CN103849426A - Novel cold-wall riser reactor - Google Patents
Novel cold-wall riser reactor Download PDFInfo
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- CN103849426A CN103849426A CN201410027759.9A CN201410027759A CN103849426A CN 103849426 A CN103849426 A CN 103849426A CN 201410027759 A CN201410027759 A CN 201410027759A CN 103849426 A CN103849426 A CN 103849426A
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- riser reactor
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Abstract
The invention relates to a novel cold-wall riser reactor comprising a catalyst inlet, a fluidization steam ring, a pre-lifting steam nozzle, a raw material oil feeding nozzle, a reactor shell, an insulating and wearing-resistant lining and a reaction medium outlet, wherein the fluidization steam ring and the pre-lifting steam nozzle are arranged at the lowest part of the cold-wall riser reactor, and fixedly connected with the reactor shell respectively; the catalyst inlet and the raw material oil feeding nozzle are positioned at the lower half part of the cold-water riser reactor; the raw material oil feeding nozzle is fixedly connected with the reactor shell while the reaction medium outlet is positioned at the upper half part of the cold-water riser reactor; the reactor shell is positioned at the periphery of the outer side of the cold-wall riser reactor while the insulating and wearing-resistant lining is positioned at the periphery of the inner side of the cold-wall riser reactor. By adopting the technical scheme provided by the invention, the wear resistance and the medium erosion resistance can be greatly improved, meanwhile the heat-insulating property of the equipment also can be improved, and heat loss when the reactor is used is greatly reduced.
Description
Technical field
The present invention relates to the reactor of petrochemical industry, particularly relate to a kind of novel cold wall riser reactor.
Background technology
Catalytic cracking technology is a large amount of technology that generally adopt in petrochemical refining's industry, and a large amount of heavy oil residues that produce in refining of petroleum time processing process (accounting for stock oil more than 60%) can be converted into gasoline, diesel and the petroleum gas of heavy demand in national economy by this technology.
Riser reactor is the nucleus equipment in catalytic cracking unit.This equipment is that length is about 40 meters, and diameter is about 0.5～1.0 meter, vertically arranged tubular reactor.Heavy feed stock in production process---residual oil is continuously sent into tubular reactor inside, under the condition of 500 DEG C of high temperature and catalyzer, carries out cracking reaction, and resultant of reaction is gasoline, diesel and petroleum gas etc.Catalytic cracking reaction in riser reactor carries out under fluidized state, and in tubular reactor, working medium flow velocity reaches 18～20m/s, density of catalyst reaches 50kg/m
3.At such high temperature, high density, under high flow rate catalyzer operating mode, working medium is quite serious to the erosive wear of tubular reactor inwall.
Fig. 1 is the structural representation of existing known riser reactor, and Fig. 2 is the partial enlarged drawing of reactor shell and external insulation material layer I in Fig. 1.As depicted in figs. 1 and 2, existing known riser reactor design is to adopt refractory alloy steel to add the hot-wall structure of outer insulation, and this structure exists many disadvantages:
1, the housing of reactor must be selected refractory alloy steel;
2, the wall of reactor is owing to washed away by high-speed high concentration catalyst medium flow, often worn out, causes the high-temperature oil gas spontaneous combustion that leaks to cause fire, and potential safety hazard is very big;
3, the outer insulation of reactor easily damages and causes thermosteresis large.
Because the disadvantage that above-mentioned existing riser reactor exists need to be changed the riser reactor structure of design in the past.Practical experience and the expertise of the inventor based on being engaged in this type of product design manufacture and enriching for many years, and coordinating the utilization of scientific principle, actively research and innovation in addition, to founding a kind of novel cold wall riser reactor, can improve general existing riser reactor, make it have more practicality.Through constantly research, design, and after repeatedly studying sample and improving, finally create the present invention who has practical value.
Summary of the invention
The object of the invention is to, overcome the defect that existing riser reactor exists, and provide a kind of riser reactor of novel texture, technical problem to be solved is greatly to improve wear-resisting media-resistant performance of flushing, can also improve the heat-proof quality of equipment simultaneously, thermosteresis while greatly reducing reactor use, thus be more suitable for practicality.
