A kind of pyrolyzer for thermals production
Technical field
The present invention relates to a kind of production of carbon black equipment, particularly a kind of equipment of thermals production.
Background technology
Pyrolysis method (also claiming thermal process) is a kind of common methods of production of carbon black, and it is that the employing Sweet natural gas is raw material, under the situation of anaerobic, nonflame, generates carbon black through 1000 to 1300 ℃ high temperature pyrolysises.The carbon black that this method is produced has unique quality, the purposes widely in fields such as rubber, machinery, metallurgy, plastics.
At present, global thermo-cracking production of carbon black producer mainly contains Canada and agree card Boyou and limit company (CANCARB LIMITED), and the U.S. wins the Subsidiary Company of wound group (EVONIC) and Muscovite GAZPROM company.Key equipment in the pyrolysis method production of carbon black is pyrolyzer, for this equipment, except last century, the forties introduced to some extent to it, does not all see the pertinent literature introduction later on.Its structure, principle are carried out blockade on new techniques abroad, the expensive and troublesome maintenance of import equipment has proposed technical barrier for domestic production of carbon black producer.
Summary of the invention
Goal of the invention of the present invention is: at the problem of above-mentioned existence, provide a kind of brand-new pyrolyzer that is used for thermals production.
The technical solution used in the present invention is such: a kind of pyrolyzer for thermals production, comprise cavity, described cavity lower end connects body of heater, described body of heater is divided into preheating section and cracking section from top to bottom successively, described cracking section lower end connects supports the section of compiling, described cavity upper end is provided with the spray combustion gas interface, and the cavity left end arranges venting, right-hand member arranges the Sweet natural gas import, and the two ends, the left and right sides of the described support section of compiling arrange and are respectively arranged with carbon black smoke outlet and accumulation of heat exhanst gas outlet; Described preheating section is pressed a layer arranged crosswise by the accumulation of heat checker brick; Described cracking section arranges that by layer wherein special-shaped gitter brick is arranged in around the gitter brick, is provided with opening in the described gitter brick, and every layer of gitter brick is provided with tongue and groove respectively by gitter brick and special-shaped gitter brick; The described support section of compiling mainly is made up of square heat resisting brick and annular heat resisting brick, and described square heat resisting brick is by layer cross arrangement, and annular heat resisting brick and body of heater circularize distribution, and orlop gitter brick edge places on the annular heat resisting brick.
As preferably: be set with heat resisting brick around the described accumulation of heat checker brick, described heat resisting brick opposite side and inboard wall of furnace body are fixed.
As preferably: the gap between the described square heat resisting brick is greater than the opening of gitter brick.
The application's described " gitter brick " and " heat resisting brick " define according to purposes, in fact material is all the same with shape, and " special-shaped gitter brick ", " square heat resisting brick " all refer to gitter brick or the heat resisting brick of non-national standard shape, design according to the position is different, concrete shape such as the application's embodiment and accompanying drawing part are described.
Natural gas pyrolysis has following characteristic: almost do not have scission reaction below 400 ℃, 400 ℃ to 1000 ℃ have scission reaction, but speed is very slow, and along with temperature raises, scission reaction speeds up more than 1000 ℃.The contriver utilizes this specific character of natural gas pyrolysis, developed syllogic pyrolyzer described in the invention: first section is preheating section, this section adopts the accumulation of heat checker brick to build by laying bricks or stones, have that contact area is big, the big characteristic in space, can make Sweet natural gas at short notice temperature bring up to 800 ℃ to 1000 ℃, avoid a large amount of cracking black carbons to generate attached collection on the accumulation of heat checker brick simultaneously, thereby the yield of carbon black is improved; Second section for the cracking section, and this section adopts special-shaped gitter brick, and this section makes the attached collection of the abundant cracking of high temperature Sweet natural gas, blowback air circulate out-of-date have enough speed make attached collection herein carbon black take away; The 3rd section for supporting the section of compiling, and the main effect of this section is the weight that supports the brick of preheating section and cracking section, compiles simultaneously that the accumulation of heat flue gas stream is removed chimney, the carbon black smoke and the blowback air that compile after the cracking flow to main bag;
In addition, the present invention is arranged on heating flame chamber (i.e. foregoing " cavity ") at the top of whole pyrolyzer, the one side convenient operating maintenance, can make the accumulation of heat checker brick on pyrolyzer top become the high-temperature zone of whole pyrolyzer on the other hand, and the import that will treat the Sweet natural gas of cracking is arranged on the top of whole pyrolyzer, the cracking natural gas that the top enters is low temperature, thereby can make the Sweet natural gas that enters at the preheating section rapidly pre-warming, this mode arranges that temperature variation is very narrow in the time of can making natural gas pyrolysis, make constant product quality, quality-improving; This layout can suitably improve regenerator temperature simultaneously, thereby makes " accumulation of heat-cracking " change-over period longer, and it is bigger to handle amount of natural gas, and the whole production plant capacity is improved.
In sum, owing to adopted technique scheme, the invention has the beneficial effects as follows: rational in infrastructure, convenient operating maintenance, and the carbon black products steady quality of production gained, throughput improves greatly.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention.
