CN105062528A - Coal-pyrolysis polygeneration process and device applicable to pulverized coal furnace - Google Patents
Coal-pyrolysis polygeneration process and device applicable to pulverized coal furnace Download PDFInfo
- Publication number
- CN105062528A CN105062528A CN201510562463.1A CN201510562463A CN105062528A CN 105062528 A CN105062528 A CN 105062528A CN 201510562463 A CN201510562463 A CN 201510562463A CN 105062528 A CN105062528 A CN 105062528A
- Authority
- CN
- China
- Prior art keywords
- gas
- coal
- pyrolysis
- pipeline
- flue gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000197 pyrolysis Methods 0.000 title claims abstract description 88
- 239000003245 coal Substances 0.000 title claims abstract description 66
- 238000000034 method Methods 0.000 title abstract description 12
- 230000008569 process Effects 0.000 title abstract description 9
- 239000007789 gas Substances 0.000 claims abstract description 78
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 69
- 239000003546 flue gas Substances 0.000 claims abstract description 60
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 26
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000001301 oxygen Substances 0.000 claims abstract description 19
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 19
- 238000000926 separation method Methods 0.000 claims abstract description 19
- 239000003034 coal gas Substances 0.000 claims abstract description 15
- 238000000746 purification Methods 0.000 claims abstract description 12
- 238000002485 combustion reaction Methods 0.000 claims abstract description 6
- 238000001179 sorption measurement Methods 0.000 claims abstract description 6
- 238000009434 installation Methods 0.000 claims description 52
- 239000000446 fuel Substances 0.000 claims description 27
- 235000011089 carbon dioxide Nutrition 0.000 claims description 24
- 239000002817 coal dust Substances 0.000 claims description 23
- 238000004519 manufacturing process Methods 0.000 claims description 21
- 241000270295 Serpentes Species 0.000 claims description 17
- 238000004140 cleaning Methods 0.000 claims description 16
- 239000000843 powder Substances 0.000 claims description 12
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 9
- 239000002808 molecular sieve Substances 0.000 claims description 9
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 7
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 6
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 239000001257 hydrogen Substances 0.000 claims description 6
- 229910052739 hydrogen Inorganic materials 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 239000003317 industrial substance Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 230000000274 adsorptive effect Effects 0.000 claims description 3
- 239000000428 dust Substances 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims description 3
- -1 induced draft fan Substances 0.000 claims description 3
- KSSNXJHPEFVKHY-UHFFFAOYSA-N phenol;hydrate Chemical compound O.OC1=CC=CC=C1 KSSNXJHPEFVKHY-UHFFFAOYSA-N 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 239000003337 fertilizer Substances 0.000 claims description 2
- 238000005057 refrigeration Methods 0.000 claims description 2
- 239000000779 smoke Substances 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims 1
- 238000002309 gasification Methods 0.000 abstract description 4
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract 1
- 239000001569 carbon dioxide Substances 0.000 abstract 1
- 239000000567 combustion gas Substances 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 7
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 230000008859 change Effects 0.000 description 3
- 235000009508 confectionery Nutrition 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000003345 natural gas Substances 0.000 description 3
- 239000011269 tar Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- 238000005314 correlation function Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000011280 coal tar Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000000341 volatile oil Substances 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
Abstract
The invention relates to the field of the polygeneration process of coal and aims at providing a coal-pyrolysis polygeneration process and device applicable to a pulverized coal furnace. The coal-pyrolysis polygeneration process comprises the steps of coal pyrolysis, gas separation, semicoke combustion and coal gas purification. The coal-pyrolysis polygeneration device comprises a pyrolysis device, a gas separation device and a gas purification device, wherein a snake-shaped circular tube is arranged in the pyrolysis device, and a closed cylindrical container is arranged outside the pyrolysis device; the gas purification device is used as a pressure swing adsorption device for separating oxygen and carbon dioxide from flue gas; and the gas purification device is used for purifying crude gas. By virtue of the coal-pyrolysis polygeneration process, the problems that the coal resources of existing pulverized coal furnaces are directly combusted and are low in use ratio, and the pollution is serious can be solved; by virtue of comprehensive utilization of the pyrolysis, the gasification and the combustion of coal, the utilization rate of the coal resources is increased; and the coal-pyrolysis polygeneration process is one of the important measures for effectively solving the problems of energy utilization and environmental pollution in China.
Description
Technical field
The invention relates to the multi-production process field of coal, particularly a kind of pyrolysis of coal multi-production process and device thereof being applicable to coal-powder boiler.
