CN102311826A - Substituted fuel and apparatus of carbon furnace - Google Patents
Substituted fuel and apparatus of carbon furnace Download PDFInfo
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- CN102311826A CN102311826A CN201110236934A CN201110236934A CN102311826A CN 102311826 A CN102311826 A CN 102311826A CN 201110236934 A CN201110236934 A CN 201110236934A CN 201110236934 A CN201110236934 A CN 201110236934A CN 102311826 A CN102311826 A CN 102311826A
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Abstract
The invention relates to a metallurgy technology and an apparatus, and concretely relates to a substituted fuel and an apparatus of a carbon furnace. The substituted fuel is petroleum coke powder. The apparatus which comprises an air compressor is characterized in that: the air compressor is connected with a gas storage tank through a pipeline, the gas storage tank is connected with a fuel bunker through a pipeline, the fuel bunker is connected with a fuel tank through a pipeline, each fuel outlet of the fuel tank is communicated with a fuel mixer, each fuel mixer is connected with a fuel injector, and the fuel injectors are opposite to the fire inlet of the carbon furnace. The apparatus of the invention has the following beneficial effects: high quality energies of heavy oil, combustion gases and the like are saved, and the cost of subsequent products of carbon products, electrolytic aluminum, and the like is greatly reduced on condition that the quality is guaranteed; fine petroleum coke is fully utilized, so added values of low quality petroleum are improved; and the apparatus which has the characteristics of reasonable technology, simple equipment, safety and reliability, and the like allows the carbon calcination technology to be revolutionarily changed.
Description
Technical field
The present invention relates to a kind of metallurgical technology and equipment, promptly a kind of carbon baking furnace alternative fuel and equipment.
Background technology
Aluminum Electrolysis Production all is that high-temperature calcination forms carbon materials through carbon baking furnace with carbon products such as anodes.In the past, carbon baking furnace is a fuel with heavy oil, coal gas, Sweet natural gas etc. all, and energy consumption and cost have seriously restricted the production and the application of carbon product all than higher.Seeking alternative fuel, reduce the roasting cost, is the key link of exploitation carbon product and related industries thereof.
Summary of the invention
The purpose of this invention is to provide a kind of can replacement for heavy, high-grade fuel such as coal gas, Sweet natural gas, and can satisfy the low-cost fuel of carbon baking processing requirement.
Another object of the present invention provides a kind of carbon baking equipment of low-cost fuel capable of using.
Above-mentioned purpose is realized by following technical scheme: a kind of carbon baking furnace alternative fuel is provided, is characterized in: said alternative fuel is a petroleum coke powder.
The granularity of said petroleum coke powder was particle >=80% of 200 mesh sieves.
It is the carbon baking equipment of fuel with the petroleum coke powder that one cover is provided; Be characterized in: this equipment has air, and air is through the pipe connection gas-holder, and gas-holder connects fuel bunker through pipeline; Fuel bunker is through the pipe connection fuel container; The fuel delivery outlet of fuel container is communicated with fuel mixer, and fuel mixer connects fuel injection pipe, fuel injection pipe and carbon baking furnace to go into burner relative.
Be provided with cooling driers between said air and the gas-holder, cooling driers links to each other with the fuel hauling equipment of gas-holder with the carbon baking stokehold respectively through pipeline.
There is opening for feed said fuel bunker top, and the storehouse pump is arranged below, and the storehouse pump is through the pipe connection fuel container.
The main body of said fuel container is the bucket-shaped casing of a kind of elongated slot; Fuel inlet pipe is inserted on the top of casing; Have a plurality of spray material ports on the fuel inlet pipe; The bottom of casing is provided with a plurality of fuel delivery outlets, and fuel delivery outlet is connected with the fuel hopper of fuel mixer, and fuel mixer is connected with fuel injector.
On the said fuel container vibrator is housed.
The main body of said fuel mixer is a kind of elongated mixing head; Side opening and fuel hopper is housed on one end of mixing head; The end is provided with sealing cover, and an adjustable pipe, the outer termination draught damper of adjustable pipe are inserted in perforate in the middle of the sealing cover; Another termination air-supply duct of draught damper, air-supply duct connects gas-holder through pressure charging valve.
The main body of said fuel injector is a kind of elongated spray tube, and a side opening of spray tube also is equipped with the combustion air tube stub, a termination fuel mixer; The dress feeding tube leaves the gap between the external diameter of feeding tube and the spray tube internal diameter in the spray tube, and spray tube one termination is led to fuel mixer; The other end is connected to the shower nozzle cover; Shower nozzle is equipped with in shower nozzle cover the inside, and the shower nozzle leading portion has a plurality of spray tanks, and the back segment coiling has flight.
