CN208389978U - A kind of spiral shell dish-type gas distributor and its reactor of application - Google Patents

Abstract

The utility model discloses a kind of spiral shell dish-type gas distributor and its reactors of application, the spiral shell dish-type gas distributor includes distributor ontology, distributor ontology along one or more closed square tube that screw type is arranged by constituting, the inner cavity of one or more closed square tube constitutes the spiral shell disk channel of screw type, cavity is provided in the middle part of distributor ontology, more closed total square tubes have been arranged radially through distributor ontology, more total square tubes are communicated with spiral shell disk channel and cavity respectively, one or more groups of parallel heat exchanger tube mounting hole groups are offered on distributor ontology, every group of heat exchanger tube mounting hole group along distributor ontology multiple mounting holes that helically type is equidistantly arranged by forming, a piece heat exchanger tube is installed at each mounting hole, more heat exchanger tubes are communicated with spiral shell disk channel respectively.The gas distributor structure is simple, uniform air distribution, reliable, and the structure of reactor of application is simple, easy to assembly, space utilization rate is high, uniform air distribution, catalyst loading and unloading material are convenient, reaction is efficient.

Description

A kind of spiral shell dish-type gas distributor and its reactor of application

Technical field

The utility model relates to a kind of chemical industry equipments, and in particular to the reaction of a kind of spiral shell dish-type gas distributor and its application Device.

Background technique

The reactor to exchange heat generally for needs is designed with heat exchanger tube.Common heat exchanger tube spread pattern is equilateral triangle row Column, corner equilateral triangle arrangement, square arrangement and corner square arrangement, these stringings are in the form of a single, and heat exchanger tube is distributed not It is enough uniform.For catalyst in the reactor of shell side, synthesis gas is led in the tube side of heat exchanger tube, loading catalyst in shell side exists The problem of be detrimental to arrangement catalyst dumping pit, the handling of catalyst are relatively difficult.In addition, existing reactor uses total ring Pipe+heat exchange tube structure, weld seam is intensive between heat exchanger tube and endless tube, is not easy to detect, and easily reveals, and pipe bent position part easy to form High temperature.

Summary of the invention

Technical problem to be solved in the utility model is in view of the deficiencies of the prior art, to provide a kind of spiral shell dish-type gas Distributor and its reactor of application.

Technical solution adopted by the utility model to solve the above technical problems is as follows: a kind of spiral shell dish-type gas distributor, packet Distributor ontology is included, the distributor ontology is described by constituting along one or more closed square tube that screw type is arranged The inner cavity of one or more closed square tube constitutes the spiral shell disk channel of screw type, is provided with chamber in the middle part of the distributor ontology Body, through the more closed total square tubes that have been arranged radially of the distributor ontology, described more total square tubes respectively with institute The spiral shell disk channel and the cavity stated communicate, and constitute and have between the square tube of the radially adjoining of the spiral shell dish-type gas distributor There is gap, to form screw type gap on the spiral shell dish-type gas distributor, offers one on the distributor ontology The heat exchanger tube mounting hole group of group or multi-set parallel, heat exchanger tube mounting hole group described in every group is by being in spiral shell along the distributor ontology Multiple mounting holes composition that rotation type is equidistantly arranged, is each equipped with a heat exchanger tube at the mounting hole, described in more Heat exchanger tube is communicated with the spiral shell disk channel respectively.

The spiral shell dish-type gas distributor structure of the utility model is simple, uniform air distribution, reliable.The gas distributor is by along spiral shell One or more closed square tube of rotation type arrangement is constituted, and axial dimension is small, is conducive to the space-saving of reactor.It installs and uses Afterwards, cloth form of tubes of the heat exchanger tube on the gas distributor is that screw type is equidistantly arranged, and is evenly distributed, is conducive to cooling medium Reaction zone is uniformly passed in and out with reaction gas, in addition, the spiral shell formed between the square tube of the radially adjoining of composition spiral shell dish-type gas distributor Rotation type gap can be used as charging and the discharge channel of catalyst, to effectively solve that catalyst reactor is difficult to load and unload asks Topic.

