CN201964751U

CN201964751U - Novel soft carbon black production device

Info

Publication number: CN201964751U
Application number: CN201020288008XU
Authority: CN
Inventors: 马宝亮; 刘江红; 孟奎; 刘成友
Original assignee: LONGXING CHEMICAL STOCK Co Ltd
Current assignee: LONGXING CHEMICAL STOCK Co Ltd
Priority date: 2010-08-07
Filing date: 2010-08-07
Publication date: 2011-09-07
Anticipated expiration: 2020-08-07

Abstract

A device for producing soft carbon black is characterized in that a contraction end section of a reacting furnace adopts an arced smooth curve structure. Raw oil jetted from the nozzle of a raw oil spray gun meets rotary high-temperature burnt residual gas entering the reacting furnace from an upper and a lower tangential combustion chambers on two sides of the reacting furnace, a small part of the raw oil is burnt to provide sufficient heat, and most of the raw oil is turned into carbon black through pyrolysis. Since the contraction end section adopts the smooth curve structure, reaction gas flows can smoothly pass through the contraction end section in the form of rotary plunger flows, the phenomenon of back mixing is reduced, and the problem that coking usually comes along with the task of disposing of a large amount of soft carbon black at a low reaction temperature can be solved. Therefore, the quality of carbon black is improved, and the carbon black output is increased.

Description

The novel soft carbon black process units

Technical field

The utility model relates to a kind of novel soft carbon black process units.

Background technology

The generation of carbon black is to be fuel with liquid state or gaseous hydrocarbon, completing combustion generation high temperature combustion residual air spreads and delivers to conversion zone in the reacting furnace combustion chamber, collide with the feedstock oil that sprays into via the big rifle of feedstock oil, sub-fraction feedstock oil imperfect combustion is to replenish not enough heat, and most of feedstock oil cracking generates carbon black.At quench zone, make the stopping of reaction by spraying into chilled water (chw), the carbon black smoke of moisture vapor enters gathering system through a series of heat exchange measures, and the powdery carbon black that is collected is through granulation, and is dry and become the finished product carbon black pellet.

Black reactor is the nucleus equipment of production of carbon black, and the treating capacity of the kind of production carbon black, carbon black mass, feedstock oil, the output of carbon black and yield etc. all depend on black reactor to a great extent, and it is the basis of production of carbon black.Black reactor divides two kinds in hard (carbon) black stove and soft carbon stove substantially.

Soft carbon is low because of inhaling iodine, than hard (carbon) black its unique physical characteristic is arranged, from working condition, produce soft carbon and have the advantages that the wind oil ratio is low, reaction temperature is low, the reaction time is long and particle size carbon black is big, also just increased possibility simultaneously because of the incomplete coking on the furnace wall of feedstock oil cracking.Soft carbon black reaction furnace improves through several generations, what extensively adopt for most carbon black plants at present is structure as Fig. 3, the advantage of the reacting furnace of this moulding is that the reducing of reacting furnace can be played the effect of " current limliting ", heat is fully used, feedstock oil can have higher feedstock oil yield in this abundant cracking.Shortcoming is sudden change place at contraction section, and reaction gas flow easily produces " back mixing " phenomenon owing to be subjected to violent turbulence, often easily with unreacted completely feedstock oil get rid of on the furnace wall, produce hard carbon, influence product quality, make the performance reduction that cooperates glue.For fear of this phenomenon, often take to reduce the mode of producing load, but the output of carbon black also descends thereupon on the technology.

Summary of the invention

The purpose of this utility model just provides a kind of drum type brake reaction unit, by to comprising that the big rifle of feedstock oil goes into the control of parameters such as stove size, realizes the control to product quality more easily.

The utility model relates to a kind of carbon black reactor, this reactor be characterised in that wherein have two circles, be in the up and down combustion chamber of tangential direction of reacting furnace respectively, the conversion zone of cylinder type, the contraction section of arc tapered roller type, the reducing section, quench zone and activation flue, wherein said contraction section couples together conversion zone and reducing section.