The invention has the beneficial effects as follows: practice thrift high-grade energies such as heavy oil, combustion gas, under the prerequisite of ensuring the quality of products, reduce the cost of subsequent products such as carbon product and electrolytic aluminum significantly.And can make full use of the fine stone oil coke, improve the added value of low-quality refinery coke.Characteristics such as and it is reasonable to have technology, and equipment is simple, with low cost, safe and reliable make carbon baking technology that revolutionary variation take place.
Description of drawings
Fig. 1 is technical process and the structure principle chart of embodiment;
Fig. 2 is the parts fuel container front view of embodiment;
Fig. 3 is the parts fuel container left view of embodiment;
Fig. 4 is the enlarged front view of the parts fuel mixer of embodiment;
Fig. 5 is the enlarged front view of the parts fuel injector of embodiment;
Fig. 6 is the parts fuel mixer of embodiment and the wiring layout of fuel injector.
Visible among the figure: fuel container 1, casing 2, fuel inlet pipe 3, spray material port 4, fuel delivery outlet 5, fuel mixer 6; Fuel injector 7, mixing head 8, fuel hopper 9, adjustable pipe 10, draught damper 11; Spray tube 12, combustion air joint 13, feeding tube 14, shower nozzle cover 15, shower nozzle 16.
Embodiment
Total design of the present invention is with the fuel of refinery coke as carbon baking furnace, makes carbon products such as aluminium electrolysis anode.The handling equipment of petroleum coke powder fuel is provided simultaneously.Introduce a kind of embodiment below in conjunction with accompanying drawing:
Refinery coke is the by product of the raw oil cracking at high temperature of delayed coking unit when producing clean cargo.The output of refinery coke is about the 25-30% of raw oil.Its net calorific value is about 1.5-2 times of coal, and ash oontent is not more than 0.5%, and volatile matter is about about 11%.According to refinery coke structure and outward appearance, the refinery coke product can be divided into 4 kinds of needle coke, sponge coke, shot coke and coke breezes.Wherein, needle coke has tangible acicular structure and fiber pattern, and is main as superpower and ultra-high power graphite electrode in the steel-making.The sponge coke chemical reactivity is high, and foreign matter content is low, is mainly used in aluminum smelting industry and carbon industry.Shot coke or shot coke shape are spheroidal, and diameter 0.6-30mm generally is by high-sulfur, the production of high bituminous matter residual oil, as industrial fuels such as generating, cement.Coke breeze is produced through the fluidization coking process, its particle thin (diameter 0.1-0.4mm), and volatile matter is high, and coefficient of thermal expansion is high, can not directly be used for electrode preparation and carbon industry.In recent years, coke breeze output is in rising trend, and particularly in needle coke, sponge coke, shot coke, the ratio of coke breeze also obviously increases, and causes the carbon product downgrade.The development and use coke breeze improves its added value, and for the quality that improves existing refinery coke, the quality that particularly improves carbon product has great importance.Because petroleum coke powder is a solid particulate matter, its flowability and diffustivity are far away from oil gas fuel, and flame peripheral temperature drop is very big, is difficult to guarantee the harmony of furnace temperature, thereby can only be used as boiler oil before this, also is not used in the report of metallurgical furnace.
Experiment finds that substituting oil gas fuel with refinery coke must solve two problems: the one, pulverize, and the particle in small, broken bits in coke breeze and other refinery cokes is ground into the particulate below the particle diameter 0.075mm, have at least 80% above particle to cross 200 orders with top sieve.The 2nd, carry, refinery coke is distributed to the kiln the inside uniformly, burning under suspended state.First problem solves easily, adopts existing ball mill can reach the purpose of pulverizing.Second problem difficulty is bigger, because petroleum coke powder has certain viscosity, retardance is difficult to even diffusion easily.For this reason, this example recommends to adopt level pressure wind to send, multistage dispersion, and turbulent flow is gone into the technological line of stove.As shown in Figure 1, it is exactly to adopt air to produce high pressure gas that said level pressure wind send, again through cooling driers; Remove the moisture in the gas; Import the gas-holder storage again, gas-holder links to each other with fuel bunker, storehouse pump and mixing tank, injector respectively, emits with certain pressure during use.Multistage dispersion is meant the petroleum coke powder in the fuel bunker is pumped into fuel container through the storehouse, delivers to mixing tank from fuel container again, sends into injector by mixing tank, carries out three grades of dispersions.It is exactly that petroleum coke powder is squeezed into carbon baking furnace by injector with swirling eddy that said turbulent flow is gone into stove.The experiment proof: under these conditions, each item of petroleum coke powder burning index all can reach the level of heavy oil, coal gas and Sweet natural gas, and the quality of the carbon product of being produced also can reach the requirement of related standards, and production cost reduces significantly.