A kind of reactor, including cylinder, the both ends of the cylinder are connected separately with upper cover and lower head, the cylinder It is provided with reaction zone in vivo, the upper and lower part of the cylinder is separately installed with a spiral shell dish-type gas distributor, two institutes The spiral shell dish-type gas distributor stated is located at the surface and underface of the reaction zone, each spiral shell dish-type gas Distributor includes distributor ontology, and the distributor ontology is by one or more closed square tube structure for arranging along screw type The spiral shell disk channel of screw type is constituted at the inner cavity of, one or more closed square tube, in the distributor ontology Portion is provided with cavity, through the more closed total square tubes that have been arranged radially of the distributor ontology, described more total sides Pipe is communicated with the spiral shell disk channel and the cavity respectively, constitutes the radially adjoining of the spiral shell dish-type gas distributor There is gap, to form screw type gap, the distributor ontology on the spiral shell dish-type gas distributor between square tube On offer one or more groups of parallel heat exchanger tube mounting hole groups, heat exchanger tube mounting hole group described in every group is by along the distribution Device ontology multiple mounting holes that helically type is equidistantly arranged composition is each equipped with a upright setting at the mounting hole Heat exchanger tube, the top and bottom of the heat exchanger tube be separately mounted to one described in mounting hole, heat exchange described in more The top and bottom of pipe are communicated with spiral shell disk channel described in one respectively, be provided on the upper cover cooling medium outlet, Reaction gas air inlet and catalyst charge mouth are provided with cooling medium entrance and reaction gas gas outlet, institute on the lower head The catalyst charge mouth stated, the screw type gap on the spiral shell dish-type gas distributor of top, more heat exchanger tubes shell side, lower part spiral shell disk Screw type gap and reaction gas gas outlet on type gas distributor are sequentially communicated, the cavity of lower part spiral shell dish-type gas distributor with The cooling medium outlet communicates, and the cavity of top spiral shell dish-type gas distributor is communicated with the cooling medium entrance.

The reactor of the utility model is with structure is simple, easy to assembly, space utilization rate is high, uniform air distribution, catalyst Loading and unloading is convenient, reacts efficient advantage.

The reactor of the utility model is urged in use, first passing through shell side filling of the catalyst charge mouth to more heat exchanger tubes in advance Agent, then the reacted gas air inlet of reaction gas is introduced into reactor, reaction gas passes through the spiral shell on top spiral shell dish-type gas distributor Rotation type gap enters the shell side of more heat exchanger tubes, after reaction zone reaction, passes through the spiral on the spiral shell dish-type gas distributor of lower part Enter reaction gas gas outlet behind type gap, reactor is discharged.While reaction carries out, introduced through cooling medium entrance to reactor Cooling medium, cooling medium reach in the cavity of lower part spiral shell dish-type gas distributor, are distributed to spiral shell disk channel through more total square tubes It is interior, and thus enter more heat exchanger tubes tube side, cooling medium in more heat exchanger tubes from bottom to top pass through reaction zone and with it is anti- Should gas sufficiently exchange heat after reach top spiral shell dish-type gas distributor spiral shell disk channel in, by the more of top spiral shell dish-type gas distributor The total square tube of root enters cooling medium after collecting and exports, and reactor is discharged.

In reaction process, by two uniform gas distributions of spiral shell dish-type gas distributor, heat exchanger tube is equidistantly arranged along screw type, Heat exchanger tube is evenly distributed, and is conducive to cooling medium and reaction gas uniformly passes in and out reaction zone, avoid local high temperature zone in reaction zone It generates, and gas axially flows in reaction zone along the upright heat exchanger tube that screw type is equidistantly arranged, is hit and pressure drop It is small.Constitute the screw type gap that is formed between the square tube of the radially adjoining of spiral shell dish-type gas distributor as catalyst charging with Discharge channel can effectively solve the problems, such as that catalyst reactor is difficult to load and unload.

In practical applications, the spacing size between the gap size and multiple mounting holes between square tube can be adjusted as needed, To effectively avoid the generation of local high temperature zone.One or more groups of parallel heat exchanger tube mounting holes can be opened up on distributor ontology Group, to install one or more groups of parallel heat exchanger tubes on distributor ontology, it is ensured that gas distribution efficiency improves gas distribution effect.

Preferably, being equipped with dump skip in the cylinder, the dump skip is located at the distribution of lower part spiral shell dish-type gas The underface of device offers the venthole communicated with the reaction gas gas outlet on the dump skip.

