CN104531178A - Water jet closed coke quenching system - Google Patents
Water jet closed coke quenching system Download PDFInfo
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- CN104531178A CN104531178A CN201510029990.6A CN201510029990A CN104531178A CN 104531178 A CN104531178 A CN 104531178A CN 201510029990 A CN201510029990 A CN 201510029990A CN 104531178 A CN104531178 A CN 104531178A
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- coke breeze
- gas
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- 239000000571 coke Substances 0.000 title claims abstract description 108
- 238000010791 quenching Methods 0.000 title claims abstract description 75
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 65
- 230000000171 quenching effect Effects 0.000 title claims abstract description 52
- 238000009833 condensation Methods 0.000 claims abstract description 67
- 230000005494 condensation Effects 0.000 claims abstract description 67
- 238000011084 recovery Methods 0.000 claims abstract description 35
- 239000007788 liquid Substances 0.000 claims abstract description 19
- 238000010521 absorption reaction Methods 0.000 claims abstract description 17
- 238000001556 precipitation Methods 0.000 claims abstract description 11
- 239000007921 spray Substances 0.000 claims description 92
- 238000002347 injection Methods 0.000 claims description 18
- 239000007924 injection Substances 0.000 claims description 18
- 238000004140 cleaning Methods 0.000 claims description 15
- 238000003860 storage Methods 0.000 claims description 12
- 239000012530 fluid Substances 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 9
- 238000009825 accumulation Methods 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 8
- 239000012528 membrane Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 23
- 230000008569 process Effects 0.000 abstract description 14
- 238000005507 spraying Methods 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 61
- 239000000428 dust Substances 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 239000000796 flavoring agent Substances 0.000 description 2
- 235000019634 flavors Nutrition 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000013341 scale-up Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000008234 soft water Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B39/00—Cooling or quenching coke
- C10B39/04—Wet quenching
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Industrial Gases (AREA)
Abstract
The invention discloses a water jet closed coke quenching system. The water jet closed coke quenching system comprises a coke quenching tower, a steam condensation and absorption system, a non-condensable gas recovery system and a fine coke precipitation and recovery system, wherein the steam condensation and absorption system comprises a steam condensation tower, a gas-collecting hood, a communicating pipe, a jet device and a spraying device; the gas-collecting hood is arranged at the top of the coke quenching tower, the communicating pipe is connected between the steam condensation tower and the gas-collecting hood, the jet device is arranged in the communicating pipe, the spraying device is arranged at the top of the steam condensation tower, and the steam condensation tower is communicated with the fine coke precipitation and recovery system through a first pipeline; and the non-condensable gas recovery system comprises a gas-liquid separator, a non-condensable gas recovery device and a jet flow device, the non-condensable gas recovery device is communicated with the steam condensation tower through a non-condensable gas guide pipe, the lower part of the non-condensable gas recovery device is communicated to the gas-liquid separator, and the jet flow device is arranged on the non-condensable gas recovery device and is used for jetting flow into the non-condensable gas recovery device. The water jet closed coke quenching system disclosed by the invention has the advantages of simple process flow and low capital construction investment, and can solve non-condensable gas produced by wet coke quenching and eliminate atmospheric pollution.
Description
Technical field
The present invention relates to the closed quench system of a kind of water flow jet, utilize venturi principle to make whole quench system produce negative pressure, belong to wet quenching technical field.
Background technology
Traditional coke quenching method is also known as open type wet quenching, and the quenching car that red Jiao is housed is through water-spraying control in coke quenching tower, and part water is vaporized, and carries a large amount of dust, water droplet and obnoxious flavour etc. secretly and enter air from coke quenching tower top.At present, the independent coke-oven plant of China's major part adopts this coke quenching method.Why this method is used widely is because technological process is simple, but there are two fatal shortcomings, and one is that the sensible heat of red Jiao can not be recycled; Two is cause severe contamination to air.And dry coke quenching exists the problem that high, the energy consumption of investment own is high, complex process, technical difficulty are high, large-scale promotion is also unrealistic.In recent years, along with people are to the pay attention to day by day of energy saving standard, changing traditional coke quenching method has been imperative.Therefore a faced subject matter is that how to solve initial cost few and can eliminate the quenching mode of topsoil.
