CN101865463A - Petroleum coke power combustor - Google Patents

Petroleum coke power combustor Download PDF

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Publication number
CN101865463A
CN101865463A CN 201010206674 CN201010206674A CN101865463A CN 101865463 A CN101865463 A CN 101865463A CN 201010206674 CN201010206674 CN 201010206674 CN 201010206674 A CN201010206674 A CN 201010206674A CN 101865463 A CN101865463 A CN 101865463A
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CN
China
Prior art keywords
petroleum coke
coke powder
combustion chamber
passage
wind
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CN 201010206674
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Chinese (zh)
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CN101865463B (en
Inventor
杨奇飞
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华南理工大学
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Publication of CN101865463A publication Critical patent/CN101865463A/en
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Publication of CN101865463B publication Critical patent/CN101865463B/en

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Abstract

The invention discloses a petroleum coke powder combustor, which comprises a feeding pipe, a primary air turbine, a secondary air turbine, and a combustion cylinder coaxially arranged in turn. A primary air passage is provided with a petroleum coke powder concentrator inside; a secondary air passage is sleeved outside the combustion cylinder and is communicated with the secondary air turbine; the petroleum coke powder concentrator is respectively communicated with a thick petroleum coke powder passage and a thin petroleum coke powder passage; the thick petroleum coke powder passage and the thin petroleum coke powder passage are respectively communicated with a first-stage combustion chamber and a second-stage combustion chamber; the first-stage combustion chamber is communicated with the second-stage combustion chamber; and the second-stage combustion chamber and the secondary air passage are connected to a hearth. The two-stage combustion technology is adopted, so the space and time for combusting petroleum coke powder airflow are enlarged and prolonged. The primary air turbine feeds primary air to enhance the disturbance; simultaneously the secondary air turbine feeds secondary air to form rotary jet flow to entrain high-temperature flue gas, so that the petroleum coke powder is easy to fire.

Description

A kind of petroleum coke power combustor

Technical field

The present invention relates to a kind of petroleum coke power combustor.

Background technology

Petroleum coke is that crude oil is after distillation separates weight matter oil, mink cell focus is again through the process of hot tearing, the product that is transformed, from appearance, coke is an out-of-shape, black bulk (or particle) not of uniform size, metallic luster is arranged, the particle tool multi-pore structure of coke, main element set becomes carbon, occupy more than the 80wt%, remaining is hydrogen, oxygen, nitrogen, sulphur and metal.Be mainly used in and produce carbon product,, provide the usefulness of steel-making, non-ferrous metal, aluminium metallurgy as graphite electrode, anode arc; Produce the carborundum goods, as various emery wheels, rubber, sand paper etc.; Produce the commodity calcium carbide for making products such as synthetic fibers, acetylene; Also can be as fuel.

Along with crude oil becomes the raising that weight, heavy oil shrinking of the market and environmental protection require gasoline, diesel quality, coking has become important residual oil manufacturing process, and the thing followed is that increasing petroleum coke is rendered to market.2008, the burnt total output of Chinese domestic petroleum was 1,567 ten thousand tons, increases by 11.1% on a year-on-year basis; The net export amount is 87.7 ten thousand tons, increases by 4.4% on a year-on-year basis; Apparent consumption figure is 1,479 ten thousand tons, increases by 11.5% on a year-on-year basis; Except that July and August, the burnt export volume of annual domestic petroleum is all greater than import volume, and domestic petroleum Jiao totally is in for the state greater than need.Jiao's of CNPC in 2008 consumption structure is: aluminum electrolysis industry 60%; Carbon element industry 20%; Industrial silicon and smelting industry 7%; Fuel 13%.Petroleum coke acts as a fuel and still has potentiality.