The object of the invention to solve the technical problems is to adopt following technical scheme to realize.A kind of novel cold wall riser reactor proposing according to the present invention, comprising: catalyst inlet, fluidization steam vapor ring, pre-lift vapor-nozzle, stock oil feed nozzle, reactor shell, insulating and wearing-resistant lining, reaction medium outlet;
Wherein fluidization steam vapor ring and pre-lift vapor-nozzle are the belows that is positioned at this cold wall riser reactor, and be fixedly connected with reactor shell respectively, catalyst inlet and stock oil feed nozzle are the lower parts that is positioned at this cold wall riser reactor, and stock oil feed nozzle is fixedly connected with reactor shell, and reaction medium outlet is positioned at upper part of this cold wall riser reactor, reactor shell is positioned at the outer periphery of this cold wall riser reactor, and insulating and wearing-resistant lining is positioned at around the inner side of this cold wall riser reactor.
Object of the present invention and solve its technical problem and can also be further achieved by the following technical measures.
Aforesaid novel cold wall riser reactor, wherein the quantity of stock oil feed nozzle is two.
By technique scheme, a kind of novel cold wall riser reactor of the present invention at least has following advantages: the present invention can improve wear-resisting media-resistant performance of flushing, can improve the heat-proof quality of equipment and reduce reactor the thermosteresis while use.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to better understand technique means of the present invention, and can be implemented according to the content of specification sheets, and for above and other object of the present invention, feature and advantage can be become apparent, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, be described in detail as follows.
Brief description of the drawings
Fig. 1 is the structural representation of existing known riser reactor.
Fig. 2 is the partial enlarged drawing of reactor shell and external insulation material layer I in Fig. 1.
Fig. 3 is the structural representation of cold wall riser reactor of the present invention.
Fig. 4 is the partial enlarged drawing of reactor shell and insulating and wearing-resistant lining II in Fig. 3.
[main element nomenclature]
1: catalyst inlet 2: fluidization steam vapor ring
3: pre-lift vapor-nozzle 4: stock oil feed nozzle
5: reactor shell 6: insulating and wearing-resistant lining
6': external insulation material layer 7: reaction medium outlet
Embodiment
Technique means and effect of taking for reaching predetermined goal of the invention for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, to a kind of novel cold its embodiment of wall riser reactor, structure, feature and effect thereof of proposing according to the present invention, be described in detail as follows.
Fig. 3 is the structural representation of cold wall riser reactor of the present invention, and Fig. 4 is the partial enlarged drawing of reactor shell and insulating and wearing-resistant lining II in Fig. 3.
As shown in Figure 3 and Figure 4, a kind of novel cold wall riser reactor of the present invention, comprising: catalyst inlet 1, fluidization steam vapor ring 2, pre-lift vapor-nozzle 3, stock oil feed nozzle 4, reactor shell 5, insulating and wearing-resistant lining 6, reaction medium outlet 7; Wherein fluidization steam vapor ring 2 and pre-lift vapor-nozzle 3 are the belows that are positioned at this cold wall riser reactor, and be fixedly connected with reactor shell 5 respectively, catalyst inlet 1 and stock oil feed nozzle 4 are the lower parts that are positioned at this cold wall riser reactor, and stock oil feed nozzle 4 is fixedly connected with reactor shell 5, and reaction medium outlet 7 is positioned at upper part of this cold wall riser reactor, reactor shell 5 is positioned at the outer periphery of this cold wall riser reactor, and insulating and wearing-resistant lining 6 is positioned at around the inner side of this cold wall riser reactor.Wherein the quantity of stock oil feed nozzle 4 is two.
