CN204882481U - A five groove reactors for active inspection of ammonia synthesis catalyst - Google Patents
A five groove reactors for active inspection of ammonia synthesis catalyst Download PDFInfo
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- CN204882481U CN204882481U CN201520430473.5U CN201520430473U CN204882481U CN 204882481 U CN204882481 U CN 204882481U CN 201520430473 U CN201520430473 U CN 201520430473U CN 204882481 U CN204882481 U CN 204882481U
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Abstract
The utility model belongs to chemical fertilizer equipment field discloses a five groove reactors for active inspection of ammonia synthesis catalyst, five groove reactors of its characterized in that comprise reaction tube, withstand voltage heat accumulator, electric heating body, middle heat preservation and shell body, a center tube has been inserted at the withstand voltage heat accumulator center of reactor, and the center tube interpolation has a thermo -well to the center tube is four reaction tubes of centre of a circle equipartition, and withstand voltage heat accumulator assembles electric heating body, middle heat preservation outward, and the reactor is fixed in concrete floor through the support. Unique five grooves designs can effectively be guaranteed each reaction tube temperature, pressure, kept the unanimity, and four reaction tubes can detect four samples simultaneously, guarantees unanimous parallelism and repeatability, great improvement work efficiency, reduced the waste of heat and feed gas.
Description
Technical field
The utility model relates to a kind of five groove reactors for ammonia synthesis catalyst activity assay, and this device is mainly used in activity assay and the evaluation of laboratory ammonia synthesis catalyst.
Background technology
Ammonia synthesis reactor is one of key equipment of Ammonia Production, and the ammonia synthesis reactor of superior performance has played crucial effect to the aspect such as productive rate, reduction system energy consumption improving ammonia.Reactor is roughly divided into continuous heat-exchanging type, multistage indirect heat exchange type and multistage cold shock formula three kinds of towers.No matter which kind of tower, technique is common to the requirement of ammonia convertor, and mainly contain: gas is evenly distributed in beds, the pressure drop of tower is little; Reaction bed temperature distribution rationally, makes full use of the activity of catalyzer; High pressure vessel space availability ratio is high: administration measure, flexible adjustment, has larger operating flexibility; Simple and reliable for structure, it is reasonable that each parts connect with insulation, and internals have the leeway of free-extension to reduce the advantages such as thermal stress in tower.An ammonia synthesis reactor of good performance, the production for ammonia synthesis has great meaning, and domestic ammonia synthesizing industry reactor tower is more, as cold pipe cooling type (single tube flow, double-jacket tube, three sleeve pipes etc.), cold shocking type, in ask heat exchange type etc.Cold pipe cooling type ammonia convertor development comparatively early, along with novel ammonia convertor (the cool sharp formula of multilayer, intermediate heat transfer type, Axial and radial) is succeeded in developing, traditional cold pipe cooling type synthetic tower is eliminated gradually, the general synthetic tower of current domestic medium and small nitrogen fertilizer plant Application comparison has Nanjing Guochang Chemical Industry Science Co., Ltd, Hu'nan Anchun High & New Technology Co. Ltd.'s ammonia convertor, and ammonia convertor main Types has Kellogg, Topsze, Casale, Uhde, Braun, GC, IIIJ etc. both at home and abroad at present.Existing be mainly large-scale reaction tower serve large-scale industry synthesis; and do not have the mini-reactor being applied to laboratory activity rating; each company provides technology to serve primarily in commercial Application; feature is large reactor, large loaded catalyst, high production capacity; the design of such reactor, premised on scale, is not suitable for being used as laboratory reaction device evaluation of catalyst activity excellent.
Summary of the invention
It is the active superior and inferior evaluating of laboratory ammonia synthesis catalyst that the utility model is mainly dealt with problems, a kind of small ammonia synthetic catalyst activity assay reactor apparatus is provided, by simulation ammonia synthesis industrial flow, control the condition such as temperature of reaction, air speed, pressure close with factory to test, thus obtain catalyst activity check data.This reactor has that volume is little, unstripped gas preheating path length, the advantages such as preheating is abundant, catalyst loading and unloading is convenient, its novel five grooves designs once can complete the inspection of four samples under the same conditions simultaneously, larger saving inspection cost, improve work efficiency.