The calorific value of petroleum coke is the twice of general coal, and petroleum coke as boiler oil, is replaced coal or oil, and production steam-electric power, heat supply are turned waste into wealth, and huge economic benefit is arranged.In general, just can be used as long as calorific value reaches the petroleum coke of 8300-8500 kilocalorie, 1.1~1.2 tons of petroleum coke material powder calorific values are equivalent to 1 ton of fuel oil.At present the burnt price of domestic petroleum is up to about 1200 yuan/ton, and the cost that is processed into coke powder is about 200-300 unit/ton, and quality preferably the residual oil price in 3450-3550 unit.It is few that petroleum coke contains ash content, and it is less to ambient influnence to burn.But because volatile fraction in petroleum coke content is lower, and the phosphorus content height, make it be difficult to light.Therefore, be badly in need of a kind ofly easily catching fire, the petroleum coke power combustor of energy-saving and environmental protection, safety.

Summary of the invention

Technical problem to be solved by this invention is to overcome the prior art above shortcomings, provides a kind of and easily catches fire, the petroleum coke power combustor of energy-saving and environmental protection, safety.

The technical solution adopted in the present invention is:

A kind of petroleum coke power combustor, comprise feed pipe, a wind eddies wheel, secondary wind eddies wheel, the petroleum coke powder inspissator, combustion barrel, described feed pipe, a wind eddies wheel, secondary wind eddies wheel, combustion barrel is arranged in co-axial alignment successively, described wind eddies wheel is sleeved on the described feed pipe, described wind eddies wheel is connected to the mixed once district with the outlet of described feed pipe, the mixed once district is communicated with an end of described petroleum coke powder inspissator, downstream, described mixed once district is a wind passage, described secondary wind eddies wheel is sleeved on the described wind passage, be provided with described petroleum coke powder inspissator in the described wind passage, combustion barrel is with secondary air channel outward, described secondary air channel is connected with described secondary wind eddies wheel, dense petroleum coke powder passage is arranged in the described combustion barrel, light petroleum coke powder passage, the one-level combustion chamber, secondary combustion chamber, the other end of described petroleum coke powder inspissator respectively with an end of described dense petroleum coke powder passage, one end of light petroleum coke powder passage is communicated with, the other end of dense petroleum coke powder passage is communicated with an end of one-level combustion chamber, the other end of light petroleum coke powder passage is communicated with secondary combustion chamber, the other end of described one-level combustion chamber communicates with described secondary combustion chamber, and described secondary combustion chamber and described secondary air channel connect to burner hearth.

Described one-level combustion chamber, indoor one-level fire hole, the secondary points fire hole of being respectively equipped with of secondary firing.

Described dense petroleum coke powder passage, light petroleum coke powder passage are cuboid, and described one-level combustion chamber, secondary combustion chamber are cylindrical.

Described secondary air channel section is an annulus.

Compared with prior art, the invention has the beneficial effects as follows:

The present invention utilizes described wind eddies wheel to send wind one time, strengthens disturbance, helps lend some impetus to mixing of wind and petroleum coke powder; Also utilize simultaneously described secondary wind eddies wheel to send secondary wind, form rotating jet, entrainment high-temperature flue gas, make petroleum coke powder be easy to fire burns; The present invention establishes described petroleum coke powder inspissator on a described wind passage, a petroleum coke powder air-flow is divided into deep or light two strands, and it is more to contain petroleum coke powder in the described dense petroleum coke powder air-flow, is of value to catching fire, promote burning; In addition, the present invention adopts the two-stage combustion technology, described dense petroleum coke powder air-flow burns in described one-level combustion chamber earlier, entering described secondary combustion chamber again burns with described light petroleum coke powder air-flow, the space and the time of petroleum coke powder gas stream burning have been strengthened, and because the two-stage combustion chamber all is in higher temperature, high temperature can effectively promote the completing combustion of petroleum coke powder particle on a large scale; Adopt the petroleum coke power combustor among the present invention to carry out lighting of petroleum coke powder particle, more can realize the ignition of petroleum coke, more stable, the fuel-economizing of combustion process than existing burner; So the present invention has advantages such as inflammable, energy-conservation, efficient.