Ren Guoping is in " conventional wet quenching technological transformation is the application pre-test of environmental protection quenching and waste heat recovery thereof " (" Coal Chemical Industry " supplementary issue in July, 2013,210-212 page) in disclose one and " to put on shoes and wear hats " technological transformation of formula: be first original tubular straight-line coke quenching tower is changed into sealed coke quenching tower (this is " attaching the names of pre-determined candidates "), originally the waste gas to airborne release, refuse are all collected, the coke quenching steam latent heat reclaimed can be used for heating boiler soft water simultaneously, improve boiler efficiency; The inflammable gass such as the part CO, the H2 that secondly produce in quenching process can be collected in gas storage holder and be used; The coke breeze periodic cleaning trapped is collected, these two can be referred to as " wearing boots ", all can additional income again.The problem of the method is to adopt Zigzag type column plate and settling vessel collected both dust, designs more complicated; And in order to avoid producing negative pressure, also have employed check valve and magnetic valve especially to avoid the negative pressure accident caused thus.And the method does not consider following problem: 1, in quench system if do not produced negative pressure, the steam that fecund is raw in quenching process can only overflow bottom coke quenching tower; If 2, carry out condensation at coke quenching tower top interchanger, 9 tons of steam are produced in 15 minutes, and total condensation is got off, large-scale heat exchange group must be needed to realize, however large-scale interchanger tower top how to install be actual field construction in insoluble problem; 3, contain a large amount of coke powders in steam, as long as the character of coke powder is wall built-up, be difficult to cleaning, therefore the coke powder how cleared up in interchanger is problem demanding prompt solution; 4, effectively utilize for the energy and less can the demand such as source emission, for the recycling of the water-gas of the hot water after heat exchange and collection, be the problem needing in producing to solve; 5, for effective control of oxygen content in water-gas, be also the problem needing during this area produces to solve.
Summary of the invention
In order to solve the problem, the invention provides the closed quench system of a kind of water flow jet, its technological process is simple, initial cost is few, can eliminate topsoil, and partly can utilize waste heat in quenching process, and can collect a small amount of quenching coal gas.
According to an aspect of the present invention, which provide the closed quench system of a kind of water flow jet, the closed quench system of a kind of water flow jet, comprise: coke quenching tower, vapor condensation absorption system, non-condensable gas recovery system and coke breeze precipitation recovery system, wherein: described vapor condensation absorption system comprises vapor condensation tower, gas skirt, communicating pipe, jet apparatus and spray equipment; The top of described coke quenching tower is located at by described gas skirt, between the top being connected to described vapor condensation tower described communicating pipe and described gas skirt, described jet apparatus to be arranged in described communicating pipe and to the direction jet water course of described vapor condensation tower, described spray equipment is arranged at the top of described vapor condensation tower and sprays in described vapor condensation tower, and the bottom of described vapor condensation tower is precipitated recovery system by the first pipeline with described coke breeze and is communicated with;
Described non-condensable gas recovery system at least comprises gas-liquid separator, the non-condensable gas retrieving arrangement be made up of the many Venturi tubes be set up in parallel and fluidic device, the top of described non-condensable gas retrieving arrangement is communicated with the top of described vapor condensation tower by non-condensable gas airway, the bottom of described non-condensable gas retrieving arrangement is communicated to described gas-liquid separator, described fluidic device be arranged at described non-condensable gas retrieving arrangement top and to jet in described non-condensable gas retrieving arrangement.
Preferably, described communicating pipe is by extremely downward-sloping 30 ° ~ 45 ° settings of described vapor condensation tower of described gas skirt.