Background technology
The energy structure feature of China is rich coal, weak breath, oil-poor, there is a serious shortage in the supply for Sweet natural gas and petroleum resources with in short supply, and coal in China 80% is based on the direct burning of single production process, not only utilising efficiency is extremely low but also seriously polluted, therefore seeks a kind of clean and effective, to solve the coal resources comprehensive utilization mode of Sweet natural gas problem in short supply imperative simultaneously.The Poly-generation technology of coal is that pyrolytic gasification easy in coal is partially converted into coal gas and tar, and coal gas makes Sweet natural gas by following process, and for industry, chemical industry and civilian, tar can be used as fuel and uses or carry out the oil fuel that high added value is produced in deep processing; The semicoke not easily gasified is sent in burner hearth and directly burns as boiler oil, the steam of generation is used for generating, heat supply etc., and the sulphur in coal, nitrogen element are proceeded in coal gas and processed simultaneously, the flue gas pollutant produced in combustion processes will reduce greatly.This technology integrates burning, pyrolysis, gas purification, methanation, extraction of essential oil and flue gas pollutant emission-reducing process, is one of effective means of coal resources in China comprehensive utilization.Poly-generation technology due to coal is that multiple production technique of coal are combined is that a system is considered, improves coal resources utilization ratio, therefore can solve energy and environment problem better from the angle of whole utilization efficiency.
Current China mainly adopts heat, electricity, gas Poly-generation technology based on pyrolysis of coal, this technology is mainly used in circulating fluidized bed, its main technological features is by circular fluid bed and pyrolysis oven coupling, utilize the cycling hot ash of circular fluid bed or semicoke as the thermal source of pyrolysis of coal, partial gasification, its advantage is that the fuel tolerance of circulating fluidized bed is wide, material can fully mix, uniformity of temperature profile in bed, can provide good reaction conditions for the pyrolysis of coal.But circulating fluidized bed is as pyrolysis reactor, need a large amount of fluidizing agents, therefore cause the thermosteresis of system very large, and in the pyrolysis gas of fluidized-bed, carry-over (as thin ash etc.) content is more, adds the complicacy of afterbody purification system.
China with coal be the boiler shape of fuel mainly based on coal-powder boiler, and circular fluid bed is still in developmental stage, and quantity, far away from coal-powder boiler, there is no the research of associating Poly-generation efficiency utilization related process at present for the coal-powder boiler of One's name is legion.Therefore when, energy-saving and emission-reduction day by day serious in environmental pollution are instantly extremely urgent, in the urgent need to finding a kind of cleaning, energy-conservation coal multi-production process, to meet China's One's name is legion, to be badly in need of the coal-powder boiler of transformation, the high-efficiency cleaning finally realizing coal resource utilizes.
Summary of the invention
Main purpose of the present invention is to overcome deficiency of the prior art, provides a kind of and can solve existing coal and directly to burn the pyrolysis of coal multi-production process being applicable to coal-powder boiler and the device that the effective utilization rate of energy that brings is low, pollute the problem such as heavily.For solving the problems of the technologies described above, solution of the present invention is:
There is provided a kind of pyrolysis of coal multi-production process being applicable to coal-powder boiler, comprise the pyrolysis of coal, gas delivery, coal-char combustion, gas purification, described pyrolysis of coal multi-production process specifically comprises the steps:
(1) pyrolysis installation is sent into from Pulverized Coal Bin coal dust out by coal dust pipeline, by the heat exchange between heating carrier, make coal dust carry out pyrolysis at 700 ~ 900 DEG C of temperature, after pyrolysis, obtain semicoke, raw gas, and as the flue gas after heating carrier heat exchange;
(2) semicoke obtained in step (1) is sent into Pulverized Fuel Boiler Furnace by semicoke pipeline, main pipe rail and participate in burning;
The flue gas obtained in step (1) is sent into gas separation unit by flue gas pipeline, is separated into carbonic acid gas, oxygen and residue flue gas; Isolated oxygen is sent into Pulverized Fuel Boiler Furnace by oxygen pipeline and is participated in burning; Isolated carbonic acid gas is sent in the pulverized coal channel of pyrolysis installation as fluidizing medium by carbonic acid gas pipeline, carbonic acid gas can react at 700 ~ 900 DEG C of temperature with the semicoke produced in pyrolysis installation, reaction generates carbon monoxide, carbon monoxide can react with the water that volatilizes in coal dust and generate hydrogen, and carbon monoxide and hydrogen are namely as a part of raw gas after pyrolysis; Isolated residue flue gas is mixed with semicoke by residue flue gas pipeline again, sends into Pulverized Fuel Boiler Furnace and participates in burning;
In Pulverized Fuel Boiler Furnace, burning produces high-temperature flue gas, Boiler Steam and lime-ash, and the temperature of high-temperature flue gas is between 900 ~ 1100 DEG C, after high-temperature flue gas is drawn from Pulverized Fuel Boiler Furnace exhaust pass side, send in pyrolysis installation, for the heating carrier as pulverized coal pyrolysis in step (1) by high temperature flue gas pipeline;
(3) raw gas obtained in step (1) is drawn one successively by raw gas house steward, fluidizing medium pipeline, enter bottom pyrolysis installation inner snake type pipe as fluidizing medium, all the other raw gas are sent into gas-cleaning installation by raw gas house steward and are purified, and the raw gas after purification is for being processed into the coal gas product of high added value.
