CN102304368A - Process device for modifying wet quenched coke into dry quenched coke - Google Patents
Process device for modifying wet quenched coke into dry quenched coke Download PDFInfo
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- CN102304368A CN102304368A CN201110230932A CN201110230932A CN102304368A CN 102304368 A CN102304368 A CN 102304368A CN 201110230932 A CN201110230932 A CN 201110230932A CN 201110230932 A CN201110230932 A CN 201110230932A CN 102304368 A CN102304368 A CN 102304368A
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Abstract
The invention provides a process device for modifying wet quenched coke into dry quenched coke and relates to coke production equipment, solving the problems that the existing coke dry quenching process has the disadvantages that investment is large, equipment is difficultly manufactured, operation time is long and operation cost is high. The process device is characterized in that a red-hot coke channel is arranged at one side of a coke quenching car and communicated with a cold coke box, the cold coke box is internally provided with a cold coke channel which is isolated by a cooling water cavity and obliquely arranged, and the outlet of the cold coke channel is joined with a belt conveyer; the cooling water cavity is communicated with a water inlet pipe from a boiler; the side surface of the cold coke box is provided with a nitrogen circulating channel from a nitrogen-making machine, and the top of the cold coke box is provided with a high-temperature nitrogen channel; a heat exchanger is arranged under the cold coke box, the water inlet pipe of the heat exchanger is communicated with a cooling water return pipe, and the water outlet pipe of the heat exchanger is communicated with a boiler deaerator; and the heat exchanger is communicated with the high-temperature nitrogen channel and a dust catcher, and the dust catcher is communicated with the high-temperature nitrogen channel. The process device is used for modification of wet quenched coke, investment is small, operation cost is low, and all products can be produced in China.
Description
Technical field
The present invention relates to produce the equipment of coke, particularly coke quenching device.
Background technology
China's steel industry developed rapidly in recent years, and the expansion of Iron and Steel Production scale causes the demand of STRENGTH ON COKE to increase fast.Having energy-saving and cost-reducing, as to reduce environmental pollution, raising coke quality Dry Quenching Technology and meet national industrial policies, is the new technology project of national encourage growth.
The conventional wet quenching adopts water spray directly to extinguish red-hot red Jiao; Not only heat energy can not reclaim; And ton is burnt produces 0.3～0.4 ton of water vapor and carry objectionable impuritiess such as volume of smoke and a small amount of sulfide secretly and diffuse, both severe contamination atmosphere and surrounding environment, also a large amount of simultaneously water consumptions.Now the stage, international and domestic most coke-oven plants still adopt wet quenching technology, and especially developing country's wet quenching is more general.Dry coke quenching then is that red Jiao who will leave coking chamber places an airtight relatively system, cools off with contacting with relative movement of red Jiao through the rare gas element in the system.Adopt Dry Quenching Technology to help recycling residual heat resources, help improving coke quality, help reducing Air Pollutant Emission, help practicing thrift the quenching water.
China's Dry Quenching Technology is that Baosteel's First-stage Construction in 1986 is introduced from Japan and begun to use, and PVG producer gas plant, Ji steel, Shoudu Iron and Steel Co etc. have been introduced Russia, Ukraine, Japanese Dry Quenching Technology again subsequently.Dry Quenching Technology develops so far, though different apparatus-form occurred, typical process flow is similar, and is just different at aspects such as dress Jiao, coke discharging, heat recuperation mode, recycle gas dedustings.
The dry quenching(of coke) technology is the great faster energy-conserving and emission-cutting technology of China's development; Be confirmed as " Chinese coking industry technical development guide project "; Coking industry will be an important task with the low charcoal economy of development circulation, and the response national industrial policies promote the coking level with dry coke quenching technology.
Make a general survey of domestic existing dry coke quenching process unit; Comprise most external dry coke quenching process units; Adorn burnt technology and be provided with tall and big lifting transportation derrick, red Jiao of burnt jar of packing into packs in the quenching stove through level transportation, vertical-lift, the mode of transport that moves horizontally, vertically transfer.The dry coke quenching process unit of prior art exists that investment is big, device fabrication is difficult, long operational time, problem that working cost is high.