Preferably, described jet apparatus comprises many injection arms of the radial array along described communicating pipe, spray described in every root arm is provided with multiple for ejecting water column, water column periphery scatter formed vaporific, and form the first shower nozzle of water membrane at cloudy appearance, to make to form negative pressure in communicating pipe.
Preferably, the injection direction of described first shower nozzle is consistent with the axial direction due of described communicating pipe.
Preferably, described vapor condensation absorption system also comprises the washing unit for cleaning described injection arm and the first shower nozzle.
Preferably, described washing unit comprises cleaning shower nozzle and two wash tubes be oppositely arranged, and the position of two corresponding described injection arms of described wash tube arranges described cleaning shower nozzle respectively.
Preferably, the link position of described non-condensable gas airway and described vapor condensation tower is higher than the link position of described communicating pipe and described vapor condensation tower; The below of described spray equipment arranges screen, and described screen is all in the inside of described non-condensable gas airway and the described vapor condensation tower between communicating pipe.
Preferably, described spray equipment comprises spray house steward, many spray arms and the second shower nozzle, described spray house steward sprays house steward be communicated with described, many described spray arms are all connected on described spray house steward, described spray arm is 15-40 root, sprays on arm and arrange 10-30 described second shower nozzle described in every root.
Preferably, described spray arm is connected on described spray house steward removably, and described second shower nozzle is connected on described spray arm removably.
Preferably, described vapor condensation absorption system also comprises the second pipeline and the first recycle pump be located on described second pipeline and First Heat Exchanger, one end of described second pipeline extend in described coke breeze precipitation recovery system, and the other end is communicated with the spray house steward of spray equipment.
Preferably, described jet apparatus also comprises injection house steward, sprays arm and be all connected to described injection house steward described in every root, wherein said injection house steward is provided with 15-40 root and sprays arm, and every root sprays on arm and is provided with 10-30 described first shower nozzle.
Preferably, the injection house steward of described jet apparatus and the spray house steward of described spray equipment are by the 3rd pipeline connection.
Preferably, described spray arm is connected on described spray house steward removably, and described second shower nozzle is connected on described spray arm removably.
Preferably, described non-condensable gas recovery system also comprises gas storage holder, the 4th pipeline, the 5th pipeline and the second recycle pump be located on described 4th pipeline and the second interchanger, one end of described 4th pipeline is communicated with the bottom of described gas-liquid separator, and the other end is communicated with described fluidic device; The upper end of described gas-liquid separator and described gas storage holder are collected into described gas storage holder by described 5th pipeline connection to make non-condensable gas.
Preferably, described 5th pipeline is provided with motor-driven control valve to control tolerance size.
Preferably, in the control valve of described motor-driven control valve and described spray equipment and coke quenching tower, the control valve of flusher carries out chain.
Preferably, coke breeze precipitation recovery system comprises coke breeze settling tank and screw rod crane, arranges dividing plate so that described coke breeze settling tank is divided into the fluid zone on top and the coke breeze district of bottom in described coke breeze settling tank; Described screw rod crane is obliquely installed in described coke breeze settling tank, and its upper end is stretched out outside described coke breeze settling tank.
Preferably, described fluid zone is connected on described 4th pipeline by the 6th pipeline.
Preferably, described coke breeze settling tank has sealing cover, and it has three through holes being respectively used to pass through with making the first pipeline, the second pipeline and the 6th line seal, and described first pipeline, the second pipeline and the 6th pipeline all stretch to described fluid zone; Described sealing cover also offers the opening for making described screw rod crane stretch out.
Preferably, the bottom of described coke breeze settling tank is provided with slope, described slope is provided with the scraper plate scraped up and down on described slope coke breeze to be scraped the coke breeze accumulation region to described coke breeze settling tank, the opening for feed of described screw rod crane is positioned at described coke breeze accumulation region.
Preferably, in described gas storage holder, non-condensable gas is after supercharging, as the fuel gas of tube furnace.
Preferably, the heat exchange medium of described second interchanger is used for refrigeration system or heating system.