Fig. 2 is A-A sectional view among Fig. 1;
Fig. 3 is B-B sectional view among Fig. 1;
Fig. 4 is C-C sectional view among Fig. 1;
Fig. 5 is D-D sectional view among Fig. 1;
Fig. 6 is the opening sectional view of gitter brick among Fig. 1.
Mark among the figure: 1. square heat resisting brick, 11. gaps, 2. annular heat resisting brick, 3. gitter brick, 31. openings, 32. tongue and grooves, 4. special-shaped gitter brick, 5. heat resisting brick, 6. accumulation of heat checker brick, 7. cavity;
Among Fig. 1, the outlet of a. carbon black smoke, b accumulation of heat exhanst gas outlet, c. venting, the import of d. Sweet natural gas, e. fuel nozzle interface.
Embodiment
Below in conjunction with accompanying drawing, the present invention is done detailed explanation.
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the present invention, and be not used in restriction the present invention.
Shown in Fig. 1-6, a kind of pyrolyzer for thermals production, comprise cavity 7, described cavity 7 lower ends connect body of heater, and described body of heater is divided into preheating section and cracking section from top to bottom successively, and described cracking section lower end connects supports the section of compiling, described cavity 7 upper ends are provided with spray combustion gas interface e, the cavity left end arranges venting c, right-hand member arranges Sweet natural gas import d, and Sweet natural gas import d is simultaneously as swash, and swash can be cleared up body of heater; The two ends, the left and right sides of the described support section of compiling arrange and are respectively arranged with carbon black smoke outlet a and accumulation of heat exhanst gas outlet b; Described preheating section is pressed a layer arranged crosswise by accumulation of heat checker brick 6, be to be provided with identical distance between the accumulation of heat checker brick 6, be set with heat resisting brick 5 around the described accumulation of heat checker brick 6, described accumulation of heat checker brick refer to be built into the middle space lattice shape aggregate that has with straight shape gitter brick, as shown in Figure 5, described heat resisting brick 5 opposite sides and inboard wall of furnace body are fixed; Described cracking section is arranged by layer respectively by gitter brick 3 and special-shaped gitter brick 4, wherein special-shaped gitter brick 4 is arranged in around the gitter brick 3, and circumferentially fixedly accumulation of heat part is provided with opening 31 in the described gitter brick 3, and every layer of gitter brick 3 openings 31 upper and lower settings have tongue and groove 32, as shown in Figure 6; The described support section of compiling mainly is made up of square heat resisting brick 1 and annular heat resisting brick 2, described square heat resisting brick 1 is by layer cross arrangement and be placed in and mix on the earth, be gapped between every layer the square heat resisting brick 1, and this gap is greater than the opening of gitter brick 3, and the carbon black smoke after the cracking enters carbon black smoke outlet a by the gap; Annular heat resisting brick 2 circularizes distribution with body of heater, and orlop gitter brick 3 edges place on the annular heat resisting brick 2, square heat resisting brick 1 and the annular heat resisting brick 2 common weight that support gitter brick 3, special-shaped gitter brick 4, heat resisting brick 5 and accumulation of heat checker brick 6;
Opening 31 is arranged in the gitter brick 3, every layer of gitter brick 3 has tongue and groove 32 and gitter brick 3 every layer of employing staggered floor mode arranged crosswise, guarantee that Sweet natural gas carries out cracking from top to bottom, and assurance gitter brick axial restraint, be unlikely to cave in, accumulation of heat checker brick 6 and square heat resisting brick 1 also are by the cross arrangement of layer mode, and the opening in the middle of the gitter brick 3 is not blocked in assurance.
Abnormity gitter brick 4 arranges according to the mode of being interrupted several layers, be that two-layer special-shaped gitter brick 4 gitter bricks 3 are spaced apart, near 4 layers of following special-shaped gitter bricks gitter brick 3 is circumferentially fixed, topmost one deck abnormity gitter brick 4 also is used for laying heat resisting brick 5 and airtight cavity 7, guarantee that Sweet natural gas must be by the opening of gitter brick 3, " X " expression air-flow can not pass through from the edge among Fig. 1.
In the damp production stage, close Sweet natural gas import d and carbon black smoke outlet a and accumulation of heat exhanst gas outlet b, continue burner hearth is heated, guarantee that gitter brick 3 and accumulation of heat checker brick 6 can absorb abundant heat, guarantee that Sweet natural gas can reach the temperature that is cracked into carbon black;
In the production phase, close accumulation of heat exhanst gas outlet b, Sweet natural gas enters cavity 7 from Sweet natural gas import d, at this moment, natural gas temperature does not also reach the temperature of required cracking, pass through heat exchanging part, accumulation of heat checker brick 6 can increase and the contacting natural gas area, guarantee the rapid heat exchange of Sweet natural gas, reach that to be cracked into carbon black temperature required, pass through the cracking section again, carry out cracking by the opening in the gitter brick 3, last, take away carbon black smoke on the gitter brick with certain speed, go out from carbon black smoke outlet a by the gap in the square heat resisting brick 1, finish entire reaction course.
The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.