Preferably, be equipped with upper perforated plate between the upper cover and the cylinder, the cylinder and described Lower perforated plate is installed, spiral shell dish-type gas distributor described in two is separately mounted to the upper perforated plate and described between lower head Lower perforated plate on, be provided on the upper perforated plate it is multiple along screw type arrangement charging holes, multiple charging holes are just Projection is fallen on the screw type gap for the spiral shell dish-type gas distributor installed on the upper perforated plate, multiple charging holes point It is not communicated with the screw type gap on the shell side of the more heat exchanger tubes and top spiral shell dish-type gas distributor, the down tube Multiple dumping pits along screw type arrangement are provided on plate, the orthographic projection of multiple dumping pits is fallen on the lower perforated plate On the screw type gap of the spiral shell dish-type gas distributor of installation, multiple dumping pits respectively with the more heat exchanger tubes Screw type gap on shell side and lower part spiral shell dish-type gas distributor communicates.The design of above-mentioned charging hole and dumping pit, convenient for urging The handling of agent, and improve the space utilization rate of reactor.

Preferably, being equipped with dump skip in the cylinder, the dump skip, which is located on the lower perforated plate, to be installed Spiral shell dish-type gas distributor underface, offer the outlet communicated with the reaction gas gas outlet on the dump skip Hole.

Compared with prior art, the utility model has the advantages that

1, spiral shell dish-type gas distributor structure disclosed by the utility model is simple, uniform air distribution, reliable.The gas distributor By constituting along one or more closed square tube that screw type is arranged, axial dimension is small, is conducive to the space-saving of reactor.Peace After filling use, cloth form of tubes of the heat exchanger tube on the gas distributor is that screw type is equidistantly arranged, and is evenly distributed, is conducive to cold But medium and reaction gas uniformly pass in and out reaction zone, in addition, constituting shape between the square tube of the radially adjoining of spiral shell dish-type gas distributor At screw type gap can be used as charging and the discharge channel of catalyst, so that it is difficult to load and unload effectively to solve catalyst reactor The problem of.

2, reactor disclosed by the utility model uses spiral shell dish-type gas distributor, and the structure of reactor is simple, assembles Convenience, space utilization rate height, uniform air distribution, catalyst loading and unloading material are convenient, reaction is efficient.In reaction process, pass through two spiral shell disks The uniform gas distribution of type gas distributor, heat exchanger tube are equidistantly arranged along screw type, and heat exchanger tube is evenly distributed, be conducive to cooling medium and Reaction gas uniformly passes in and out reaction zone, avoids the generation of local high temperature zone in reaction zone, and gas in reaction zone along screw type etc. The upright heat exchanger tube of spacing arrangement axially flows, and is hit small with pressure drop.Constitute the radial phase of spiral shell dish-type gas distributor Charging and discharge channel of the screw type gap formed between adjacent square tube as catalyst, can effectively solve to be catalyzed in reactor Agent problem difficult to load and unload.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of reactor in embodiment；

Fig. 2 be amplify 4 times after Fig. 1 in A-A cross-sectional view；

Fig. 3 is the partial structurtes connection schematic diagram of spiral shell dish-type gas distributor and lower perforated plate in embodiment；

Fig. 4 is the top view of spiral shell dish-type gas distributor in the embodiment 5 for be equipped with heat exchanger tube.

Specific embodiment

The utility model is described in further detail below in conjunction with figure embodiment.