The closed quench system of water flow jet of the present invention has the beneficial effect of following several aspect:
A () can keep original wet quenching tower constant, after original wet quenching tower, only increase vapor condensation absorption system, non-condensable gas recovery system and coke breeze precipitation recovery system, simpler than dry coke quenching technological process, initial cost is little.
B () system of the present invention can solve the non-condensable gas produced in wet quenching process, eliminate topsoil.
C () system of the present invention can be shared out bonus burnt sensible heat by recoverer, and give the direction of utilization.
D the vapor condensation absorption system in () the present invention adopts jet apparatus and spray equipment to be operated by current direct freezing method, substantially reduce the volume of vapor condensation tower, expense of reducing investment outlay.
E the vapor condensation absorption system in () the present invention and non-condensable gas recovery system all adopt venturi principle as the system producing negative pressure, to installing, pipeline section requirement is low, crushing is little, can extract high containing humid gas and various dirty fluid.
Accompanying drawing explanation
Fig. 1 is the structural representation of the closed quench system of water flow jet of the present invention;
Fig. 2 is the structural representation of jet apparatus and washing unit;
Fig. 3 is the structural representation of coke breeze settling tank.
Description of reference numerals
10: coke quenching tower
21: gas skirt 22: jet apparatus
23: communicating pipe 24: vapor condensation tower
25: spray equipment 26: screen
27: the first recycle pumps 28: First Heat Exchanger
31: non-condensable gas airway 32: fluidic device
33: non-condensable gas retrieving arrangement 34: gas-liquid separator
35: gas storage holder 36: the second recycle pump
37: the second interchanger 38: motor-driven control valve
41: coke breeze settling tank 42: screw rod crane
43: dividing plate 44: slope
45: scraper plate 46: sealing cover
51: the first pipeline 52: the second pipelines
53: the three pipeline 54: the four pipelines
55: the five pipeline 56: the six pipelines
201: spray house steward 202: spray arm
203: the first shower nozzles 301: wash tube
302: cleaning shower nozzle
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail, but not as a limitation of the invention.
As shown in Figure 1, the closed quench system of water flow jet of embodiments of the invention comprises coke quenching tower 10, vapor condensation absorption system, non-condensable gas recovery system and coke breeze precipitation recovery system, and wherein vapor condensation absorption system comprises vapor condensation tower 24, gas skirt 21, communicating pipe 23, jet apparatus 22 and spray equipment 25, gas skirt 21 is enclosed and is arranged on the top of coke quenching tower 10, and with connecting gas skirt 21 and vapor condensation tower 24 communicating pipe 23, downward-sloping 30 ° ~ about 45 ° of described communicating pipe 23, thus water vapour will be comprised from coke quenching tower 10, the dust of non-condensable gas and a large amount of dust imports communicating pipe 23 by this gas skirt 21, described jet apparatus 22 is provided with in the ingress (communicating pipe 23 is defined as ingress with the junction of gas skirt 21) of described communicating pipe 23, with further reference to Fig. 2, described jet apparatus 22 includes and sprays house steward 201, some rows spray arm 202, spraying arm 202 is arranged on injection house steward 201, spray on arm 202 and first shower nozzle 203 (the first shower nozzle 203 is efficient shower nozzle) is housed, and the direction of jet water course is parallel with described communicating pipe 23, water column periphery scatter formed vaporific, form water membrane at cloudy appearance simultaneously, thus make the water vapor portion condensation in above-mentioned dust.Adopt acting as when (1) sprays water of above-mentioned first shower nozzle 203 can produce tiny structure within communicating pipe 23, the resistance of steam can be reduced; (2) within communicating pipe 23, carry out spraying cooling, water vapor partial condensation can be made.And described jet apparatus 22 needs to be easy to dismounting and is convenient to maintenance.