Summary of the invention
The objective of the invention is to overcome the shortcoming of prior art, provide a kind of coke coke wet quenching to be transformed into the process unit of dry coke quenching, solve that existing dry coke quenching technology investment is big, device fabrication is difficult, long operational time, problem that working cost is high.
The present invention realizes through following technical scheme:
A kind of coke coke wet quenching is transformed into the process unit of dry coke quenching, comprising: be arranged on the lateral coke guide of coke oven, the quenching car that joins with coke guide, and ground station for dust removal, rotary conveyor, boiler, Nitrogen plant; It is characterized in that: red burnt passage is set is communicated with cold burnt case in said quenching car burnt platform one side of drying in the air; The cold burnt passage that useful cooling water cavity is isolated, is obliquely installed in the said cold burnt case; Said cold burnt channel exit is provided with shield cap; The pipeline of said shield cap is communicated with ground station for dust removal, and the below of said cold burnt channel exit is connected with rotary conveyor; Said cooling water cavity by the top cover water jacket and all around water jacket constitute, said around water jacket be communicated with cooling water inlet pipe from boiler, said top cover water jacket is communicated with CWR; The side of said cold burnt case be provided with from the nitrogen circulation passage of Nitrogen plant, said nitrogen circulation passage is gone into pipe through two-way nitrogen and is got in the said cold burnt case, the top of said cold burnt case is provided with the high temperature nitrogen passage and is communicated with fly-ash separator; Below said cold burnt case, interchanger is set, the water inlet pipe of said interchanger is communicated with said CWR, and the rising pipe of said interchanger is communicated with said boiler feed; The high temperature nitrogen inlet of said interchanger is communicated with said fly-ash separator, the low temperature nitrogen outlet and the nitrogen circulation channel connection of said interchanger, and said nitrogen circulation passage is connected with the nitrogen circulation blower fan.
45 °～60 ° at the inclination angle of said cold burnt passage; Horizontal sequence 1～3 row of said cold burnt passage, vertically sequence 3～10 rows; The joint of said red burnt passage and said cold burnt case is provided with the opening for feed plate-turning door, and the discharge port of said cold burnt case is provided with the discharge port plate-turning door; The two ends of said interchanger are provided with inspection manhole, and the bottom of said interchanger is provided with ash output hole; Said cold burnt passage is garden type or Polygons.
The present invention compares with existing skill wood, has the following advantages and beneficial effect:
The present invention utilizes water coolant and nitrogen simultaneously red Jiao to be cooled off, and red Jiao's thermal radiation, convection current, heat conduction three aspects can make red Jiao about 1000 ℃ be cooled to below 150 ℃, the red burnt sensible heat of maximum possible recovery through transmitting heat.In process of cooling,, reduced running cost because the effect of water coolant makes the nitrogen consumption reduction by 40%～50% of the consumption of nitrogen than prior art.
In the modification scheme of the present invention, do not have the large-scale transportation and the lifting gear of general dry coke quenching auxiliary, do not have big formed coke jar; Do not have one-time dedusting, do not have the high pressure waste heat steam boiler, maximum possible utilize enterprise's existing installation; Greatly reduce the investment of construction like this, greatly reduce running cost.
Description of drawings
Fig. 1 is structural representation of the present invention (front view);
Fig. 2 is that the A of Fig. 1 is to view;
Fig. 3 is the structural representation (front view) of cold burnt case and interchanger;
Fig. 4 is that the B of Fig. 3 is to view;
Fig. 5 is the B-B sectional view (water coolant in cooling water cavity flow to synoptic diagram) of Fig. 3;
Fig. 6 is that the C of Fig. 5 is to view (water coolant in the top cover water jacket flow to synoptic diagram);
Fig. 7 is the A-A sectional view (diagrammatic cross-section of interchanger) of Fig. 3;
Fig. 8 is a process flow sheet of the present invention.