Embodiment 1, a kind of reactor, as shown in FIG. 1 to 3, including cylinder 1, the both ends of cylinder 1 are connected separately with envelope First 11 and lower head 12, reaction zone is provided in cylinder 1, and the upper and lower part of cylinder 1 is separately installed with a spiral shell dish-type gas Distributor, two spiral shell dish-type gas distributors are located at the surface and underface of reaction zone, each spiral shell dish-type gas distribution Device includes distributor ontology 2, and distributor ontology 2 is made of more arranged along screw type closed square tubes 21, and more closed The inner cavity of square tube 21 constitutes the spiral shell disk channel 22 of screw type, and the middle part of distributor ontology 2 is provided with cavity 23, runs through distributor sheet Body 2 has been arranged radially eight closed total square tubes 20, and eight total square tubes 20 are communicated with spiral shell disk channel 22 and cavity 23 respectively, structure At having gap between the square tube of the radially adjoining of spiral shell dish-type gas distributor, to form spiral on spiral shell dish-type gas distributor Type gap 26, offers one group of parallel heat exchanger tube mounting hole group 24 on distributor ontology 2, every group of heat exchanger tube mounting hole group 24 by It is formed along the multiple mounting holes 25 that helically type is equidistantly arranged of distributor ontology 2, one is equipped at each mounting hole 25 directly The heat exchanger tube 3 set is erected, the top and bottom of heat exchanger tube 3 are separately mounted in a mounting hole 25, the upper end of more heat exchanger tubes 3 It is communicated respectively with a spiral shell disk channel 22 with lower end, cooling medium is provided on upper cover 11 and exports 4,5 and of reaction gas air inlet Catalyst charge mouth 6 is provided with cooling medium entrance 7 and reaction gas gas outlet 8, catalyst charge mouth 6, top on lower head 12 Screw type gap 26 on spiral shell dish-type gas distributor, the shell side of more heat exchanger tubes 3, the spiral shell on the spiral shell dish-type gas distributor of lower part Rotation type gap 26 and reaction gas gas outlet 8 are sequentially communicated, cavity 23 and the cooling medium outlet 4 of lower part spiral shell dish-type gas distributor It communicates, the cavity 23 of top spiral shell dish-type gas distributor is communicated with cooling medium entrance 7, and dump skip 15 is equipped in cylinder 1, is unloaded Hopper 15 is located at the underface of lower part spiral shell dish-type gas distributor, offers on dump skip 15 and communicates with reaction gas gas outlet 8 Venthole (not shown).

A kind of reactor of embodiment 2, as shown in FIG. 1 to 3, including cylinder 1, the both ends of cylinder 1 are connected separately with envelope First 11 and lower head 12, be provided with reaction zone in cylinder 1, upper perforated plate 13 be installed between upper cover 11 and cylinder 1, cylinder 1 with Lower perforated plate 14 is installed between lower head 12, the upper and lower part of cylinder 1 is separately installed with a spiral shell dish-type gas distributor, and two A spiral shell dish-type gas distributor is separately mounted on upper perforated plate 13 and lower perforated plate 14, and two spiral shell dish-type gas distributors are located at The surface and underface of reaction zone, each spiral shell dish-type gas distributor include distributor ontology, and distributor ontology is by along spiral More closed square tubes 21 of type arrangement are constituted, and the inner cavity of more closed square tubes 21 constitutes the spiral shell disk channel 22 of screw type, point It is provided with cavity 23 in the middle part of cloth device ontology, through the eight closed total square tubes 20 that have been arranged radially of distributor ontology, eight Total square tube 20 is communicated with spiral shell disk channel 22 and cavity 23 respectively, between the square tube for constituting the radially adjoining of spiral shell dish-type gas distributor With gap, to form screw type gap 26 on spiral shell dish-type gas distributor, offer on distributor ontology one group it is parallel 3 mounting hole group 24 of heat exchanger tube, every group of 3 mounting hole group 24 of heat exchanger tube by along distributor ontology helically type equidistantly arrange it is multiple Mounting hole 25 forms, and the heat exchanger tube being uprightly arranged 3, the top and bottom point of heat exchanger tube 3 are equipped at each mounting hole 25 It is not mounted in a mounting hole 25, the top and bottom of more heat exchanger tubes 3 are communicated with a spiral shell disk channel 22 respectively, upper cover It is provided with cooling medium outlet 4, reaction gas air inlet 5 and catalyst charge mouth 6 on 11, is provided with cooling medium on lower head 12 Entrance 7 and reaction gas gas outlet 8, catalyst charge mouth 6, the screw type gap 26 on the spiral shell dish-type gas distributor of top, more Shell side, the screw type gap 26 on the spiral shell dish-type gas distributor of lower part and the reaction gas gas outlet 8 of heat exchanger tube 3 are sequentially communicated, under The cavity 23 of portion's spiral shell dish-type gas distributor and cooling medium outlet 4 communicates, the cavity 23 of top spiral shell dish-type gas distributor with Cooling medium entrance 7 communicates, and dump skip 15 is equipped in cylinder 1, and dump skip 15 is located at the spiral shell dish-type gas installed on lower perforated plate 14 The underface of body distributor offers the venthole (not shown) communicated with reaction gas gas outlet 8 on dump skip 15.