Technical solution of the present utility model: for five groove reactors of ammonia synthesis catalyst activity assay, is characterized in that five groove reactors are made up of reaction tube, withstand voltage heat storage, electric heating body, moderate soak layer and shell body; The withstand voltage heat storage center of reactor is inserted with a pipe core, a thermocouple sheath is inserted with in pipe core, take pipe core as uniform four reaction tubes in the center of circle, the exterior electric heating body of withstand voltage heat storage, moderate soak layer, reactor is fixed on mattess by support.
Above-mentioned pipe core inner core carries out preheating, synthetic reaction for unstrpped gas, and it is in the corrosion of high temperature, high pressure and ammonia, hydrogen, selects special steel alloy that is corrosion-resistant, heat-resisting, high strength; Shell body temperature is lower, and corrosivity is few, adopts the stainless steel of general material, and bolt, nut also adopt the stainless steel of general material, polishing, good looking appearance.
Above-mentioned reactor medial launder upper end connects unstripped gas, and around four grooves are ammonia syngas outlet, and upper end interface connects the analytic system of verifying attachment, and reaction tube is connected with heat-resistant pressure-resistant heat storage by nut.
Loading catalyst in the middle of above-mentioned reaction tube, two ends filled stone sand, there is hole lower end, reacts so that unstripped gas enters beds.
Above-mentioned heat-resistant pressure-resistant heat storage is of a size of 140 × 465mm, and maximum operation (service) temperature is 650 DEG C, and pressure is 20MP, is connected with reaction tube by nut.
The electric furnace heating wire that above-mentioned electric heating body is heating cylinder and is wound on cylindrical shell, electric furnace heating wire insulate with ceramic bowl and cylindrical shell, carries out temperature programmed control by temperature control system to five groove reactors;
Above-mentioned insulation layer thickness is 30cm, fills high-temperature-resistant thermal-insulation material.
The built-in core reaction device of appeal outer casing, central filler insulation material, is fixed by bolt and ground support.
Technological merit of the present utility model is:
1, this reactor is fixed bed reactors, and catalyst filling is convenient, good seal performance.
2, this temperature of reactor, pressure stability, be easy to control, bed resistance is less.
3, the air speed of unstripped gas and temperature of reaction range of control large, accuracy is high, is conducive to the repdocutbility of catalyst sample, makes check data have more science.
4, reaction tube adopts stainless steel, conducts heat, and is more conducive to axial temperature balance in reaction tube.
5, five unique grooves are designed with four reaction tubes, and once can detect four samples simultaneously, can effectively ensure temperature between reaction tube, pressure is consistent, for the promptness of ammonia synthesis catalyst sample survey provides guarantee, larger improves work efficiency.
Accompanying drawing explanation
Fig. 1 is the utility model embodiment reactor cross section structural representation, 1-unstripped gas air intake opening, 2-syngas outlet.
Fig. 2 is reactor schematic top plan view.
Fig. 3 is reactor design schematic diagram.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described further.
Embodiment: activity assay reactor described in the present embodiment, mainly contain five groove reactors, heat-insulation layer and shell composition, its core is five groove reactors, reaction tube and accumulation of heat housing is divided into again from Fig. 1 sectional view, ammonia synthesis reaction betides in reaction tube, and 1 is raw material gas inlet, and 2 is syngas outlet.Course of reaction is: unstripped gas pressurization enters four reaction tubes through entrance 1 preheating and reacts, and after reaction, synthetic gas enters analytic system through 2.