Embodiment
Shown in Fig. 1～7, a kind of coke coke wet quenching is transformed into the process unit of dry coke quenching, comprising: be arranged on coke oven 1 lateral coke guide 2, the quenching car 3 that joins with coke guide 2, and ground station for dust removal 1-1, rotary conveyor 7, boiler, Nitrogen plant; Red burnt passage 4 is set is communicated with in said quenching car 3 burnt platform one side of drying in the air with cold burnt case 5; The cold burnt passage 5-5 that useful cooling water cavity 5-4 isolates, is obliquely installed in the said cold burnt case 5; Said cold burnt passage 5-5 exit is provided with shield cap 6; The pipeline of said shield cap 6 is communicated with ground station for dust removal 1-1, and the below in said cold burnt passage 5-5 exit is connected with rotary conveyor 7; Said cooling water cavity 5-4 by top cover water jacket 5-2 and all around water jacket 5-3 constitute, said around water jacket 5-3 be communicated with cooling water inlet pipe 15 from boiler, said top cover water jacket 5-2 is communicated with CWR 12; The side of said cold burnt case 5 be provided with from the nitrogen circulation path 10 of Nitrogen plant, said nitrogen circulation path 10 is gone into pipe 14 through two-way nitrogen and is got in the said cold burnt case 5, the top of said cold burnt case 5 is provided with high temperature nitrogen passage 11 and is communicated with fly-ash separator 9; Below said cold burnt case 5, interchanger 8 is set, the water inlet pipe 8-3 of said interchanger 8 is communicated with said CWR 12, and the rising pipe 8-4 of said interchanger 8 is communicated with said boiler feed; The high temperature nitrogen inlet 8-1 of said interchanger 8 is communicated with said fly-ash separator 9, and the low temperature nitrogen outlet 8-2 of said interchanger 8 is communicated with the nitrogen circulation path 10, and said nitrogen circulation path 10 is connected with nitrogen circulation blower fan 13.
45 °～60 ° at the inclination angle of said cold burnt passage 5-5; Horizontal sequence 1～3 row of said cold burnt passage 5-5, vertically sequence 3～10 rows; Said red burnt passage 4 is provided with opening for feed plate-turning door 5-1 with the joint of said cold burnt case 5, and the discharge port of said cold burnt case 5 is provided with discharge port plate-turning door 5-6; The two ends of said interchanger 8 are provided with inspection manhole 8-5, and the bottom of said interchanger 8 is provided with ash output hole 8-6; Said cold burnt passage 5-5 is garden type or Polygons.
Cooling water system of the present invention:
The boiler softening water gets into cold burnt case 5 by cooling water inlet pipe 15, carries out being discharged by CWR 12 after the heat exchange with high temperature coke, gets into interchanger 8, carries out discharging into boiler feed by the rising pipe of interchanger 8 after the heat exchange with high temperature nitrogen.
Nitrogen circulating system of the present invention:
Nitrogen divides two-way nitrogen to go into pipe 14 by the nitrogen circulation path 10; Get into high temperature nitrogen passage 11 after getting into cold burnt case 5 heat exchanges of part respectively; Through getting into interchanger 8 heat exchange after fly-ash separator 9 dedustings, get into the nitrogen circulation path 10 then, get into cold burnt case 5 circulations again through nitrogen circulation blower fan 13.
Coke trend of the present invention:
Red Jiao gets into cold burnt case 5 from quenching car through red burnt passage 4, and the cooling back is discharged by rotary conveyor 7 and is delivered to sieve Jiao Ta.
Like Fig. 1,2, shown in 8; Structural representation of the present invention (processing set-up figure) is to formulate according to present China coke industry coke oven coke wet quenching on-site actual situations; On the basis that keeps coke wet quenching; Utilize field position; Suit measures to local conditions, reach the purpose that coke wet quenching is transformed into dry coke quenching with less input.
Existing coke oven 1, coke guide 2, quenching car 3 processing set-up are remained stationary; In quenching car 3 reinforcement walls that burnt platform one side builds a stifled Steel Concrete of drying in the air; Set up Steel Concrete or the red burnt passage 4 of steel at coping; With guarantee red Jiao in the quenching car 3 can be fast whole cold burnt casees 5 of entering, and be provided with shield cap 6 and prevent that burnt dirt from spreading.
The dust at red burnt passage and position, cold burnt whereabouts sucks ground station for dust removal 1-1 with shield cap 6 pipelines, and the coke dust of collecting through fly-ash separator 9 in the nitrogen circulation process also can utilize pneumatic conveying mode to get into ground station for dust removal 1-1.
Cooled coke can utilize the rotary conveyor 7 of former cold burnt platform, and it is transported to sieve Jiao Ta.