In the present invention, in described step (2), the Boiler Steam of generation can be used for generating, heat supply or refrigeration; The lime-ash produced can be used for building resource, industrial chemicals and product, extraction rare metal, produce chemical fertilizer.
In the present invention, the coal gas product obtained in described step (3) can as industrial chemicals, industrial gas or domestic gas.
Pyrolysis of coal multi-joint-production apparatus based on described pyrolysis of coal multi-production process is provided, comprises pyrolysis installation, gas separation unit, gas-cleaning installation;
Described pyrolysis installation is inside and outside two portions respectively; The inside of pyrolysis installation is (metallic substance is made) snake type (thin-walled) pipe, snake type circular tube spiral arranges downwards (caliber and intercept are determined according to the concrete size of pyrolysis installation), the top of snake type pipe is communicated with Pulverized Coal Bin by coal dust pipeline, the top of snake type pipe is communicated with gas-cleaning installation by raw gas house steward, the bottom of snake type pipe is communicated with by carbonic acid gas pipeline device separated from the gas, the bottom of snake type pipe is also communicated with raw gas house steward by fluidizing medium pipeline, and the bottom of snake type pipe is communicated with main pipe rail by semicoke pipeline; Wherein, one end of main pipe rail be semicoke pipeline and residue flue gas pipeline converge mouth, the other end is communicated with Pulverized Fuel Boiler Furnace;
The outside of pyrolysis installation is (metal or temperature-resistant material are made) airtight drum ladle (size is determined according to specific requirement), the bottom of drum ladle is communicated with Pulverized Fuel Boiler Furnace by high temperature flue gas pipeline, and the top of drum ladle is communicated with by flue gas pipeline device separated from the gas;
Described gas separation unit comprises dedusting heat sink, dewatering agent, adsorbing tower with molecular sieve, induced draft fan, water cooler, vacuum pump, for as pressure-swing absorption apparatus oxygen and carbonic acid gas separated from flue gas; Described dedusting heat sink is used for carrying out dedusting cooling to the heat smoke entering gas separation unit; Described induced draft fan is used for carrying out flue gas conveying (comprise and the flue gas by dedusting heat sink is transported to water cooler); Described water cooler is used for the flue gas through dedusting heat sink to drop to normal temperature; The adsorptive power that described adsorbing tower with molecular sieve can utilize molecular sieve to produce gas with various is different with rate of adsorption, by coordinating (regulating the pressure change run and change in adsorption tower) with induced draft fan, vacuum pump, through multi-stage absorption resolving, realize oxygen, carbonic acid gas to separate from the flue gas after supercooler cooling;
Gas separation unit is connected with pyrolysis installation respectively by carbonic acid gas pipeline, flue gas pipeline; Converged by residue flue gas pipeline and semicoke pipeline and be connected to main pipe rail; Be communicated with Pulverized Fuel Boiler Furnace by oxygen pipeline;
Each device feature in gas separation unit, those skilled in the art can, according to function of the present invention, be used to realize correlation function to prior art means, due to these contents and non-invention emphasis, therefore repeat no more.
Described gas-cleaning installation comprises coal gas dust collector, cooling and e Foerderanlage, sour gas (H
2s, HCH etc.) remove device, alkaline gas (NH
3class) remove device, tar class retrieving arrangement, phenol water disposal device and coal gas storing unit, for purifying in raw gas;
Each device feature in gas-cleaning installation, those skilled in the art can, according to function of the present invention, be used to realize correlation function to prior art means, due to these contents and non-invention emphasis, therefore repeat no more.
In the present invention, described coal dust pipeline is provided with variable valve, to enter the addition of pyrolysis installation for controlling coal dust from Pulverized Coal Bin; Described fluidizing medium pipeline is provided with variable valve, enters the flow of pyrolysis installation internal duct for controlling fluidizing medium.