In addition, coke breeze is had to deposit in order to prevent the first shower nozzle 203 place in described jet apparatus 22, vapor condensation absorption system also comprises washing unit, washing unit comprises wash tube 301 and cleaning shower nozzle 302, described washing unit is batch operation, thus the dust of attachment on jet apparatus 22 described in routine cleaning.In the present embodiment, as shown in Figure 2, wash tube 301 is two of being oppositely arranged, and the positions that two wash tube 301 correspondences spray arms 202 arrange cleaning shower nozzle 302 respectively, and namely at the two ends that every root sprays arm 202, correspondence arranges a cleaning shower nozzle 302 respectively.
The internal structure of the vapor condensation tower 24 of the vapor condensation absorption system 20 in the present embodiment is specially: vapor condensation tower 24 top is provided with spray equipment 25, screen 26 is provided with between the exit end that communicating pipe 23 is connected with vapor condensation tower 24 below described spray equipment 25, between the exit end that the exit end of described spray equipment 25 and screen 26 communicating pipe 23 all on vapor condensation tower 24 and non-condensable gas airway 31 are connected with vapor condensation tower 24, described spray equipment 25 comprises spray house steward, many spray arms and the second shower nozzle, described spray house steward sprays house steward be communicated with described, many described spray arms are all connected to described spray house steward above (due to spray house steward, what the annexation of spray arm and the second shower nozzle and structure were easily imagined goes out, therefore do not indicate in figure), described spray arm is 15-40 root, spray described in every root on arm and 10-30 described second shower nozzle (the second shower nozzle is also efficient shower nozzle) is set.For the ease of cleaning and replacing, described spray arm is connected on described spray house steward removably, and described second shower nozzle is connected on described spray arm removably.Second shower nozzle ejection water column periphery scatter formed vaporific, form water membrane at cloudy appearance simultaneously, after uncooled water vapour enters vapor condensation tower 24, again sprayed condensation by the current that spray equipment 25 sprays, and through screen 26, uniform fluid flow is distributed, be conducive to water vapour fully to contact with phlegma, the material of screen 26 preferably can have the material of superior acidproof, alkaline-resisting, corrosion resistance nature.Phlegma containing coke breeze flows into coke breeze settling tank 41 through the first pipeline 51 at the bottom of tower, and non-condensable gas then enters non-condensable gas recovery system 30 from vapor condensation tower 24 top through non-condensable gas airway 31.
The non-condensable gas recovery system 30 of the present embodiment comprises non-condensable gas retrieving arrangement 33, it utilizes venturi principle, be made up of some Venturi tubes arranged side by side, at the top of non-condensable gas retrieving arrangement 33, fluidic device 32 is set, from in the water flow jet process of fluidic device 32, in non-condensable gas retrieving arrangement 33, form negative pressure, thus non-condensable gas to be sucked in Venturi tube and to enter gas-liquid separator 34 with current.Wherein, in order to make liquid (water of condensation) recycle of reclaiming in gas-liquid separator 34, gas-liquid separator 34 is connected with fluidic device 32 by the 4th pipeline 54,4th pipeline 54 is arranged the second interchanger 37 and the second recycle pump 36, after water of condensation in gas-liquid separator 34 is lowered the temperature by the second interchanger 37, as the water source of fluidic device 32.Can enter in coke breeze settling tank 41 when the water level in gas-liquid separator 34 is too high.In addition, the 5th pipeline 55 is passed through (because the medium for deriving is gas in gas-liquid separator 34 top, therefore the 5th pipeline 55 can adopt airway) be directly connected with gas storage holder 35, and motor-driven control valve 38 can be set on the 5th pipeline 55, the control of tolerance size is carried out with motor-driven control valve 38.Motor-driven control valve 38 carries out chain with the control valve (not shown) of described spray equipment 25 and the control valve (not shown) of coke quenching tower flusher.After non-condensable gas enters gas storage holder 35, can being delivered directly to produce the cleaning section in workshop, or non-condensable gas in gas storage holder 35 after supercharging, can be used as the fuel gas of tube furnace.By such non-condensable gas recovery system 30, the non-condensable gas produced in wet quenching process can be recovered process, thus avoids discharging in air.