The pressurized air source of cold burnt case 5 entrance and exit turnover panel hermatic doors also can utilize original air compressor source of the gas.Existing dry coke quenching technology; Must go up highly compressed nitrogen waste heat boiler; Technical high with the maneuverability requirement; Most of enterprises select external product for use, and investment is big, and the present invention ℃ rises to high-temperature water≤90 ℃ entering boiler with water coolant heat absorption back by water at low temperature≤30; Can utilize the self-owned power plant boiler or the central heating boiler of existing enterprise; Do not have boiler like enterprise, only need to go up the home-made boiler product and get final product, help the armamentarium production domesticization.
Set up cold burnt case system, Dan Zuleng is burnt, and amount is 10-20t, is about 30-50 minute cooling time, and the big I of the burnt case of Dan Zuleng is confirmed according to user's coke oven amount of capacity and cooling water inflow size, and use capable of being combined, satisfies the big or small user's of different output needs.In the type selecting process, can suitably stay certain surplus, so just can satisfy the coke oven temporal requirement of the discharging of the coke, leave maintenance leeway also can for cold burnt equipment, guarantee the long-term non-stop run at full capacity of coke oven.
Schedule of operation in the dry coke quenching process of cooling is all by the PLC auto-control.
In the dry coke quenching process of cooling; Use the recycle gas on-line detecting system that the nitrogen composition that moves in the cold burnt case system is analyzed and detected; Control CO, CO2 content ratio are replenished nitrogen or combustion air, in case of necessity to guarantee the safe and reliable operation of equipment.
The demonstration and the chain controlling alarm of teletransmission temperature, pressure are set in the water coolant high-temperature zone of the top of cold burnt case interlayer and interchanger, safety valve is set simultaneously, guarantee the safe operation under normal pressure and temperature of cold burnt case.
Cold burnt operating process of the present invention:
Advancing water coolant makes it to be full of cold burnt case 5 and interchanger 8 (draining whole air) → open opening for feed plate-turning door 5-1 → red Jiao and gets into → close opening for feed plate-turning door 5-1 → send into nitrogen (this moment, water coolant moved with the nitrogen normal circulation) → stop to supply nitrogen after 30～50 minutes; Stop water coolant move → opening discharge port plate-turning door 5-6 successively (can be from left to right; Get on, get off; As opening left side 1# door down earlier; Drain cold defocusedly promptly close; Open upper left 1# door again; Drain cold defocusedly promptly close; The 2# door is opened and is drained cold Jiao under the left side successively; Close; Upper left 2# door is opened and is drained cold Jiao; Close, by that analogy) → water coolant opens and to move → to open the last program of opening for feed plate-turning door 5-1 → repeat.
Claims (6)
1. a coke coke wet quenching is transformed into the process unit of dry coke quenching, comprising: be arranged on the lateral coke guide of coke oven (1) (2), the quenching car (3) that joins with coke guide (2), and ground station for dust removal (1-1), rotary conveyor (7), boiler, Nitrogen plant; It is characterized in that: red burnt passage (4) is set is communicated with cold burnt case (5) in said quenching car (3) burnt platform one side of drying in the air; The cold burnt passage (5-5) that useful cooling water cavity (5-4) is isolated, is obliquely installed in the said cold burnt case (5); Said cold burnt passage (5-5) exit is provided with shield cap (6); The pipeline of said shield cap (6) is communicated with ground station for dust removal (1-1), and the below in said cold burnt passage (5-5) exit is connected with rotary conveyor (7); Said cooling water cavity (5-4) by top cover water jacket (5-2) and all around water jacket (5-3) constitute, said around water jacket (5-3) be communicated with cooling water inlet pipe (15) from boiler, said top cover water jacket (5-2) is communicated with CWR (12); The side of said cold burnt case (5) be provided with from the nitrogen circulation passage (10) of Nitrogen plant; Said nitrogen circulation passage (10) is gone into pipe (14) through two-way nitrogen and is got in the said cold burnt case (5), and the top of said cold burnt case (5) is provided with high temperature nitrogen passage (11) and is communicated with fly-ash separator (9); Interchanger (8) is set below said cold burnt case (5), and the water inlet pipe (8-3) of said interchanger (8) is communicated with said CWR (12), and the rising pipe (8-4) of said interchanger (8) is communicated with said boiler feed; The high temperature nitrogen inlet (8-1) of said interchanger (8) is communicated with said fly-ash separator (9), and the low temperature nitrogen outlet (8-2) of said interchanger (8) is communicated with nitrogen circulation passage (10), and said nitrogen circulation passage (10) is connected with nitrogen circulation blower fan (13).