Below in conjunction with accompanying drawing fuel container, fuel mixer and fuel injector are illustrated:
Fig. 2,3 introduces a kind of petroleum coke powder fuel container (1); Its main body is the bucket-shaped casing of a kind of elongated slot (2); The top of casing (2) feeds fuel inlet pipe (3), and the storehouse pump of the preceding termination fuel bunker of fuel inlet pipe (3), fuel inlet pipe (3) get into its caliber of casing (2) back and dwindle successively; Tapered, downside is uniformly distributed with a plurality of spray material ports (4).For the ease of making, fuel-supply pipe (3) also can adopt the segmentation variable-diameter structure.Suppose that length is 4000mm in fuel-supply pipe (3) case, can be divided into three sections, every segment length is followed successively by 1500mm, 1500mm, 1000mm, and every section caliber is followed successively by 200mm, 150mm, 80mm, and every section has two spray material ports (4).Be provided with a plurality of fuel delivery outlets (5) in the bottom of casing (2).What give an example among the figure is 16 fuel delivery outlets (5).Each fuel delivery outlet (5) all hopper with a fuel mixer (6) is relative, and the outlet of fuel mixer (6) connects fuel injector (7).
In order to prevent that petroleum coke powder from blocking, and can install vibrator on fuel container (1).Vibrator can be the polarizer of driven by motor, also can be ultrasonic oscillator.Ultrasonic oscillator can be a transmission medium through water or air, to the fuel container transmission ripple that shakes.Casing (2) is vibrated, impel the petroleum coke powder dispersion flows.
Visible in conjunction with Fig. 4, the main body of this fuel mixer (6) is a kind of elongated mixing head (8), and an end section of mixing head (8) goes up side opening and a fuel hopper (9) is housed, and an end is provided with sealing cover, is provided with elastic seal ring in the sealing cover.Perforate in the middle of the sealing cover has an adjustable pipe (10) to insert mixing head (8), and the adjustable length of insertion leaves the gap between adjustable pipe (10) and the mixing head (8).The outer end of adjustable pipe (10) is connected with the output port of a draught damper (11), and the another port of draught damper (11) connects air-supply duct, and air-supply duct connects gas-holder through pressure charging valve.During work, fuel fall to get into mixing head (8) from fuel hopper (9), and the air-flow that gets into adjustable pipe (10) meets, and in traveling process thorough mixing.Certainly, adjustable pipe (10) the inside also can add spiral plate, and the air-flow rotation is advanced, to strengthen and the mixing of fuel.
Visible in conjunction with Fig. 5, the main body of fuel injector (7) is a kind of elongated spray tube (12), and the last side opening of spray tube (12) also is equipped with combustion air tube stub (13); Pipe end connects fuel mixer (6), and feeding tube (14) is housed in the pipe, leaves the gap between feeding tube (14) external diameter and spray tube (12) internal diameter; Spray tube (12) front end is connected to shower nozzle cover (15); Shower nozzle (16) is equipped with in shower nozzle cover (15) the inside, and shower nozzle (16) leading portion has a plurality of spray tanks, and the back segment coiling has flight.During work, the fuel powder of sending here through feeding tube (14) and gets into the end of combustion air at feeding tube and converges the flight that the back gets into shower nozzle (16) and form swirling eddy through combustion air tube stub (2), with after a plurality of spray tanks (6) brute force of front dish out.The spray tank here can be processed oblique slot, and shower nozzle (16) preferably can rotate under blast, to strengthen the rotating energy of air-flow.Swirling eddy carries the fuel powder and gets into kiln rapidly, evenly and rapidly launches and fierce burning, and temperature improves rapidly in the stove, reaches the effect of fuel oil or fuel gas buring.
Claims (9)
1. carbon baking furnace alternative fuel, it is characterized in that: said alternative fuel is a petroleum coke powder.
2. carbon baking furnace alternative fuel according to claim 1 is characterized in that: the granularity of said petroleum coke powder was particle >=80% of 200 mesh sieves.