As shown in Figure 3, coke breeze precipitation recovery system 40 comprises coke breeze settling tank 41, and described coke breeze settling tank 41 opening part arranges sealing cover 46 with sealing.Slope 44 is arranged at bottom, described slope 44 is high-end in the position of the first pipeline 51 of corresponding vapor condensation tower 24, the other end is low side, described slope 44 there is scraper plate 45, phlegma containing coke breeze directly passes into coke breeze settling tank 41 bottom via the first pipeline 51, is precipitated by coke breeze through coke breeze settling tank 41, with scraper plate 45, coke breeze is scraped to low side from the high-end of coke breeze settling tank 41, coke breeze is gathered, forms coke breeze accumulation region.This coke breeze accumulation region can be a certain FX bottom coke breeze settling tank 41, also can be lower than coke breeze settling tank 41 bottom region, specified channel portion.Shown in composition graphs 3, in coke breeze settling tank 41, install a screw rod crane 42, the feeding end of screw rod crane 42 is positioned at the coke breeze accumulation region of coke breeze settling tank 41.The region, groove portion that the feeding end (i.e. the lower end of the crane of screw rod shown in Fig. 3 42) that the coke breeze accumulation region of the present embodiment is screw rod crane 42 probes into.The discharge end correspondence of screw rod crane 42 arranges endless belt conveyor (not shown), thus utilizes screw rod crane 42 that the coke breeze in coke breeze settling tank 41 is delivered on endless belt conveyor.Replace coke breeze grab bucket with screw rod crane 42 and under airtight state, coke breeze can be taken out from coke breeze settling tank 41.Dividing plate 43 is installed in coke breeze settling tank 41 middle and upper part, makes the formation fluid zone, top of dividing plate 43, and the below of dividing plate 43 forms coke breeze district, thus more effectively impels coke breeze to precipitate, and prevention coke breeze is brought in the clear water on dividing plate 43 upper strata.In order to the clear water on recycle coke breeze settling tank 41 upper strata, can the second pipeline 52 be set between coke breeze settling tank 41 and spray equipment 25, second pipeline 52 is arranged the first recycle pump 27 and First Heat Exchanger 28, pressurizeed through the first recycle pump 27 by the second pipeline 52, and carry out heat exchange by First Heat Exchanger 28, water temperature after heat exchange should control at 35 DEG C ~ 45 DEG C, deliver to vapor condensation tower 24 top spray equipment 25 and communicating pipe 23 ingress jet apparatus 22.The injection house steward 201 of the jet apparatus 22 in the present embodiment is communicated with by the 3rd pipeline 54 with the spray house steward of spray equipment 25.Heat after First Heat Exchanger 28 heat exchange is convertible into other energy storage or use, such as, utilize remaining hot water refrigeration and winter heating etc.The water that whole quench system consumes, on vapor condensation tower 24, available middle water supplements.
In addition, sealing cover 46 has three through hole (not shown)s being respectively used to the first pipeline 51, second pipeline 52 and the 6th pipeline 56 are sealingly passed through, and the first pipeline 51, second pipeline 52 and the 6th pipeline 56 all stretch to described fluid zone; Described sealing cover also offers the opening for making screw rod crane 42 stretch out.
EXPERIMENTAL EXAMPLE
Adopt JNDK43-99D Formed Coke Furnace, 400,000 tons, coke is produced in design per year, traditional quenching mode of what quenching mode adopted is spray cooling, natural quenching.Following data in JNDK43-99D Formed Coke Furnace, carry out detection draw:
(1) the quenching time is 155 seconds, vapor temperature average out to 100 DEG C, and interval time of coming out of the stove is 15 minutes; Wet quenching per car loads red burnt 18 tons, and 1 ton of red Jiao is by consumption 0.51 ton of water, and produce quantity of steam 9t/ car, generation quantity of steam per hour is 36 tons; The sensible heat that one ton of red Jiao takes out of is 1.465GJ, and 400,000 tons is 58.6 ten thousand GJ, and Exposure degree rate is that 50%, one year heat energy approximately reclaims 29.3 ten thousand GJ.