2. according to the process unit of the said dry coke quenching of claim 1, it is characterized in that: the inclination angle of said cold burnt passage (5-5) is 45 °～60 °.
3. according to the process unit of the said dry coke quenching of claim 1, it is characterized in that: horizontal sequence 1～3 row of said cold burnt passage (5-5), vertically sequence 3～10 rows.
4. according to the process unit of the said dry coke quenching of claim 1, it is characterized in that: said red burnt passage (4) is provided with opening for feed plate-turning door (5-1) with the joint of said cold burnt case (5), and the discharge port of said cold burnt case (5) is provided with discharge port plate-turning door (5-6).
5. according to the process unit of the said dry coke quenching of claim 1, it is characterized in that: the two ends of said interchanger (8) are provided with inspection manhole (8-5), and the bottom of said interchanger (8) is provided with ash output hole (8-6).
6. according to the process unit of the said dry coke quenching of claim 1, it is characterized in that: said cold burnt passage (5-5) is garden type or Polygons.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110230932A CN102304368A (en) | 2011-08-10 | 2011-08-10 | Process device for modifying wet quenched coke into dry quenched coke |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110230932A CN102304368A (en) | 2011-08-10 | 2011-08-10 | Process device for modifying wet quenched coke into dry quenched coke |
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| CN102304368A true CN102304368A (en) | 2012-01-04 |
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| CN201110230932A Pending CN102304368A (en) | 2011-08-10 | 2011-08-10 | Process device for modifying wet quenched coke into dry quenched coke |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104212465A (en) * | 2014-09-09 | 2014-12-17 | 天津大学 | Dust removal method for coke discharge process in coking industry |
| CN107828429A (en) * | 2017-12-01 | 2018-03-23 | 中冶焦耐(大连)工程技术有限公司 | A kind of environment friendly wet quenching vehicle and coke wet quenching method |
| CN110257084A (en) * | 2019-06-27 | 2019-09-20 | 宝钢湛江钢铁有限公司 | A kind of coke dry quenching furnace fills cold burnt conveying device |
| CN112280578A (en) * | 2020-09-29 | 2021-01-29 | 浙江长三角聚农科技开发有限公司 | Waste-free resource recycling process and system based on biomass pyrolysis carbonization |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101845308A (en) * | 2010-06-23 | 2010-09-29 | 太原理工大学 | Coke quenching device with byproducts of synthetic gas and vapor and process thereof |
| CN202265539U (en) * | 2011-08-10 | 2012-06-06 | 山西英达飞科技贸易有限公司 | Process device for reconstructing coke wet quenching into coke dry quenching |
-
2011
- 2011-08-10 CN CN201110230932A patent/CN102304368A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101845308A (en) * | 2010-06-23 | 2010-09-29 | 太原理工大学 | Coke quenching device with byproducts of synthetic gas and vapor and process thereof |
| CN202265539U (en) * | 2011-08-10 | 2012-06-06 | 山西英达飞科技贸易有限公司 | Process device for reconstructing coke wet quenching into coke dry quenching |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104212465A (en) * | 2014-09-09 | 2014-12-17 | 天津大学 | Dust removal method for coke discharge process in coking industry |
| CN107828429A (en) * | 2017-12-01 | 2018-03-23 | 中冶焦耐(大连)工程技术有限公司 | A kind of environment friendly wet quenching vehicle and coke wet quenching method |
| CN107828429B (en) * | 2017-12-01 | 2023-05-16 | 中冶焦耐(大连)工程技术有限公司 | Environment-friendly vehicle for wet quenching and wet quenching method |
| CN110257084A (en) * | 2019-06-27 | 2019-09-20 | 宝钢湛江钢铁有限公司 | A kind of coke dry quenching furnace fills cold burnt conveying device |
| CN112280578A (en) * | 2020-09-29 | 2021-01-29 | 浙江长三角聚农科技开发有限公司 | Waste-free resource recycling process and system based on biomass pyrolysis carbonization |
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Application publication date: 20120104 |