Reaction tube seen in cross section 1, instruction 1 is intermediate raw material gas draft tube, and instruction 2 is four reaction tubes loading ammonia synthesis catalyst, and synthetic gas interface on 2 of Reactive Synthesis ammonia connects the analytic system of verifying attachment; Heat-resistant pressure-resistant heat storage is of a size of (140 × 465) mm, and maximum operation (service) temperature is 650 DEG C, and maximum working pressure (MWP) is 20MP, is connected with steel sealing with screw thread with reaction tube, is the core of reactor; The electric furnace heating wire that electric heating body is heating cylinder and is wound on cylindrical shell, electric furnace heating wire insulate with ceramic bowl and cylindrical shell, carries out temperature programmed control by temperature control system to five groove reactors; Heat-insulation layer is between heat-resistant pressure-resistant heat storage and shell body, and fill insulant material is to guarantee that core reaction actuator temperature is stablized, realization response temperature constant deviation ± 1 DEG C, and the temperature difference reducing shell and environment; Outer casing is stainless steel cylinder, is fixed by support and ground.
The core component of above-mentioned reactor is reaction tube, and Fig. 2 reaction tube is evenly arranged in around middle air intake opening ringwise, is tightly connected by nut and heat storage.The even sleeve pipe of reactor central tube built-in thermoelectric, length is 750mm.Tube length of reaction tube is 465mm, first bottom reaction tube, one deck thin copper mesh is padded during Catalyst packing, inserting granularity is again that 1.4 mm ~ 2.0 mm silica sands strike reality, be filled to position that isothermal region is determined, add the thin copper mesh of one deck again, be that 1.0 mm ~ 1.4 mm catalyzer load reaction tube and strike reality by granularity, recharge silica sand and strike real rear sealing, tighten closure nut connecting system.
Filling heat insulating wall after above-mentioned reactor assembling electrical heating wire, upward view 3 shell is connected with reactor bolt, is fixed on mattess by support, and each pipeline can carry out activity assay after connecting.
In embodiment, the material of reactor reaction pipe is stainless steel, the high-strength special type alloy steel that pipe core inner core material selection is corrosion-resistant, high temperature resistant, withstand voltage, and shell body, closure nut adopt stainless steel polishing, good looking appearance.
Claims (3)
1., for five groove reactors of ammonia synthesis catalyst activity assay, it is characterized in that five groove reactors are made up of reaction tube, withstand voltage heat storage, electric heating body, moderate soak layer and shell body; The withstand voltage heat storage center of reactor is inserted with a pipe core, a thermocouple sheath is inserted with in pipe core, take pipe core as uniform four reaction tubes in the center of circle, the exterior electric heating body of withstand voltage heat storage, moderate soak layer, reactor is fixed on mattess by support.
2. according to the five groove reactors for ammonia synthesis catalyst activity assay described in claim 1, it is characterized in that the material of reactor reaction pipe is stainless steel, to be roundedly evenly arranged in around pipe core, by closure nut sealing access activity assay system.
3. according to claim 1 or 2 for five groove reactors of ammonia synthesis catalyst activity assay, it is characterized in that the high-strength special type alloy steel that reactor central tube inner core material selection is corrosion-resistant, high temperature resistant, withstand voltage, shell body, closure nut adopt stainless steel polishing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520430473.5U CN204882481U (en) | 2015-06-23 | 2015-06-23 | A five groove reactors for active inspection of ammonia synthesis catalyst |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520430473.5U CN204882481U (en) | 2015-06-23 | 2015-06-23 | A five groove reactors for active inspection of ammonia synthesis catalyst |
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| CN204882481U true CN204882481U (en) | 2015-12-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111721888A (en) * | 2020-06-05 | 2020-09-29 | 上海核工程研究设计院有限公司 | Equipment availability test device and test method under hydrogen combustion environment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111721888A (en) * | 2020-06-05 | 2020-09-29 | 上海核工程研究设计院有限公司 | Equipment availability test device and test method under hydrogen combustion environment |
| CN111721888B (en) * | 2020-06-05 | 2022-07-22 | 上海核工程研究设计院有限公司 | Equipment availability test device and test method under hydrogen combustion environment |
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Address after: Liuhe District of Nanjing City, Jiangsu province 210048 geguan Road No. 699 Patentee after: China Petroleum & Chemical Corp. Patentee after: SINOPEC NANJING CHEMICAL RESEARCH INSTITUTE Co.,Ltd. Address before: Liuhe District of Nanjing City, Jiangsu province 210048 geguan Road No. 699 Patentee before: China Petroleum & Chemical Corp. Patentee before: Nanhua Group Research Institute |