Compared with prior art, the invention has the beneficial effects as follows:
Technique of the present invention can be used for solving current coal-powder boiler coal resources directly burn, utilization ratio is low, the problem such as seriously polluted, by the pyrolysis of coal, gasification, burning comprehensive utilization, improve coal resources utilization ratio, is one of important measures effectively solving China's energy utilization and problem of environmental pollution.
Device of the present invention transforms on the basis of existing coal-powder boiler, and without the need to scrapping existing installation, economic environmental protection, promotion prospect is had an optimistic view of.
Accompanying drawing explanation
Fig. 1 is overall schematic of the present invention.
Reference numeral in figure is: 1 pyrolysis installation; 2 Pulverized Coal Bin; 3 Pulverized Fuel Boiler Furnaces; 4 gas separation units; 5 gas-cleaning installations.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is described in further detail:
As shown in Figure 1, the problems such as pyrolysis of coal multi-joint-production apparatus comprises pyrolysis installation 1, gas separation unit 4, gas-cleaning installation 5, and the coal resources that can solve current coal-powder boiler directly burn, utilization ratio is low, seriously polluted.
Described pyrolysis installation 1 is divided into inside and outside two portions, the snakelike thin-wall circular tube that inside is made for metallic substance, and arrange under screw, caliber and intercept are determined according to the concrete size of pyrolysis installation 1, ensure abundant heat exchange, inner wall smooth, ensures that coal dust glides smoothly.Internal duct top is communicated with Pulverized Coal Bin 2 by coal dust pipeline, and coal dust pipeline is provided with variable valve, to enter the addition of pyrolysis installation 1 for controlling coal dust from Pulverized Coal Bin 2; Top is communicated with gas-cleaning installation 5 by raw gas house steward; Bottom is communicated with by carbonic acid gas pipeline device 4 separated from the gas, is communicated with raw gas house steward by fluidizing medium pipeline; Bottom is communicated with main pipe rail by semicoke pipeline.Wherein, one end of main pipe rail be semicoke pipeline and residue flue gas pipeline converge mouth, the other end is communicated with Pulverized Fuel Boiler Furnace 3.
Pyrolysis installation 1 outside is the airtight drum ladle that metal or temperature-resistant material are made, and size is determined according to specific requirement, and bottom is connected with Pulverized Fuel Boiler Furnace 3 by high temperature flue gas pipeline, and top is communicated with by flue gas pipeline device 4 separated from the gas.Inner coal dust is that suspension eddy flow moves downward along spiral pipeline under the effect of fluidizing medium, forms adverse current, thus realize countercurrent flow with outside high-temperature flue gas from bottom to top.
Described gas separation unit 4 refers to pressure-swing absorption apparatus oxygen and carbonic acid gas separated from flue gas, specifically comprise dedusting heat sink, dewatering agent, adsorbing tower with molecular sieve, induced draft fan, water cooler, vacuum pump etc., gas separation process is as follows: the flue gas of heat is after dedusting heat sink, under the conveying of induced draft fan, normal temperature is dropped to further through supercooler, enter adsorbing tower with molecular sieve, the adsorptive power utilizing molecular sieve to produce gas with various is different with rate of adsorption, the pressure change changed in adsorption tower is run by the adjustment of air inducing and vacuum pump, through multi-stage absorption resolving, finally isolate the oxygen that purity is higher, carbonic acid gas.Gas separation unit 4 is connected with pyrolysis installation 1 respectively by carbonic acid gas pipeline, flue gas pipeline; Converged by residue flue gas pipeline and semicoke pipeline, be connected with main pipe rail; Be communicated with Pulverized Fuel Boiler Furnace 3 by oxygen pipeline.
Described gas-cleaning installation 5 specifically refers to the technique and the device thereof that the multiple components in raw gas are carried out to effective elimination, specifically comprises coal gas dust collector, cooling and e Foerderanlage, sour gas (H
2s, HCN etc.) remove device, alkaline gas (NH
3class) remove device, tar class retrieving arrangement, phenol water disposal device and coal gas storing unit.