(2) be 10m by detecting analytical calculation yield such as CO in quenching process
3/ ton is burnt, per hourly produces non-condensable gas 720m
3(in fact 720m
3the working lipe that non-condensable gas produces is 12 minutes), calculate with 2 times of scale-up factors, non-condensable gas recovery system treatment capacity can reach 7200m
3/ hour, the vacuum tightness that non-condensable gas recovery system produces is 40KPa, and design Venturi tube quantity is 5, Venturi tube water inlet aperture 100mm, fluidic device water flow pressure 0.5MPa, vapour-liquid ratio are 6:1, and the flow of recycle pump is 1200 tons/hour.This recyclable non-condensable gas 4,000,000 m
3/ year
(3) 1 tons of 100 DEG C of steam are after condensation, and temperature is down to 60 DEG C of needs, 6 tons of water, water of condensation needed for the quantity of steam produced for 1 hour is 216 tons of water (working lipe of the cool solidifying water of actual consumption is 12 minutes), calculate with 1.5 times of scale-up factors, the flow type selecting of recycle pump is 1800 ~ 2000 tons/hour and is advisable, and wherein each sprinkler pressure is 0.3MPa.
(4) recyclable 0.5*40=20 ten thousand tons of water/years, coke per ton can reclaim coke powder 1.7Kg more, 1 year recyclable 680 tons.
In addition, according to above-mentioned technique, whole coke quenching tower is closed, no longer includes a large amount of discharges of dust and obnoxious flavour, and due to process modification be based on original wet quenching technique, there is not the problem that capital construction cost is excessive, technical difficulty is too high yet.
Certainly, the above is the preferred embodiment of the present invention, should be understood that; for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (12)
1. the closed quench system of water flow jet, comprise: coke quenching tower, vapor condensation absorption system, non-condensable gas recovery system and coke breeze precipitation recovery system, wherein: described vapor condensation absorption system comprises vapor condensation tower, gas skirt, communicating pipe, jet apparatus and spray equipment; The top of described coke quenching tower is located at by described gas skirt, between the top being connected to described vapor condensation tower described communicating pipe and described gas skirt, described jet apparatus to be arranged in described communicating pipe and to the direction jet water course of described vapor condensation tower, described spray equipment is arranged at the top of described vapor condensation tower and sprays in described vapor condensation tower, and the bottom of described vapor condensation tower is precipitated recovery system by the first pipeline with described coke breeze and is communicated with;
Described non-condensable gas recovery system at least comprises gas-liquid separator, the non-condensable gas retrieving arrangement be made up of the many Venturi tubes be set up in parallel and fluidic device, the top of described non-condensable gas retrieving arrangement is communicated with the top of described vapor condensation tower by non-condensable gas airway, the bottom of described non-condensable gas retrieving arrangement is communicated to described gas-liquid separator, described fluidic device be arranged at described non-condensable gas retrieving arrangement top and to jet in described non-condensable gas retrieving arrangement.
2. the closed quench system of water flow jet according to claim 1, wherein, described communicating pipe is by extremely downward-sloping 30 ° ~ 45 ° settings of described vapor condensation tower of described gas skirt.
3. the closed quench system of water flow jet according to claim 2, wherein, described jet apparatus comprises many injection arms of the radial array along described communicating pipe, spray described in every root arm is provided with multiple for ejecting water column, scattering and formed vaporific in water column periphery, and forms the first shower nozzle of water membrane, to make to form negative pressure in communicating pipe at cloudy appearance, wherein, the injection direction of described first shower nozzle is consistent with the axial direction due of described communicating pipe.
4. the closed quench system of water flow jet according to claim 3, wherein, described vapor condensation absorption system also comprises the washing unit for cleaning described injection arm and the first shower nozzle, described washing unit comprises cleaning shower nozzle and two wash tubes be oppositely arranged, and the position of two corresponding described injection arms of described wash tube arranges described cleaning shower nozzle respectively.
