection Page 14 200521220 6. Scope of patent application This second gasification reaction unit. 5. The system for carbide gasification reaction according to item 1 of the scope of the patent application, wherein the filtering and regenerating unit includes a sedimentation channel, so that the impurity particles in the second synthesis gas are deposited on the bottom of the sedimentation channel. . 6. The system for carbide gasification reaction according to item 5 of the scope of the patent application, wherein the filter regeneration unit further includes a coal storage tank connected to the deposition flow path to collect and store the impurity particles. 7. The system for carbide gasification reaction according to item 6 of the scope of the patent application, wherein the δH filtration and regeneration unit further includes a cyclone, which is connected to the deposition flow channel to separate the fly in the second synthesis gas. gray. 8. The system for carbide gasification reaction according to claim 7 of the application, further comprising a fly ash storage tank connected to the cyclone separator for collecting and storing the fly ash. * 9 · The system for carbide gasification reaction described in item 1 of the H patent scope, the in gas system is composed of a mixture of hydrogen, carbon monoxide and coal gas. The system for the gasification reaction of carbides according to item 1, the particle size of the coal of 7 Shen Erzhi 2 combustor is 50um to 200um. 11 · The carbide gasification reaction system described in the first patent scope of Zhizhong Xi ®-, e AM, Xing Tchangdi a mixed elixir 12. If the patent scope of patent application, the particle size is lmm To 10_. Wherein, the oxidant is a system including a gasification reaction of carbides as described on the right. 1 3. As described in the scope of patent application, water vapor and oxygen. Among them, the system of carbide gasification reaction of the heat transfer material *, as described in the patent scope of Shenyan Patent No. 丨, the system of carbide gasification reaction, page 15 200521220 Page 16