Utilize the pyrolysis of coal multi-production process of pyrolysis of coal multi-joint-production apparatus, comprise the pyrolysis of coal, gas delivery, coal-char combustion, gas purification, specifically comprise the steps:
(1) pyrolysis installation 1 is sent into from Pulverized Coal Bin coal dust out by coal dust pipeline, by the heat exchange between heating carrier, make coal dust carry out pyrolysis at 700 ~ 900 DEG C of temperature, after pyrolysis, obtain semicoke, raw gas, and as the flue gas after heating carrier heat exchange;
(2) semicoke obtained in step (1) is connected with main pipe rail by semicoke pipeline;
(3) by the flue gas that obtains in step (1) by flue gas pipeline, enter gas separation unit 4, be separated into carbonic acid gas, oxygen and residue flue gas; Isolated oxygen is sent into Pulverized Fuel Boiler Furnace 3 by oxygen pipeline and is participated in burning; Isolated carbonic acid gas is sent in the pulverized coal channel of pyrolysis installation 1 as fluidizing medium by carbonic acid gas pipeline, carbonic acid gas can react at 700 ~ 900 DEG C of temperature with the semicoke produced in pyrolysis installation 1, reaction generates carbon monoxide, carbon monoxide can react with the water that volatilizes in coal dust and generate hydrogen, and carbon monoxide and hydrogen are namely as a part of raw gas after pyrolysis; Isolated residue flue gas is mixed with semicoke by residue flue gas pipeline again, and send into Pulverized Fuel Boiler Furnace 3 and participate in burning, burning produces high-temperature flue gas, Boiler Steam and lime-ash, and the temperature of high-temperature flue gas is between 900 ~ 1100 DEG C;
After described high-temperature flue gas is drawn from Pulverized Fuel Boiler Furnace 3 exhaust pass side, send in pyrolysis installation 1, for the heating carrier as pulverized coal pyrolysis in step (1) by high temperature flue gas pipeline;
(4) raw gas obtained in step (1) is drawn one to enter bottom the inner snake pipe of pyrolysis installation 1 as fluidizing medium, all the other raw gas are sent into gas-cleaning installation 5 by raw gas house steward and are purified, and the raw gas after purification is for being processed into the coal gas product of high added value.
Finally, it should be noted that above what enumerate is only specific embodiments of the invention.Obviously, the invention is not restricted to above embodiment, a lot of distortion can also be had.All distortion that those of ordinary skill in the art can directly derive or associate from content disclosed by the invention, all should think protection scope of the present invention.
Claims (5)
1. be applicable to a pyrolysis of coal multi-production process for coal-powder boiler, comprise the pyrolysis of coal, gas delivery, coal-char combustion, gas purification, it is characterized in that, described pyrolysis of coal multi-production process specifically comprises the steps:
(1) pyrolysis installation is sent into from Pulverized Coal Bin coal dust out by coal dust pipeline, by the heat exchange between heating carrier, make coal dust carry out pyrolysis at 700 ~ 900 DEG C of temperature, after pyrolysis, obtain semicoke, raw gas, and as the flue gas after heating carrier heat exchange;
(2) semicoke obtained in step (1) is sent into Pulverized Fuel Boiler Furnace by semicoke pipeline, main pipe rail and participate in burning;
The flue gas obtained in step (1) is sent into gas separation unit by flue gas pipeline, is separated into carbonic acid gas, oxygen and residue flue gas; Isolated oxygen is sent into Pulverized Fuel Boiler Furnace by oxygen pipeline and is participated in burning; Isolated carbonic acid gas is sent in the pulverized coal channel of pyrolysis installation as fluidizing medium by carbonic acid gas pipeline, carbonic acid gas can react at 700 ~ 900 DEG C of temperature with the semicoke produced in pyrolysis installation, reaction generates carbon monoxide, carbon monoxide can react with the water that volatilizes in coal dust and generate hydrogen, and carbon monoxide and hydrogen are namely as a part of raw gas after pyrolysis; Isolated residue flue gas is mixed with semicoke by residue flue gas pipeline again, sends into Pulverized Fuel Boiler Furnace and participates in burning;
In Pulverized Fuel Boiler Furnace, burning produces high-temperature flue gas, Boiler Steam and lime-ash, and the temperature of high-temperature flue gas is between 900 ~ 1100 DEG C, after high-temperature flue gas is drawn from Pulverized Fuel Boiler Furnace exhaust pass side, send in pyrolysis installation, for the heating carrier as pulverized coal pyrolysis in step (1) by high temperature flue gas pipeline;
(3) raw gas obtained in step (1) is drawn one successively by raw gas house steward, fluidizing medium pipeline, enter bottom pyrolysis installation inner snake type pipe as fluidizing medium, all the other raw gas are sent into gas-cleaning installation by raw gas house steward and are purified, and the raw gas after purification is for being processed into the coal gas product of high added value.
2. pyrolysis of coal multi-production process according to claim 1, is characterized in that, in described step (2), the Boiler Steam of generation can be used for generating, heat supply or refrigeration; The lime-ash produced can be used for building resource, industrial chemicals and product, extraction rare metal, produce chemical fertilizer.