In embodiment 2, multiple charging holes 16 along screw type arrangement are provided on upper perforated plate 13, multiple charging holes 16 are just Projection fall on the screw type gap 26 for the spiral shell dish-type gas distributor installed on upper perforated plate 13, multiple charging holes 16 respectively with it is more Screw type gap 26 on the shell side and top spiral shell dish-type gas distributor of root heat exchanger tube 3 communicates, and is provided on lower perforated plate 14 more A dumping pit 17 along screw type arrangement, the orthographic projection of multiple dumping pits 17 fall in the spiral shell dish-type gas point installed on lower perforated plate 14 On the screw type gap 26 of cloth device, multiple dumping pits 17 are distributed with the shell side of more heat exchanger tubes 3 and lower part spiral shell dish-type gas respectively Screw type gap 26 on device communicates.

Embodiment 3, a kind of reactor is essentially identical with the structure of the reactor of embodiment 2, the difference is that, implement In example 3, referring to fig. 4, two groups of heat exchanger tubes, 3 mounting hole group 24 is offered on distributor ontology 2, through the radial direction of distributor ontology 2 It is provided with four closed total square tubes 20.

Embodiment 4, a kind of spiral shell dish-type gas distributor, referring to fig. 2, including distributor ontology 2, distributor ontology 2 is by edge More closed square tubes 21 of screw type arrangement are constituted, and the inner cavity of more closed square tubes 21 constitutes the spiral shell disk channel of screw type 22, the middle part of distributor ontology 2 is provided with cavity 23, has been arranged radially more closed total square tubes through distributor ontology 2 20, more total square tubes 20 are communicated with spiral shell disk channel 22 and cavity 23 respectively, constitute the radially adjoining of spiral shell dish-type gas distributor There is gap between square tube 21, to form screw type gap 26 on spiral shell dish-type gas distributor, offered on distributor ontology One group of parallel heat exchanger tube mounting hole group 24, every group of heat exchanger tube mounting hole group 24 is by along distributor ontology, helically type is equidistantly arranged Multiple mounting holes 25 of cloth form, and a heat exchanger tube 3 is equipped at each mounting hole 25, and more heat exchanger tubes 3 are logical with spiral shell disk respectively Road 22 communicates.

Embodiment 5, a kind of spiral shell dish-type gas distributor, the basic phase of structure with the spiral shell dish-type gas distributor of embodiment 4 Together, it the difference is that, in embodiment 4, is installed as shown in figure 4, offering two groups of parallel heat exchanger tubes 3 on distributor ontology 2 Hole group 24 has been arranged radially four closed total square tubes 20 through distributor ontology 2.

The course of work of the reactor of 1~embodiment of above-described embodiment 3 are as follows: in use, first passing through catalyst charge mouth 6 in advance Reactor is introduced to the shell side loading catalyst of more heat exchanger tubes 3, then by the reacted gas air inlet 5 of reaction gas, reaction gas passes through Screw type gap 26 on the spiral shell dish-type gas distributor of top enters the shell side of more heat exchanger tubes 3, after reaction zone reaction, passes through Enter reaction gas gas outlet 8 behind screw type gap 26 on the spiral shell dish-type gas distributor of lower part, reactor is discharged.What reaction carried out Meanwhile cooling medium is introduced to reactor through cooling medium entrance 7, cooling medium reaches the chamber of lower part spiral shell dish-type gas distributor It in body 23, is distributed in spiral shell disk channel 22 through more total square tubes 20, and thus enters the tube side of more heat exchanger tubes 3, cooling medium It passes through reaction zone from bottom to top in more heat exchanger tubes 3 and reaches top spiral shell dish-type gas distributor after sufficiently exchanging heat with reaction gas Spiral shell disk channel 22 in, after being collected by more total square tubes 20 of top spiral shell dish-type gas distributor enter cooling medium outlet 4, row Reactor out.In reaction process, by two uniform gas distributions of spiral shell dish-type gas distributor, heat exchanger tube 3 is equidistantly arranged along screw type Cloth, heat exchanger tube 3 are evenly distributed, and are conducive to cooling medium and reaction gas uniformly passes in and out reaction zone, avoid localized hyperthermia in reaction zone The generation in area, and the axial flowing of upright heat exchanger tube 3 that gas is equidistantly arranged in reaction zone along screw type, be hit with Pressure drop is small.The screw type gap 26 formed between the square tube 21 of the radially adjoining of spiral shell dish-type gas distributor is constituted as catalyst Charging and discharge channel, can effectively solve the problems, such as that catalyst reactor is difficult to load and unload.