3. one kind is the carbon baking equipment of fuel with the petroleum coke powder; It is characterized in that: this equipment has air, and air is through the pipe connection gas-holder, and gas-holder connects fuel bunker through pipeline; Fuel bunker is through the pipe connection fuel container; The fuel delivery outlet of fuel container is communicated with fuel mixer, and fuel mixer connects fuel injector, fuel injector and carbon baking furnace to go into burner relative.
4. carbon baking equipment according to claim 3 is characterized in that: be provided with cooling driers between said air and the gas-holder, cooling driers links to each other with the fuel hauling equipment of gas-holder with the carbon baking stokehold respectively through pipeline.
5. carbon baking equipment according to claim 3 is characterized in that: there is opening for feed said fuel bunker top, and the storehouse pump is arranged below, and the storehouse pump is through pipe connection fuel container (1).
6. carbon baking equipment according to claim 5; It is characterized in that: the main body of said fuel container (1) is the bucket-shaped casing of a kind of elongated slot (2); Fuel inlet pipe (3) is inserted on the top of casing (2), has a plurality of spray material ports (4) on the fuel inlet pipe (3), and the bottom of casing (2) is provided with a plurality of fuel delivery outlets (5); Fuel delivery outlet (5) is connected with the fuel hopper of fuel mixer (6), and fuel mixer (6) joins with fuel injector (7).
7. carbon baking equipment according to claim 6 is characterized in that: said fuel container is equipped with vibrator on (1).
8. carbon baking equipment according to claim 6; It is characterized in that: the main body of said fuel mixer (6) is a kind of elongated mixing head (8), and mixing head (8) is gone up side opening and fuel hopper (9) is housed, and the end is provided with sealing cover; An adjustable pipe (10) is inserted in perforate in the middle of the sealing cover; The outer termination draught damper (11) of adjustable pipe (10), another termination air-supply duct of draught damper (11), air-supply duct connects gas-holder through pressure charging valve.
9. carbon baking equipment according to claim 6; It is characterized in that: the main body of said fuel injector (7) is a kind of elongated spray tube (12), and a side opening of spray tube (12) also is equipped with combustion air tube stub (13), dress feeding tube (14) in the spray tube (12); Leave the gap between the external diameter of feeding tube (14) and spray tube (12) internal diameter; And be communicated with the fuel mixer (6) that spray tube (12) one ends connect, and spray tube (12) the other end is connected to shower nozzle cover (15), and shower nozzle (16) is equipped with in shower nozzle cover (15) the inside; Shower nozzle (16) leading portion has a plurality of spray tanks, and the back segment coiling has flight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110236934.1A CN102311826B (en) | 2011-08-18 | 2011-08-18 | Carbon baking furnace alternative fuel and equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110236934.1A CN102311826B (en) | 2011-08-18 | 2011-08-18 | Carbon baking furnace alternative fuel and equipment |
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| CN102311826A true CN102311826A (en) | 2012-01-11 |
| CN102311826B CN102311826B (en) | 2016-05-04 |
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| CN201110236934.1A Active CN102311826B (en) | 2011-08-18 | 2011-08-18 | Carbon baking furnace alternative fuel and equipment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104211038A (en) * | 2013-06-04 | 2014-12-17 | 宁夏嘉翔自控技术有限公司 | Safe carbon electrical calcination furnace |
| CN104879769A (en) * | 2015-06-08 | 2015-09-02 | 蔡克文 | Pulverized lignite feeder |
| CN114166028A (en) * | 2021-12-07 | 2022-03-11 | 安徽中持环境科技有限公司 | Roasting device for recovering multiple metals in copper smelting slag |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104211038A (en) * | 2013-06-04 | 2014-12-17 | 宁夏嘉翔自控技术有限公司 | Safe carbon electrical calcination furnace |
| CN104211038B (en) * | 2013-06-04 | 2016-05-18 | 宁夏嘉翔自控技术有限公司 | A kind of safe carbon element electricity forge furnace |
| CN104879769A (en) * | 2015-06-08 | 2015-09-02 | 蔡克文 | Pulverized lignite feeder |
| CN104879769B (en) * | 2015-06-08 | 2017-09-12 | 蔡克文 | Brown coal powder feed appliance |
| CN114166028A (en) * | 2021-12-07 | 2022-03-11 | 安徽中持环境科技有限公司 | Roasting device for recovering multiple metals in copper smelting slag |
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| CN102311826B (en) | 2016-05-04 |
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