A kind of soft carbon process units, the butt up and down that the combustion chamber is distributed in reacting furnace to, contraction section does not have mutation structure, adopt level and smooth camber line structure, camber line and reacting furnace conversion zone are tangent, and quench zone and activation flue are arranged after the reducing section, and the raw material oil gun is chewed atomizing angle 〉=90 °, contraction section length is 1.0～1.5 meters, and radian is 30～60 °.

Aforesaid a kind of soft carbon process units, it is one or more that the raw material oil gun is chewed.

Aforesaid a kind of soft carbon process units, ignition temperature is between 1400 ℃～1927 ℃.

Aforesaid a kind of soft carbon process units, burning fuel used is natural gas or fuel oil.

Aforesaid a kind of soft carbon process units, the black reactor shell rolls with carbon steel sheet and is welded into, inner lining refractory, heat-insulating material and insulation material.

The utility model is compared with prior art, has the following advantages:

1. reduce the product coking phenomenon, improve product quality, improve product yield.

2. because whole contraction section is continuous, can be very easily go into some character that the stove size is adjusted product, 300% stress at definite elongation of sizing material for example, the oil factor of product and compression sample oil factor etc. by adjusting the big rifle of feedstock oil.

3. reducing the loss in head of reaction gas flow in the reducing section, reduce the turbulent extent of reducing section air-flow, is that particle size carbon black is thinner more even.

4. reduced the erosion damage power of reaction gas flow, prolonged reacting furnace service life, reduced the parking maintenance time, increased carbon black output from another point of view reacting furnace reducing place.

Description of drawings

Fig. 1 is the vertical section that runs through the novel reaction stove, and

Fig. 2 is the cross sectional representation of reacting furnace along the A-A line, and

Fig. 3 is the vertical section of traditional reacting furnace.

Sequence number in the accompanying drawings is described as: 1. combustion chamber, the 2. big rifle of feedstock oil, 3. conversion zone, 4. contraction section, 5. reducing section, 6. quench zone, 7. feedstock oil inlet, 8. cooling water jecket.

The specific embodiment

Fuel with through the air of preheating the reacting furnace burner up and down butt to the combustion chamber in fully burning, generate the high temperature combustion residual air stream of rotation at a high speed.Feedstock oil is chewed with the jet angle greater than 90 ° from the raw material oil gun and is sprayed into the high temperature and high speed air-flow, be broken into tiny oil droplet by the shearing force of high airflow, oil droplet is through gasification then, the burning of sub-fraction feedstock oil, most of cracking generates carbon black, and mixed airflow so that rotary plunger is streamed by the reducing section more stably, has reduced the generation of " back mixing " phenomenon in reacting furnace, avoided soft carbon low, the big and coking phenomenon that takes place for the treatment of capacity because of the wind oil ratio.Thereby can improve product quality, improve product yield.

Claims

1. soft carbon process units, it is characterized in that: the butt up and down that the combustion chamber is distributed in reacting furnace to, contraction section does not have mutation structure, adopt level and smooth camber line structure, camber line and reacting furnace conversion zone are tangent, and quench zone and activation flue are arranged after the reducing section, and the raw material oil gun is chewed atomizing angle 〉=90 °, contraction section length is 1.0～1.5 meters, and radian is 30～60 °.

2. according to the described a kind of soft carbon process units of claim 1, it is characterized in that it is one or more that the raw material oil gun is chewed.

3. according to each described a kind of soft carbon process units of claim 1～2, it is characterized in that ignition temperature is between 1400 ℃～1927 ℃.

4. according to the described a kind of soft carbon process units of claim 3, fuel used be natural gas or fuel oil is characterized in that burning.

5. according to the described a kind of soft carbon process units of claim 4, it is characterized in that the black reactor shell rolls with carbon steel sheet and is welded into, inner lining refractory, heat-insulating material and insulation material.