Object of the present invention adopts following scheme to realize:
The principle of work of a kind of novel cold wall riser reactor of the present invention is: under 2 effects of fluidization steam vapor ring, the pre-lift steam (or dry gas) entering from pre-lift vapor-nozzle 3 up promotes, now temperature is that the catalyzer of 700 DEG C enters cold wall riser reactor inner bottom part from catalyst inlet 1, under the effect of bottom fluidization steam, form fluidized state, under pre-lift steam (or dry gas) effect, upwards promote, the stock oil entering from stock oil feed nozzle 4 carries out scission reaction under high temperature catalyst effect, temperature of reaction in this riser reactor is 500 DEG C.After reaction, resultant together flows out from reaction medium outlet 7 with the catalyzer that participates in reaction, enters next equipment settling vessel and carries out gas-oil separation.Because whole reaction process is to carry out at 500 DEG C, and high speed catalyst stream (18～20m/s) washes away, weares and teares very severe to wall of reactor, so be lining with insulating and wearing-resistant lining 6 at reactor wall, play heat insulating and prevent catalyst stream washing away wall of reactor.
The hot wall of riser reactor is in the past added to outer insulation construction and change liner casting type insulating and wearing-resistant lining 6 materials in the cold wall of riser reactor into.So, greatly improved riser reactor medium resistance to erosion abrasion resistance properties, heat preservation and insulation also greatly improves.Separately because becoming cold wall (≤300 DEG C) wall material selection from hot wall (>=500 DEG C), reactor wall working condition also can become general carbon steel from original heat-resisting alloy steel, device fabrication life cycle extends greatly, safe reliability improves greatly, wall selection simultaneously becomes present plain carbon stool from original heat-resisting alloy steel, cost, economic benefit increases.This cold wall type riser reactor generally adopts at each refinery at present.
The above, it is only preferred embodiment of the present invention, not the present invention is done to any pro forma restriction, although the present invention discloses as above with preferred embodiment, but not in order to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, when can utilizing the technology contents of above-mentioned announcement to make a little change or being modified to the equivalent embodiment of equivalent variations, in every case be the content that does not depart from technical solution of the present invention, foundation technical spirit of the present invention is to any simple modification made for any of the above embodiments, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (2)
1. a novel cold wall riser reactor, is characterized in that comprising: catalyst inlet (1), fluidization steam vapor ring (2), pre-lift vapor-nozzle (3), stock oil feed nozzle (4), reactor shell (5), insulating and wearing-resistant lining (6), reaction medium outlet (7);
Wherein fluidization steam vapor ring (2) and pre-lift vapor-nozzle (3) are the belows that is positioned at this cold wall riser reactor, and be fixedly connected with reactor shell (5) respectively, catalyst inlet (1) and stock oil feed nozzle (4) are the lower parts that is positioned at this cold wall riser reactor, and stock oil feed nozzle (4) is fixedly connected with reactor shell (5), and reaction medium outlet (7) is positioned at upper part of this cold wall riser reactor, reactor shell (5) is positioned at the outer periphery of this cold wall riser reactor, and insulating and wearing-resistant lining (6) is positioned at around the inner side of this cold wall riser reactor.
2. novel cold wall riser reactor according to claim 1, the quantity that it is characterized in that stock oil feed nozzle (4) is two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410027759.9A CN103849426A (en) | 2014-01-13 | 2014-01-13 | Novel cold-wall riser reactor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410027759.9A CN103849426A (en) | 2014-01-13 | 2014-01-13 | Novel cold-wall riser reactor |
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| CN103849426A true CN103849426A (en) | 2014-06-11 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1657150A (en) * | 2004-12-16 | 2005-08-24 | 中国石油化工集团公司 | Riser reactor for hydrocarbon fluidized catalytic conversion |
| CN101270298A (en) * | 2008-01-07 | 2008-09-24 | 中国石油大学(北京) | Lift pipe reactor |
| CN203715574U (en) * | 2014-01-13 | 2014-07-16 | 洛阳智邦石化设备有限公司 | Novel cold wall riser reactor |
-
2014
- 2014-01-13 CN CN201410027759.9A patent/CN103849426A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1657150A (en) * | 2004-12-16 | 2005-08-24 | 中国石油化工集团公司 | Riser reactor for hydrocarbon fluidized catalytic conversion |
| CN101270298A (en) * | 2008-01-07 | 2008-09-24 | 中国石油大学(北京) | Lift pipe reactor |
| CN203715574U (en) * | 2014-01-13 | 2014-07-16 | 洛阳智邦石化设备有限公司 | Novel cold wall riser reactor |
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Application publication date: 20140611 |