Description of drawings

Fig. 1 is the structural representation of specific embodiment PetroChina Company Limited. coke powder burner.

The specific embodiment

Below in conjunction with accompanying drawing concrete enforcement of the present invention is described further, but enforcement of the present invention and protection domain are not limited thereto.

As shown in Figure 1, this petroleum coke power combustor comprises feed pipe 1, a wind eddies wheel 2, secondary wind eddies wheel 3, petroleum coke powder inspissator 5, combustion barrel 14, described feed pipe 1, a wind eddies wheel 2, secondary wind eddies wheel 3, combustion barrel 14 is arranged in co-axial alignment successively, described wind eddies wheel 2, secondary wind eddies wheel 3 forms the rotating jet feeding system of wind and secondary wind respectively, described wind eddies wheel 2 is sleeved on the described feed pipe 1, described wind eddies wheel 2 is connected to mixed once district 4 with the outlet of described feed pipe 1, carry out the mixed once of petroleum coke powder particle and air, 4 downstreams, described mixed once district are wind passages 13, described secondary wind eddies wheel 3 is sleeved on the described wind passage 13, establish described petroleum coke powder inspissator 5 on the described wind passage 13, the combustion barrel 14 outer secondary air channels 10 that are with of wind passage 13 right-hand members, described secondary air channel 10 is connected with described secondary wind eddies wheel 3, section is an annulus, dense petroleum coke powder passage 6 is arranged in the described combustion barrel 14, light petroleum coke powder passage 9, one-level combustion chamber 7, secondary combustion chamber 11, described dense petroleum coke powder passage 6, light petroleum coke powder passage 9 is a cuboid, described one-level combustion chamber 7, secondary combustion chamber 11 is cylindrical, described petroleum coke powder inspissator 5 and described dense petroleum coke powder passage 6, light petroleum coke powder passage 9 is communicated with, described dense petroleum coke powder passage 6, light petroleum coke powder passage 9 leads to one-level combustion chamber 7 more respectively, secondary combustion chamber 11, described one-level combustion chamber 7 communicates with described secondary combustion chamber 11, and be respectively equipped with one-level fire hole 8, secondary points fire hole 12, described secondary combustion chamber 11 connects to burner hearth with described secondary air channel 10.

The operation principle of this petroleum coke power combustor is as follows: the petroleum coke powder particle is from the described mixed once of described feed pipe 1 spirt district 4, air forms a wind rotating jet by described wind eddies wheel 2 and also sprays into described mixed once district 4, because a wind is swirling eddy, both obtain mixing more fully in described mixed once district 4, form one time the petroleum coke powder air-flow; A described petroleum coke powder air-flow enters described petroleum coke powder inspissator 5, be divided into deep or light two strands, wherein dense petroleum coke powder air communication is crossed described dense petroleum coke powder passage 6 and is entered described one-level combustion chamber 7, because the burnt content of described dense petroleum coke powder air-flow PetroChina Company Limited. is higher, under lighting, the thermal-flame of described one-level fire hole 8 is being easy to fire burns, enter described secondary combustion chamber 11 under the primary combustion, light petroleum coke powder air-flow then enters described secondary combustion chamber 11 by described light petroleum coke powder passage 9, mix with the dense petroleum coke powder air-flow of aflame high temperature, light down further fire burns at the thermal-flame of described secondary points fire hole 12, under the high temperature of two-stage combustion chamber, guarantee that the petroleum coke powder air-flow has the long period, electric fiery process in a big way guarantees smooth the fire burns of petroleum coke powder air-flow; The petroleum coke powder air-flow of having lighted then enters burner hearth again, the secondary wind rotating jet that forms by described secondary wind eddies wheel 3 also is ejected into burner hearth simultaneously, the tangential-velocity component of swirling eddy can be rolled up seat high ambient temperatures flue gas, improve the petroleum coke powder gas flow temperature, make the sufficiently high temperature of petroleum coke powder gases flow, more stably burn.