Claims (5)

1. a kind of spiral shell dish-type gas distributor, including distributor ontology, it is characterised in that: the distributor ontology is by along spiral One or more closed square tube of type arrangement is constituted, and the inner cavity of one or more closed square tube constitutes screw type Spiral shell disk channel is provided with cavity in the middle part of the distributor ontology, more through being arranged radially for the distributor ontology The closed total square tube of root, described more total square tubes are communicated with the spiral shell disk channel and the cavity respectively, described in composition Spiral shell dish-type gas distributor radially adjoining square tube between have gap, thus shape on the spiral shell dish-type gas distributor At screw type gap, one or more groups of parallel heat exchanger tube mounting hole groups are offered on the distributor ontology, described in every group Heat exchanger tube mounting hole group by being formed along the distributor ontology multiple mounting holes that helically type is equidistantly arranged, Mei Gesuo A piece heat exchanger tube is installed, heat exchanger tube described in more is communicated with the spiral shell disk channel respectively at the mounting hole stated.

2. a kind of reactor, including cylinder, the both ends of the cylinder are connected separately with upper cover and lower head, the cylinder Inside it is provided with reaction zone, it is characterised in that: the upper and lower part of the cylinder is separately installed with a spiral shell dish-type gas distribution Device, spiral shell dish-type gas distributor described in two are located at the surface and underface of the reaction zone, each described Spiral shell dish-type gas distributor includes distributor ontology, and the distributor ontology is by one or more closing for arranging along screw type Square tube constitute, the inner cavity of one or more closed square tube constitutes the spiral shell disk channel of screw type, the distributor Cavity is provided in the middle part of ontology, it is described through the more closed total square tubes that have been arranged radially of the distributor ontology More total square tubes are communicated with the spiral shell disk channel and the cavity respectively, constitute the diameter of the spiral shell dish-type gas distributor To having gap between adjacent square tube, to form screw type gap on the spiral shell dish-type gas distributor, described divides One or more groups of parallel heat exchanger tube mounting hole groups are offered on cloth device ontology, heat exchanger tube mounting hole group described in every group is by along institute The distributor ontology stated multiple mounting holes that helically type is equidistantly arranged composition is each equipped with one at the mounting hole The heat exchanger tube being uprightly arranged, the top and bottom of the heat exchanger tube be separately mounted to one described in mounting hole, more institutes The top and bottom for the heat exchanger tube stated are communicated with spiral shell disk channel described in one respectively, and cooling Jie is provided on the upper cover Matter outlet, reaction gas air inlet and catalyst charge mouth are provided with cooling medium entrance on the lower head and reaction gas go out Port, the catalyst charge mouth, the screw type gap on the spiral shell dish-type gas distributor of top, more heat exchanger tubes shell side, Screw type gap and reaction gas gas outlet on the spiral shell dish-type gas distributor of lower part are sequentially communicated, lower part spiral shell dish-type gas distributor Cavity communicated with the described cooling medium outlet, the cavity of top spiral shell dish-type gas distributor and the cooling medium entrance It communicates.

3. a kind of reactor according to claim 2, it is characterised in that: dump skip is installed in the cylinder, it is described Dump skip be located at the underface of lower part spiral shell dish-type gas distributor, offer to go out with the reaction gas on the dump skip The venthole that port communicates.

4. a kind of reactor according to claim 2, it is characterised in that: pacify between the upper cover and the cylinder Equipped with upper perforated plate, lower perforated plate is installed between the cylinder and the lower head, the distribution of spiral shell dish-type gas described in two Device is separately mounted on the upper perforated plate and the lower perforated plate, is provided on the upper perforated plate multiple along screw type arrangement Charging hole, the orthographic projection of multiple charging holes falls in the spiral shell for the spiral shell dish-type gas distributor installed on the upper perforated plate On rotation type gap, multiple charging holes respectively with the shell side of the more heat exchanger tubes and top spiral shell dish-type gas distributor On screw type gap communicate, be provided with multiple dumping pits along screw type arrangement on the lower perforated plate, it is described multiple to unload The orthographic projection in material hole is fallen on the screw type gap for the spiral shell dish-type gas distributor installed on the lower perforated plate, and described is multiple Dumping pit is communicated with the screw type gap on the shell side of the more heat exchanger tubes and lower part spiral shell dish-type gas distributor respectively.

5. a kind of reactor according to claim 4, it is characterised in that: dump skip is installed in the cylinder, it is described Dump skip be located at the underface of the spiral shell dish-type gas distributor installed on the lower perforated plate, offered on the dump skip The venthole communicated with the reaction gas gas outlet.