3. pyrolysis of coal multi-production process according to claim 1, is characterized in that, the coal gas product obtained in described step (3) can as industrial chemicals, industrial gas or domestic gas.
4. based on the pyrolysis of coal multi-joint-production apparatus of pyrolysis of coal multi-production process described in claim 1, it is characterized in that, comprise pyrolysis installation, gas separation unit, gas-cleaning installation;
Described pyrolysis installation is inside and outside two portions respectively; The inside of pyrolysis installation is snake type pipe, snake type circular tube spiral arranges downwards, the top of snake type pipe is communicated with Pulverized Coal Bin by coal dust pipeline, the top of snake type pipe is communicated with gas-cleaning installation by raw gas house steward, the bottom of snake type pipe is communicated with by carbonic acid gas pipeline device separated from the gas, the bottom of snake type pipe is also communicated with raw gas house steward by fluidizing medium pipeline, and the bottom of snake type pipe is communicated with main pipe rail by semicoke pipeline; Wherein, one end of main pipe rail be semicoke pipeline and residue flue gas pipeline converge mouth, the other end is communicated with Pulverized Fuel Boiler Furnace;
The outside of pyrolysis installation is airtight drum ladle, and the bottom of drum ladle is communicated with Pulverized Fuel Boiler Furnace by high temperature flue gas pipeline, and the top of drum ladle is communicated with by flue gas pipeline device separated from the gas;
Described gas separation unit comprises dedusting heat sink, dewatering agent, adsorbing tower with molecular sieve, induced draft fan, water cooler, vacuum pump, for as pressure-swing absorption apparatus oxygen and carbonic acid gas separated from flue gas; Described dedusting heat sink is used for carrying out dedusting cooling to the heat smoke entering gas separation unit; Described induced draft fan is used for carrying out flue gas conveying; Described water cooler is used for the flue gas through dedusting heat sink to drop to normal temperature; The adsorptive power that described adsorbing tower with molecular sieve can utilize molecular sieve to produce gas with various is different with rate of adsorption, by coordinating with induced draft fan, vacuum pump, through multi-stage absorption resolving, realize oxygen, carbonic acid gas to separate from the flue gas after supercooler cooling;
Gas separation unit is connected with pyrolysis installation respectively by carbonic acid gas pipeline, flue gas pipeline; Converged by residue flue gas pipeline and semicoke pipeline and be connected to main pipe rail; Be communicated with Pulverized Fuel Boiler Furnace by oxygen pipeline;
Described gas-cleaning installation comprises coal gas dust collector, cooling and e Foerderanlage, acid gas removal plants, alkaline gas and removes device, tar class retrieving arrangement, phenol water disposal device and coal gas storing unit, for purifying in raw gas.
5. pyrolysis of coal multi-joint-production apparatus according to claim 4, is characterized in that, described coal dust pipeline is provided with variable valve, to enter the addition of pyrolysis installation for controlling coal dust from Pulverized Coal Bin; Described fluidizing medium pipeline is provided with variable valve, enters the flow of pyrolysis installation internal duct for controlling fluidizing medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510562463.1A CN105062528B (en) | 2015-09-07 | 2015-09-07 | A kind of pyrolysis of coal multi-production process and its device suitable for coal-powder boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510562463.1A CN105062528B (en) | 2015-09-07 | 2015-09-07 | A kind of pyrolysis of coal multi-production process and its device suitable for coal-powder boiler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105062528A true CN105062528A (en) | 2015-11-18 |
| CN105062528B CN105062528B (en) | 2017-09-29 |
Family
ID=54492056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510562463.1A Active CN105062528B (en) | 2015-09-07 | 2015-09-07 | A kind of pyrolysis of coal multi-production process and its device suitable for coal-powder boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105062528B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105779007A (en) * | 2016-03-25 | 2016-07-20 | 北京澳柯清洁煤气工程技术有限公司 | Method for gasifying fly ash with waste heat utilization into coal gas |