The present invention can be widely used in the fuel combustion appliance field.

Claims (4)

1. petroleum coke power combustor, it is characterized in that comprising feed pipe (1), a wind eddies wheel (2), secondary wind eddies wheel (3), petroleum coke powder inspissator (5), combustion barrel (14), described feed pipe (1), a wind eddies wheel (2), secondary wind eddies wheel (3), combustion barrel (14) is arranged in co-axial alignment successively, described wind eddies wheel (2) is sleeved on the described feed pipe (1), described wind eddies wheel (2) is connected to mixed once district (4) with the outlet of described feed pipe (1), mixed once district (4) is communicated with an end of described petroleum coke powder inspissator (5), downstream, described mixed once district (4) is a wind passage (13), described secondary wind eddies wheel (3) is sleeved on the described wind passage (13), be provided with described petroleum coke powder inspissator (5) in the described wind passage (13), the outer secondary air channel (10) that is with of combustion barrel (14), described secondary air channel (10) is taken turns (3) with described secondary wind eddies and is connected, dense petroleum coke powder passage (6) is arranged in the described combustion barrel (14), light petroleum coke powder passage (9), one-level combustion chamber (7), secondary combustion chamber (11), the other end of described petroleum coke powder inspissator (5) respectively with an end of described dense petroleum coke powder passage (6), one end of light petroleum coke powder passage (9) is communicated with, the other end of dense petroleum coke powder passage (6) is communicated with an end of one-level combustion chamber (7), the other end of light petroleum coke powder passage (9) is communicated with secondary combustion chamber (11), the other end of described one-level combustion chamber (7) communicates with described secondary combustion chamber (11), and described secondary combustion chamber (11) connects to burner hearth with described secondary air channel (10).
2. petroleum coke power combustor according to claim 1 is characterized in that: be respectively equipped with one-level fire hole (8), secondary points fire hole (12) in described one-level combustion chamber (7), the secondary combustion chamber (11).
3. petroleum coke power combustor according to claim 1 is characterized in that: described dense petroleum coke powder passage (6), light petroleum coke powder passage (9) are cuboid, and described one-level combustion chamber (7), secondary combustion chamber (11) are cylindrical.
4. according to each described petroleum coke power combustor of claim 1~3, it is characterized in that: described secondary air channel (10) section is an annulus.
CN2010102066749A 2010-06-21 2010-06-21 Petroleum coke power combustor CN101865463B (en)

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CN2010102066749A CN101865463B (en) 2010-06-21 2010-06-21 Petroleum coke power combustor

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CN101865463B CN101865463B (en) 2011-12-28

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6367394B1 (en) * 1997-03-31 2002-04-09 Mitsubishi Heavy Industries Pulverized fuel combustion burner
CN1400420A (en) * 2002-09-09 2003-03-05 国电热工研究院 Double-stepping fuel combustion method and its double-stepping cyclone burner
CN1477330A (en) * 2003-06-23 2004-02-25 西安交通大学 Radial gradient two air-controlled cyclone coal dust combustor
JP3830582B2 (en) * 1996-07-26 2006-10-04 バブコック日立株式会社 Pulverized coal combustion burner
CN201715499U (en) * 2010-06-21 2011-01-19 华南理工大学 Burner for petroleum coke powder

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3830582B2 (en) * 1996-07-26 2006-10-04 バブコック日立株式会社 Pulverized coal combustion burner
US6367394B1 (en) * 1997-03-31 2002-04-09 Mitsubishi Heavy Industries Pulverized fuel combustion burner
CN1400420A (en) * 2002-09-09 2003-03-05 国电热工研究院 Double-stepping fuel combustion method and its double-stepping cyclone burner
CN1477330A (en) * 2003-06-23 2004-02-25 西安交通大学 Radial gradient two air-controlled cyclone coal dust combustor
CN201715499U (en) * 2010-06-21 2011-01-19 华南理工大学 Burner for petroleum coke powder

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