5. the closed quench system of water flow jet according to claim 3, wherein, the link position of described non-condensable gas airway and described vapor condensation tower is higher than the link position of described communicating pipe and described vapor condensation tower; The below of described spray equipment arranges screen, described screen is all in the inside of described non-condensable gas airway and the described vapor condensation tower between communicating pipe, described spray equipment comprises spray house steward, many spray arms and the second shower nozzle, many described spray arms are all connected on described spray house steward, described spray arm is 15-40 root, sprays on arm and arrange 10-30 described second shower nozzle described in every root.
6. the closed quench system of water flow jet according to claim 5, wherein, described spray arm is connected on described spray house steward removably, and described second shower nozzle is connected on described spray arm removably.
7. the closed quench system of water flow jet according to claim 5, wherein, described vapor condensation absorption system also comprises the second pipeline and the first recycle pump be located on described second pipeline and First Heat Exchanger, one end of described second pipeline extend in described coke breeze precipitation recovery system, and the other end is communicated with the spray house steward of spray equipment; Described jet apparatus also comprises injection house steward, described spray house steward sprays house steward be communicated with described, spray arm described in every root and be all connected to described injection house steward, wherein said injection house steward is provided with 15-40 root and sprays arm, every root sprays on arm and is provided with 10-30 described first shower nozzle; Described spray arm is connected on described spray house steward removably, and described second shower nozzle is connected on described spray arm removably.
8. the closed quench system of water flow jet according to claim 7, wherein, the injection house steward of described jet apparatus and the spray house steward of described spray equipment are by the 3rd pipeline connection, described non-condensable gas recovery system also comprises gas storage holder, the 4th pipeline, the 5th pipeline and the second recycle pump be located on described 4th pipeline and the second interchanger, one end of described 4th pipeline is communicated with the bottom of described gas-liquid separator, and the other end is communicated with described fluidic device; The upper end of described gas-liquid separator and described gas storage holder are collected into described gas storage holder by described 5th pipeline connection to make non-condensable gas.
9. the closed quench system of water flow jet according to claim 8, wherein, described 5th pipeline is provided with motor-driven control valve to control tolerance size, in the control valve of described motor-driven control valve and described spray equipment and coke quenching tower, the control valve of flusher carries out chain.
10. the closed quench system of water flow jet according to claim 1, wherein, coke breeze precipitation recovery system comprises coke breeze settling tank and screw rod crane, arranges dividing plate so that described coke breeze settling tank is divided into the fluid zone on top and the coke breeze district of bottom in described coke breeze settling tank; Described screw rod crane is obliquely installed in described coke breeze settling tank, and its upper end is stretched out outside described coke breeze settling tank.
The closed quench system of 11. water flow jet according to claim 10, wherein, described fluid zone is connected on described 4th pipeline by the 6th pipeline; Described coke breeze settling tank has sealing cover, and it has three through holes being respectively used to pass through with making the first pipeline, the second pipeline and the 6th line seal, and described first pipeline, the second pipeline and the 6th pipeline all stretch to described fluid zone; Described sealing cover also offers the opening for making described screw rod crane stretch out.
The closed quench system of 12. water flow jet according to claim 10, wherein, the bottom of described coke breeze settling tank is provided with slope, described slope is provided with the scraper plate scraped up and down on described slope coke breeze to be scraped the coke breeze accumulation region to described coke breeze settling tank, the opening for feed of described screw rod crane is positioned at described coke breeze accumulation region.
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| CN201510029990.6A CN104531178B (en) | 2015-01-21 | 2015-01-21 | Water jet closed coke quenching system |
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| CN201510029990.6A CN104531178B (en) | 2015-01-21 | 2015-01-21 | Water jet closed coke quenching system |
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| CN104531178B CN104531178B (en) | 2017-02-22 |
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| CN104531178B (en) | 2017-02-22 |
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