| CN107726306A (en) * | 2017-11-01 | 2018-02-23 | 山西大学 | A kind of clean coal clean combustion multi-production process system |
| CN108410489A (en) * | 2017-02-10 | 2018-08-17 | 中国神华能源股份有限公司 | Clean coal production system and production method |
| CN108410488A (en) * | 2017-02-10 | 2018-08-17 | 中国神华能源股份有限公司 | The co-generation system and co-production of power plant and clean coal |
| CN108410487A (en) * | 2017-02-10 | 2018-08-17 | 中国神华能源股份有限公司 | Clean coal polygenerations systeme and Poly-generation method |
| CN108559535A (en) * | 2017-12-29 | 2018-09-21 | 浙江百能科技有限公司 | A kind of Multi-stage heat-exchanging device for pyrolysis of coal high heating value gas and high heating value block coke |
| CN108728145A (en) * | 2018-08-03 | 2018-11-02 | 西安热工研究院有限公司 | A kind of pulverized coal pyrolysis coupling direct generation of electricity system |
| CN109539245A (en) * | 2018-10-30 | 2019-03-29 | 西安交通大学 | A kind of pulverized coal preheating solution decoupling combustion device |
| CN116716131A (en) * | 2023-08-11 | 2023-09-08 | 浙江百能科技有限公司 | High-efficiency multiple removal system and method for raw gas |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56112986A (en) * | 1980-02-08 | 1981-09-05 | Kansai Coke & Chem Co Ltd | Method for preventing explosion in dust collection of coke oven charging cart |
| CN101984019A (en) * | 2010-10-26 | 2011-03-09 | 西峡龙成特种材料有限公司 | Gravity-pushed coal-material decomposing device |
| CN102261647A (en) * | 2011-05-18 | 2011-11-30 | 成都华西工业气体有限公司 | Oxygen enriched combustion and smoke comprehensive treatment process of high-sulfur coal |
| KR101259185B1 (en) * | 2006-12-19 | 2013-04-29 | 주식회사 포스코 | Combustionchamber in a coke oven having coke oven gas induction route |
| CN104342179A (en) * | 2013-08-01 | 2015-02-11 | 陕西煤业化工集团(上海)胜帮化工技术有限公司 | A mixed type coal pyrolysis method |
| CN104762096A (en) * | 2015-03-31 | 2015-07-08 | 长安大学 | Gas guide unit, gas guide device, coal powder pyrolysis device and coal powder pyrolysis method |
| CN205035321U (en) * | 2015-09-07 | 2016-02-17 | 浙江百能科技有限公司 | Pyrolysis of coal poly -generation device suitable for buggy stove |
-
2015
- 2015-09-07 CN CN201510562463.1A patent/CN105062528B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56112986A (en) * | 1980-02-08 | 1981-09-05 | Kansai Coke & Chem Co Ltd | Method for preventing explosion in dust collection of coke oven charging cart |
| KR101259185B1 (en) * | 2006-12-19 | 2013-04-29 | 주식회사 포스코 | Combustionchamber in a coke oven having coke oven gas induction route |
| CN101984019A (en) * | 2010-10-26 | 2011-03-09 | 西峡龙成特种材料有限公司 | Gravity-pushed coal-material decomposing device |
| CN102261647A (en) * | 2011-05-18 | 2011-11-30 | 成都华西工业气体有限公司 | Oxygen enriched combustion and smoke comprehensive treatment process of high-sulfur coal |
| CN104342179A (en) * | 2013-08-01 | 2015-02-11 | 陕西煤业化工集团(上海)胜帮化工技术有限公司 | A mixed type coal pyrolysis method |
| CN104762096A (en) * | 2015-03-31 | 2015-07-08 | 长安大学 | Gas guide unit, gas guide device, coal powder pyrolysis device and coal powder pyrolysis method |
| CN205035321U (en) * | 2015-09-07 | 2016-02-17 | 浙江百能科技有限公司 | Pyrolysis of coal poly -generation device suitable for buggy stove |
Non-Patent Citations (1)
| Title |
|---|
| 高松平等: "CO2对褐煤热解行为的影响", 《燃料化学学报》 * |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105779007A (en) * | 2016-03-25 | 2016-07-20 | 北京澳柯清洁煤气工程技术有限公司 | Method for gasifying fly ash with waste heat utilization into coal gas |
| CN105779007B (en) * | 2016-03-25 | 2019-02-01 | 北京澳柯清洁煤气工程技术有限公司 | The method that the flyash utilized that has surplus heat regasifies into coal gas |
| CN108410489A (en) * | 2017-02-10 | 2018-08-17 | 中国神华能源股份有限公司 | Clean coal production system and production method |
| CN108410488A (en) * | 2017-02-10 | 2018-08-17 | 中国神华能源股份有限公司 | The co-generation system and co-production of power plant and clean coal |
| CN108410487A (en) * | 2017-02-10 | 2018-08-17 | 中国神华能源股份有限公司 | Clean coal polygenerations systeme and Poly-generation method |
| CN107726306A (en) * | 2017-11-01 | 2018-02-23 | 山西大学 | A kind of clean coal clean combustion multi-production process system |
