CN203229495U - Down-draught fixed bed continuous gasification furnace water-cooling fire grate system - Google Patents
Down-draught fixed bed continuous gasification furnace water-cooling fire grate system Download PDFInfo
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- CN203229495U CN203229495U CN2013201333309U CN201320133330U CN203229495U CN 203229495 U CN203229495 U CN 203229495U CN 2013201333309 U CN2013201333309 U CN 2013201333309U CN 201320133330 U CN201320133330 U CN 201320133330U CN 203229495 U CN203229495 U CN 203229495U
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- main shaft
- cooled grate
- ash
- fire grate
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Abstract
The utility model relates to a down-draught fixed bed continuous gasification furnace water-cooling fire grate system which comprises a main shaft and a water-cooling fire grate, wherein the upper end of the main shaft is provided with an upper ash rake which is arranged above the water-cooling fire grate, the inside of the upper ash rake is communicated with the inside of the main shaft, and a lower ash rake is arranged on the lower part of the main shaft; a cycling pipeline is arranged inside the upper ash rake, an upper water pipe and a lower water pipe which are communicated with the cycling pipeline and are arranged inside the main shaft, the feeding port of the upper water pipe penetrates through the main shaft wall so as to be connected with a cycling water inlet pipe, and the outlet end of the lower water pipe penetrates through the main shaft wall so as to be connected with a cycling water outlet pipe. The down-draught fixed bed continuous gasification furnace water-cooling fire grate system is simple in structure, the fixed part and the movable part of the water-cooling fire grate are respectively provided with the cycling water for cooling, so that the temperature of the water-cooling fire grate can be lowered, the strength of the water-cooling fire grate can be improved, the service life of the water-cooling fire grate can be prolonged, and possibility can be created for designing a large-sized mass pyrolyzing furnace; the upper ash rake and the lower ash rake are connected to the same main shaft, so that the ash falling and ash removal can be simultaneously completed in rotation, and the working efficiency is high.
Description
Technical field
The invention belongs to biomass energy conversion using equipment technical field, particularly a kind of downdraft fixed bed continuous gasification furnace water-cooled grate system.
Background technology
At present, the renewable energy sources such as biomass energy that day by day seriously make of the continuous consumption of fossil energy and environmental problem become important energy source.China's biomass resource is very abundant, and only the turnout in agricultural wastes every year reaches 700,000,000 tons, can make have 3～400,000,000 tons of fuel utilization, amounts to 1.5～200,000,000 tons of standard coals; Other has the forestry residuum, can make have 2～300,000,000 tons of fuel utilization its every year, amounts to 1～1.5 hundred million ton of standard coal.Therefore, agricultural residuum amount usable is amounted to about 3.5 hundred million tons of standard coals, is equivalent to the sixth of the annual raw coal output of China, has great application potential.
But biomass resource has characteristics such as energy density is low, ash oontent height, directly replaces fossil oil to use and has bigger difficulty.Thereby biomass fixed-bed continuous pyrolysis technology is arisen at the historic moment, and namely at a certain temperature biomass resource is decomposed into biomass charcoal, biological fuel gas and liquid fuel etc., to improve the grade of biomass fuel, enlarges its use range.
The equipment that biomass fixed-bed continuous pyrolysis technology is used is downdraft fixed bed continuous pyrolysis stove, and it is made up of upper furnace, water-cooled grate and grey storehouse three parts.Upper furnace is right cylinder, is made up of flame retardant coating, thermal insulation layer and steel plate from inside to outside; Be followed successively by storing layer, drying layer, pyrolytic layer, zone of oxidation, reducing zone and grieshoch from top to bottom in burner hearth inside.Wherein, the zone of oxidation temperature is generally between 550～850 ℃, and its temperature is the highest, and at biomass material one regularly, the zone of oxidation temperature level is relevant with speed of response, can be according to the difference control temperature of reaction to the reaction product needs; Reducing zone is endothermic reaction zones, and its temperature finally is down to below 500 ℃; Grieshoch is inert layer, and its temperature is 450～500 ℃, and temperature variation is little.
The water-cooled grate of downdraft fixed bed continuous pyrolysis stove mainly contains two effects: support raw material and the ash that falls.Supporting role to raw material can make the reactant in the burner hearth keep stable, good operating stability.The grey function that falls of water-cooled grate can in time fall the solid product that the biomass material pyrolytic reaction generates from water-cooled grate, to keep bed thickness constant.By the function of water-cooled grate as can be known, water-cooled grate can be divided into fixed part and moving part, fixed part act as the support raw material, moving part act as ash.By the principle of work of downdraft fixed bed continuous pyrolysis stove as can be known, the working conditions very severe of water-cooled grate, high temperature (500 ℃), high pressure (all weight of the bed of materials), corrosion (gases such as H2, CO2, H2S) are very easy to damage.For improving the water-cooled grate performance, the material of existing water-cooled grate is generally cast steel, high-temperature steel or steel alloy etc., and price is higher, and working conditions is abominable in addition, makes all be no more than 1 year the duration of service of water-cooled grate.In addition, because water-cooled grate insufficient strength has at high temperature limited the amplification of downdraft fixed bed continuous pyrolysis stove again greatly.
Summary of the invention
The purpose of this invention is to provide a kind of simple in structure, can reduce the water-cooled grate temperature and increase the downdraft fixed bed continuous gasification furnace water-cooled grate system of water-cooled grate intensity.
For achieving the above object, technical scheme of the present invention is: downdraft fixed bed continuous gasification furnace water-cooled grate system, comprise main shaft and water-cooled grate, and described main shaft upper end is provided with the ash of going up that is positioned at the water-cooled grate top and harrows, last ash rake is inner to be connected with main shaft inside, and the main shaft bottom is provided with down the ash rake; Last ash rake inside is provided with circulating line, and main shaft inside is provided with upper hose and the outfall sewer that is connected with circulating line, and the upper hose entrance end passes the main shaft wall and is connected with circulating water inlet, and the outfall sewer exit end passes the main shaft wall and is connected with circulating water outlet pipe.
Described water-cooled grate is end to end hollow coil pipe, and the hollow coil pipe is laddertron wide at the top and narrow at the bottom; Water-cooled grate head and the tail two ends are connected with cooling water inlet pipe and cooling water outlet pipe respectively.
Described main shaft outside is respectively equipped with the water inlet seal head corresponding with the upper hose entrance end, the water outlet seal head corresponding with the outfall sewer exit end, and circulating water inlet is connected on the water seal head, and circulating water outlet pipe is connected on the water outlet seal head.
Described water inlet seal head and water outlet seal head include wear ring, top cover labyrinth and lower sealing cover, are provided with sealing-ring between top cover labyrinth and the wear ring, are provided with lower seal between lower sealing cover and the wear ring; Last sealing-ring and lower seal contact with the outerface of spindle respectively.
Compared with prior art, advantage of the present invention is:
1, the present invention includes main shaft and water-cooled grate, described main shaft upper end is provided with the ash of going up that is positioned at the water-cooled grate top and harrows, and last ash rake is inner to be connected with main shaft inside, and the main shaft bottom is provided with down ash and harrows; Last ash rake inside is provided with circulating line, main shaft inside is provided with upper hose and the outfall sewer that is connected with circulating line, the upper hose entrance end passes the main shaft wall and is connected with circulating water inlet, the outfall sewer exit end passes the main shaft wall and is connected with circulating water outlet pipe, and it is simple in structure, and fixed part and the moving part of water-cooled grate have circulating water cooling, can reduce the water-cooled grate temperature, increasing water-cooled grate intensity, improve water-cooled grate work-ing life, is that design macro-organism matter pyrolysis oven is created possibility; Last ash rake and following ash rake are connected on the same main shaft, can finish ash and deashing simultaneously, high efficiency when rotating.
2, the main shaft outside is respectively equipped with the water inlet seal head corresponding with the upper hose entrance end, the water outlet seal head corresponding with the outfall sewer exit end, and circulating water inlet is connected on the water seal head, and circulating water outlet pipe is connected on the water outlet seal head; Water inlet seal head and water outlet seal head include wear ring, top cover labyrinth and lower sealing cover, are provided with sealing-ring between top cover labyrinth and the wear ring, are provided with lower seal between lower sealing cover and the wear ring; Last sealing-ring and lower seal contact with the outerface of spindle respectively, and last ash rake has the circulating pipe that communicates with main shaft inside, and upwards ash rake and the inner recirculated water that feeds of main shaft can effectively reduce and go up ash rake temperature, working strength and the work-ing life of ash rake in the raising.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the structural representation of water inlet seal head and water outlet seal head among Fig. 1;
Fig. 4 is scheme of installation of the present invention.
Embodiment
Downdraft fixed bed continuous gasification furnace water-cooled grate system as depicted in figs. 1 and 2, it comprises main shaft 1 and the water-cooled grate 2 that fixedly installs, water-cooled grate 2 is end to end hollow coil pipe, the hollow coil pipe is laddertron wide at the top and narrow at the bottom, be beneficial to the discharge of solid product, be connected with cooling water inlet pipe 12 and cooling water outlet pipe 13 respectively at the head and the tail two ends of water-cooled grate 2, the water-cooled grate 2 inner recirculated waters that feed, can reduce the temperature of water-cooled grate 2, and not influence ash.Water-cooled grate 2 is made of trapezoidal steel.Main shaft 1 upper end be provided be positioned at above the water-cooled grate 2 on ash rake 3, last ash rake 3 is inner to be connected with main shaft 1 inside, main shaft 1 bottom is provided with down greyly harrows 4.Be provided with circulating line 5 in last ash rake 3 inside, main shaft 1 inside is provided with upper hose 6 and the outfall sewer 7 that is connected with circulating line 5, upper hose 6 and outfall sewer 7 are located on the main shaft 1, be respectively equipped with the water inlet seal head 8 corresponding with upper hose 6 entrance ends, the water outlet seal head 9 corresponding with outfall sewer 7 exit end in main shaft 1 outside, be connected with circulating water inlet 10 at water inlet seal head 8, be connected with circulating water outlet pipe 11 at water outlet seal head 9.
As shown in Figure 3, water inlet seal head 8 and water outlet seal head 9 include wear ring 14, top cover labyrinth 15 and lower sealing cover 16, be provided with sealing-ring 17 between top cover labyrinth 15 and the wear ring 14, be provided with lower seal 18 between lower sealing cover 16 and the wear ring 14, last sealing-ring 17 and lower seal 18 contact with the outside surface of main shaft 1 respectively, between wear ring 14 and main shaft 1, form circulating water cavity, wear ring 14 transfixions when main shaft 1 rotates.Upper hose 6 connects with the circulating water cavity of circulating water inlet 10 by water inlet seal head 8, outfall sewer 7 connects with the circulating water cavity of circulating water outlet pipe 11 by water outlet seal head 9, constitute an airtight recirculated water cooling path, when work, can realize on the cooling of ash rake 3 and main shaft 1.
As shown in Figure 4, when the present invention used, main shaft 1 lower end drove by wheel box 22 and electric motor 23 and is connected, and last ash rake 3 is positioned at vaporizer 19 bottoms, water-cooled grate 2 and is positioned at 20 tops, grey storehouse, following grey 4 ash output hole 21 tops that are positioned at grey storehouse 20 of harrowing; Concrete working process is: when the biomass fixed-bed continuous pyrolysis furnaceman of downdraft does, feed recirculated water earlier, the biomass fixed-bed continuous pyrolysis furnace igniting of downdraft is just often given in circulating water outlet pipe 11 water outlets again; When the temperature of the water-cooled grate 2 top bed of materials surpasses 400 ℃, actuating motor 23, to rotate ash rake 3 and following ash rake 4, the ash that the ash on the water-cooled grate 2 is fallen in grey storehouse 20, the grey storehouse 20 is discharged from ash output hole 21.
In the present invention, because ash rake 4 working resistances are less down, temperature is low, need not to pass through circulating water cooling; Also visual actual needs increases the refrigerating unit that arranges as circulating line 5, upper hose 6 and outfall sewer 7.
Claims (4)
1. downdraft fixed bed continuous gasification furnace water-cooled grate system comprises main shaft and water-cooled grate, it is characterized in that: described main shaft upper end is provided with the ash of going up that is positioned at the water-cooled grate top and harrows, and last ash rake is inner to be connected with main shaft inside, and the main shaft bottom is provided with down ash and harrows; Last ash rake inside is provided with circulating line, and main shaft inside is provided with upper hose and the outfall sewer that is connected with circulating line, and the upper hose entrance end passes the main shaft wall and is connected with circulating water inlet, and the outfall sewer exit end passes the main shaft wall and is connected with circulating water outlet pipe.
2. downdraft fixed bed continuous gasification furnace water-cooled grate as claimed in claim 1 system, it is characterized in that: described water-cooled grate is end to end hollow coil pipe, and the hollow coil pipe is laddertron wide at the top and narrow at the bottom; Water-cooled grate head and the tail two ends are connected with cooling water inlet pipe and cooling water outlet pipe respectively.
3. downdraft fixed bed continuous gasification furnace water-cooled grate as claimed in claim 1 or 2 system, it is characterized in that: described main shaft outside is respectively equipped with the water inlet seal head corresponding with the upper hose entrance end, the water outlet seal head corresponding with the outfall sewer exit end, circulating water inlet is connected on the water seal head, and circulating water outlet pipe is connected on the water outlet seal head.
4. downdraft fixed bed continuous gasification furnace water-cooled grate as claimed in claim 3 system, it is characterized in that: described water inlet seal head and water outlet seal head include wear ring, top cover labyrinth and lower sealing cover, be provided with sealing-ring between top cover labyrinth and the wear ring, be provided with lower seal between lower sealing cover and the wear ring; Last sealing-ring and lower seal contact with the outerface of spindle respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201333309U CN203229495U (en) | 2013-03-22 | 2013-03-22 | Down-draught fixed bed continuous gasification furnace water-cooling fire grate system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201333309U CN203229495U (en) | 2013-03-22 | 2013-03-22 | Down-draught fixed bed continuous gasification furnace water-cooling fire grate system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203229495U true CN203229495U (en) | 2013-10-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013201333309U Withdrawn - After Issue CN203229495U (en) | 2013-03-22 | 2013-03-22 | Down-draught fixed bed continuous gasification furnace water-cooling fire grate system |
Country Status (1)
| Country | Link |
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| CN (1) | CN203229495U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103173246A (en) * | 2013-03-22 | 2013-06-26 | 河南宇能生物质电力有限公司 | Water-cooling fire grate system of continuous pyrolyzing furnace of downdraft biomass fixed bed |
| CN110437885A (en) * | 2019-07-17 | 2019-11-12 | 广州环渝能源科技有限公司 | A kind of biomass gasifying furnace water-cooling system |
-
2013
- 2013-03-22 CN CN2013201333309U patent/CN203229495U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103173246A (en) * | 2013-03-22 | 2013-06-26 | 河南宇能生物质电力有限公司 | Water-cooling fire grate system of continuous pyrolyzing furnace of downdraft biomass fixed bed |
| CN103173246B (en) * | 2013-03-22 | 2015-01-14 | 河南宇能生物质电力有限公司 | Water-cooling fire grate system of continuous pyrolyzing furnace of downdraft biomass fixed bed |
| CN110437885A (en) * | 2019-07-17 | 2019-11-12 | 广州环渝能源科技有限公司 | A kind of biomass gasifying furnace water-cooling system |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131009 Effective date of abandoning: 20150114 |
|
| RGAV | Abandon patent right to avoid regrant |