| CN108559535A (en) * | 2017-12-29 | 2018-09-21 | 浙江百能科技有限公司 | A kind of Multi-stage heat-exchanging device for pyrolysis of coal high heating value gas and high heating value block coke |
| CN108559535B (en) * | 2017-12-29 | 2021-12-14 | 浙江百能科技有限公司 | Multi-stage heat exchange device for preparing high-calorific-value coal gas and high-calorific-value lump coke by coal pyrolysis |
| CN108728145A (en) * | 2018-08-03 | 2018-11-02 | 西安热工研究院有限公司 | A kind of pulverized coal pyrolysis coupling direct generation of electricity system |
| CN109539245A (en) * | 2018-10-30 | 2019-03-29 | 西安交通大学 | A kind of pulverized coal preheating solution decoupling combustion device |
| CN116716131A (en) * | 2023-08-11 | 2023-09-08 | 浙江百能科技有限公司 | High-efficiency multiple removal system and method for raw gas |
| CN116716131B (en) * | 2023-08-11 | 2023-11-14 | 浙江百能科技有限公司 | High-efficiency multiple removal system and method for raw gas |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105062528B (en) | 2017-09-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105062528A (en) | Coal-pyrolysis polygeneration process and device applicable to pulverized coal furnace | |
| CN100582197C (en) | Circulating fluidized bed heat-power-gas-tar multi-joint-production apparatus and method | |
| CN101024782B (en) | Dense-phase conveying-bed coal pressurizing gasifying apparatus and method | |
| CN103320175B (en) | High-efficiency clean low-carbon coal graded utilization method and device | |
| CN202203950U (en) | Organic solid waste pyrolyzation and gasification device | |
| CN103740409B (en) | Multi-stage gas distribution high-temperature coal gasification device and method | |
| CN103911179B (en) | Coal gasification method and device | |
| CN105737140B (en) | Cyclone combustion device, combustion equipment and combustion method | |
| CN102258923A (en) | Method for recycling and reusing tail gas of calcium carbide furnace | |
| CN105823074A (en) | Oxygen-enriched and energy-saving combustion system capable of achieving zero emission of nitrogen oxides | |
| CN204786347U (en) | Biomass gasification phase separating combustion furnace | |
| CN105131998A (en) | Biomass and coal medium-low temperature pyrolysis quality improving system and technology thereof | |
| CN205035321U (en) | Pyrolysis of coal poly -generation device suitable for buggy stove | |
| CN104355310B (en) | A kind of combined coal pyrolysis produces the system and method for gac | |
| CN201670735U (en) | Efficient heat-recovering decarburization roasting boiler with low calorific value | |
| CN101666490B (en) | Burning system for directly burning low-volatilization powder carbocoal by using high-temperature air | |
| CN108504396B (en) | Sectional biomass gasification method and special equipment thereof | |
| CN204063013U (en) | A kind of CFBB with TRT | |
| CN205746770U (en) | A kind of CFBB of thermoelectricity gas Poly-generation | |
| CN102533336B (en) | Coal gas production device with two serially-connected furnaces and technology thereof | |
| CN102260538B (en) | Method and device for air-floatation flow-state high-temperature heat-transfer gasification of biomass | |
| CN212238611U (en) | Direct thermal desorption treatment equipment for soil | |
| CN204211493U (en) | A kind of combined coal pyrolysis produces the system of gac | |
| CN204455023U (en) | Gazogene | |
| CN210113269U (en) | Energy-saving, environment-friendly, efficient and quick biomass gasification device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Zhihua Inventor after: Yang Li Inventor after: Cen Kefa Inventor after: Zhou Junhu Inventor after: Liu Jianzhong Inventor after: Liu Maosheng Inventor after: Zhou Zhijun Inventor after: Zhang Yanwei Inventor after: Huang Zhenyu Inventor after: Sun Zhenlong Inventor after: Yang Weijuan Inventor before: Zhou Junhu Inventor before: Liu Maosheng Inventor before: Sun Zhenlong Inventor before: Yang Li |
|
| CB03 | Change of inventor or designer information | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20170508 Address after: 310058 Xihu District, Zhejiang, Yuhang Tong Road, No. 866, No. Applicant after: Zhejiang University Applicant after: Zhejiang Pyneo Technology Co., Ltd. Address before: 310007 Xihu District, Hangzhou, Wensanlu Road, China, No., Times Square, block C, layer 2, layer 478 Applicant before: Zhejiang Pyneo Technology Co., Ltd. |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |