CN107537409B - Cascade oxidation reaction method, assembly and application thereof - Google Patents
Cascade oxidation reaction method, assembly and application thereof Download PDFInfo
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- CN107537409B CN107537409B CN201610474534.7A CN201610474534A CN107537409B CN 107537409 B CN107537409 B CN 107537409B CN 201610474534 A CN201610474534 A CN 201610474534A CN 107537409 B CN107537409 B CN 107537409B
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Abstract
A cascade oxidation reaction assembly comprises a plurality of components which are overlapped to form at least more than 1 layer, wherein through holes are arranged on each component, and the aperture ratio of the through holes is 2.5:1-25:1. The cascade oxidation reaction component provided by the utility model is composed of more than 1 layer of components, and the pore diameter of the lower layer of components is smaller than that of the upper layer of components, so that the continuously consumed reaction raw materials continuously move downwards along with the continuous reduction of the volume, and in the movement process, the gas-liquid redistribution is driven, and the reaction contact area of the materials is increased. The raw materials with different reaction rates are reacted on different reaction layers (namely, the reaction of an upper layer component with large volume and the reaction of a lower layer component with small volume) to form a three-dimensional cascade reaction system, so that the production efficiency is improved.
Description
Technical Field
The present utility model relates to a process for chemical reactions, and more particularly to a process for the staged oxidation reaction, and to the organization of the process for its implementation, and to the use of the assembly in iron oxide production facilities and production.
Background
Iron oxide is an important iron oxide, and is widely used as a colorant in industries such as paint, ink and rubber, and also widely used for coloring paints, rubber, plastic cosmetics, building finishing materials, precision hardware, optical glass, enamel, religious articles, leather, magnetic alloy and high-grade alloy steel, and as a pigment for coloring paints, rubber, plastic and building, and polishing agents for materials such as glass, precious stone and metal.
Various methods can produce iron oxides, such as those commonly found in: iron sheet and ferrous sulfate generated by sulfuric acid are prepared by oxidation-reduction reaction. Depending on the difference in unit cell structure of iron oxides, there are several common iron oxides, iron black, iron yellow and iron red, and these iron oxides of different colors are determined by the seed crystals in production.
The Chinese patent No. ZL03128113.3 discloses a method for synchronously producing iron oxide black by an organic product through an iron powder reduction method, wherein iron powder, a reaction medium and water are put into a reduction reaction tank, steam is used for heating and activating for 0.5-1 hour, the reaction temperature is 50-95 ℃, the reaction pressure is normal pressure, the stirring speed is 60-12 revolutions per minute, the PH value in the reduction reaction tank is 5-8, the organic raw materials are continuously dropwise added in the reaction process, the iron powder, the reaction medium and the water are intermittently replenished, the weight ratio of the organic raw materials, the iron powder, the reaction medium and the water is always maintained to be 1:0.5-1.5:0.01-0.1:2-5, and the suspended matters of the organic product and the iron mud are continuously discharged from a discharge port of the reduction reaction tank; filtering, washing, screening, filtering, drying and the like to obtain the suspension generated by the reaction.
The Chinese patent ZL201110008756.7 discloses a high-purity iron oxide black pigment and a production method thereof, wherein ferrous sulfate and sodium hydroxide are adopted to react in an oxidation barrel. Under alkaline condition, generating ferrous hydroxide sol, introducing steam, heating to react, introducing air to oxidize after reaching a specified temperature, and reacting for a certain time to obtain the required high-purity iron oxide black.
The utility model patent ZL201110062503.8 discloses a method for preparing iron oxide red pigment by using nitroxyl chloride tail gas, which adopts the tail gas in the high-temperature chlorination production process of chloronitrobenzene, and mixes the tail gas with iron mud generated after nitroreduction reaction of iron powder, and then introduces steam to heat the mixture to 90-100 ℃, and simultaneously stirs the mixture to dissolve the chemical iron mud, and tracks and determines Fe in the solution 3+ The content of Fe and the addition amount of the iron sludge enable Fe in the solution 3+ Filtering after the content reaches 110-130 g/L, adding ammonia water into the filtrate to adjust the pH value to 6-9, enabling ferric iron to generate ferric hydroxide, centrifugally separating, taking solid, and heating to 105-115 ℃ to obtain the iron oxide red pigment.
The method for preparing the iron oxide has the advantages that the reaction scale is small, the volume of the reaction vessel is difficult to expand, and more waste materials at the bottom of the reaction vessel after discharging are needed to be manually introduced into the reaction vessel for cleaning. The waste material at the bottom can not fully contact with air to react incompletely, so that the material is lost and wasted.
Chinese patent No. ZL200920212985.9 discloses an oxidation drum for preparing ferric oxide, which comprises a drum-shaped drum body, an iron sheet inlet, a seed crystal inlet, a water inlet, a ferrous sulfate inlet, a steam inlet, an air inlet, a discharge port, a truncated cone and a middle partition plate with small holes, wherein the large end of the truncated cone is connected with the lower end of the drum body, the iron sheet inlet is arranged at the top of the drum body, the seed crystal inlet, the water inlet and the ferrous sulfate inlet are respectively arranged at the upper part of the drum body, the steam inlet is arranged at the lower part of the truncated cone, and the air inlet and the discharge port are respectively arranged at the bottom of the truncated cone. The utility model is used for preparing the oxidation barrel of ferric oxide, the discharging is thorough, the garbage is not required to be cleaned, the labor intensity is reduced, the field condition is improved, the product loss is reduced, the air (steam) is directly introduced from the bottom, the pipeline maintenance is convenient, the taper bottom is combined, and the deposited iron sheet slides to the bottom and is blown by air to continue to participate in the reaction, so that the utilization rate of raw materials can be improved.
The Chinese patent application ZL201020656765.8 discloses a liquid-solid phase transfer reactor for preparing ferrous nitrate solution, which comprises a closed shell, an inner cylinder, a separation plate, a circulating outlet, a material inlet, an acid inlet and a material outlet, wherein the acid inlet is arranged between the shell and the inner cylinder, the shell is formed by connecting a cylindrical section and a conical section, the separation plate is arranged at the lower part of the cylindrical section, the inner cylinder is fixed on the separation plate, distribution holes are arranged on the separation plate at the bottom of the inner cylinder, the material inlet is arranged at the upper part of the cylindrical section, the circulating outlet is arranged on the shell above the separation plate, and the material outlet is arranged at the bottom of the conical section. The reactor adopts external circulation homogenizing reaction, can avoid back mixing, can reduce the generation of byproducts such as high-valence iron, nitrogen oxides and the like, has no slag scrap iron deposition, has capacity self-adaptive overflow regulation, is convenient for controlling the system temperature, has high product purity, has no waste gas emission, and shortens the reaction time.
Chinese patent application 201310632149.7 discloses a device for preparing iron oxide yellow, comprising a first sample injection device, a second sample injection device, an air intake device, a reaction vessel, a heating device and a pH adjusting device. The inlet of the reaction vessel is connected with the outlet of the first sample injection device, the outlet of the second sample injection device and the outlet of the air inlet device, and the outlet of the alkali chamber is connected with the inlet of the second sample injection device. The alkaline liquor generated by the bipolar membrane electrodialysis device is used as an alkaline neutralizer to regulate the pH value of the reaction solution in the process of preparing the iron oxide yellow, so that the cost of producing the iron oxide yellow is effectively reduced, and meanwhile, the utility model also effectively treats the inorganic salt waste liquor generated in the process of preparing the iron oxide yellow, thereby realizing the recovery and reutilization of resources.
Chinese patent application 201510070457.4 discloses an oxidation reaction apparatus comprising a reaction zone, a gas-liquid distribution zone and a material support. The gas-liquid distribution area is arranged below the reaction area, and the material support piece is used for supporting reactants in the first containing cavity and is arranged at the bottom end of the reaction area. The gas-liquid distribution area comprises a second containing cavity, a gas collection chamber, more than 1 gas distribution pipes and air vents, wherein the gas collection chamber is arranged in the second containing cavity, one end of each gas distribution pipe is arranged at the periphery of the gas collection chamber, and the air vents are arranged below the gas collection chamber. The device still has reaction "dead zone" in practice, after long-time use, still need work manual work to enter into the reaction device and carry out artifical clear material, is unfavorable for the going on of safety in production.
For this reason, the skilled man also thinks that the provision of several uprights in the reaction device to solve the reaction "dead zone" remains difficult to solve from the practical point of view. The iron sheet as the reaction raw material is placed in the net bag to suspend the reaction, and the net bag is turned over in the reaction process to try to solve the reaction dead zone. The technical scheme needs to carry out open reaction, needs continuous and large quantity of supplementary steam, has larger energy consumption and serious environmental heat pollution, and is not beneficial to the safe production.
Therefore, the various reaction devices disclosed at present can not solve the problem of reaction dead zone while realizing the economic requirement of preparing the iron oxide, and the technical scheme for preparing the iron oxide is necessary to be continuously explored and perfected.
Disclosure of Invention
The utility model aims to provide a cascade oxidation reaction assembly, which improves the efficiency of oxidation reaction and economic benefit.
The utility model further aims to provide a cascade oxidation reaction assembly, which effectively reduces the occurrence of a reaction dead zone, is beneficial to continuous production in a large scale, avoids operators from going deep into a reaction device to clean materials, and improves the safety of production.
It is still another object of the present utility model to provide a cascade oxidation reaction module that facilitates the input of large volumes and weight materials in production, resulting in improved uniformity of the oxidation reaction system, increased reaction efficiency, and increased reaction yield.
It is still another object of the present utility model to provide a cascade oxidation reaction module that facilitates the input of large volumes and weight materials in production, so that the uniformity of the oxidation reaction system is improved, the production preparation time is shortened, and the equipment utilization rate is increased.
It is yet another object of the present utility model to provide a cascade oxidation reaction assembly for use in an iron oxide reaction apparatus.
It is yet another object of the present utility model to provide a cascade oxidation reaction assembly for use in the production and large scale production of iron oxides.
It is still another object of the present utility model to provide a cascade oxidation reaction method that improves the efficiency of the oxidation reaction and improves the economic efficiency.
According to the cascade oxidation reaction method provided by the utility model, the reaction raw materials are placed on the upper component with the through holes, cannot completely pass through the through holes of the upper component, then gas and liquid are introduced and oxidation reaction is carried out, the reaction raw materials are consumed and become small in volume along with the progress of the reaction, and further can completely pass through the through holes of the upper component and fall on the lower component step by step, and cannot completely pass through the through holes of the lower component, then oxidation reaction is continuously carried out, and the reaction raw materials are consumed and become small in volume along with the progress of the reaction, and further can completely pass through the through holes of the lower component and continuously react step by step and fall to the bottom of the reaction zone step by step.
According to the cascade oxidation reaction method provided by the utility model, the reaction raw material is placed on the first layer component with the first through hole, the reaction raw material cannot completely pass through the first through hole, then gas and liquid are introduced and oxidation reaction is carried out, the reaction raw material is consumed and becomes small in volume along with the progress of the reaction, and further can completely pass through the first through hole, fall on the second layer component with the second through hole, and cannot completely pass through the second through hole, then continue to carry out oxidation reaction, and along with the progress of the reaction, the reaction raw material is consumed, becomes small in volume, further can completely pass through the second through hole, fall on the third layer component with the third through hole, and cannot completely pass through the third through hole, and continue to carry out oxidation reaction, and along with the progress of the reaction, the reaction raw material is consumed, becomes small in volume, and further can completely pass through the third through hole, and fall on the bottom of the reaction zone.
In the cascade oxidation reaction method provided by the utility model, the reaction raw materials are continuously consumed along with the progress of oxidation reaction, and fall into the reaction zone of the next stage to continue reaction under the action of gravity, so that the reaction raw materials move, the reaction efficiency is improved, and the formation of a reaction dead zone is reduced.
The utility model provides a cascade oxidation reaction assembly, which comprises at least 1 layer of components, wherein the components comprise a plurality of warp grid bars and a plurality of weft grid bars, the space between the warp grid bars is more than or equal to 5mm and less than or equal to 500mm, and the space between the weft grid bars is more than or equal to 5mm and less than or equal to 500mm.
The utility model provides another cascade oxidation reaction assembly which comprises a plurality of components which are overlapped to form at least more than 2 layers, wherein through holes are arranged on each component, and the aperture ratio of the through holes is 2.5:1-25:1. The height of the component is 20 mm-1000 mm.
Another cascade oxidation reaction assembly provided by the utility model comprises
A first member on which a plurality of first through holes are provided;
the second component is arranged above the first component and further comprises a plurality of second through holes.
The aperture ratio of the second component to the first component is 2.5:1-25:1.
Another cascade oxidation reaction assembly provided by the utility model comprises
The first member comprises a plurality of first warp grid bars and a plurality of first weft grid bars, the distance between the first warp grid bars is more than or equal to 5mm and less than 80mm, and the distance between the first weft grid bars is more than or equal to 5mm and less than 80mm;
the second component is arranged above the first component and further comprises a plurality of second warp grid bars and a plurality of second weft grid bars, the distance between each second warp grid bar is more than or equal to 80mm and less than or equal to 500mm, and the distance between each second weft grid bar is more than or equal to 80mm and less than or equal to 500mm.
The distance between the first component and the second component is less than or equal to 1000mm.
The aperture ratio of the second component to the first component is 2.5:1-25:1.
The heights of the first component and the second component are respectively 20 mm-1000 mm, and the values are the same or different, such as: the height of the first component is 20 mm-200 mm, and the height of the second component is 30 mm-700 mm, so that the movement and full oxidation of the reaction raw materials are facilitated.
Another cascade oxidation reaction assembly provided by the utility model comprises
The first member comprises a plurality of first warp grid bars and a plurality of first weft grid bars, the distance between the first warp grid bars is more than or equal to 5mm and less than 20mm, and the distance between the first weft grid bars is more than or equal to 5mm and less than 20mm;
the second member is arranged above the first member and further comprises a plurality of second warp grid bars and a plurality of second weft grid bars, the spacing of each second warp grid bar is more than or equal to 20mm and less than 80mm, and the spacing of each second weft grid bar is more than or equal to 20mm and less than 80mm;
and the third member is arranged above the second member and further comprises a plurality of third warp grid bars and a plurality of third weft grid bars, the space between the third warp grid bars is more than or equal to 80mm and less than or equal to 500mm, and the space between the third weft grid bars is more than or equal to 80mm and less than or equal to 500mm.
The heights of the components are respectively 20 mm-1000 mm, and the values are the same or different, such as: the layer height of the first component is 20 mm-100 mm, the layer height of the second component is 30 mm-200 mm, and the layer height of the third component is 40 mm-700 mm so as to be beneficial to the movement and full oxidation of the reaction raw materials.
The spacing between the components is less than or equal to 1000mm.
The aperture ratio of the second component to the first component is 2.5:1-25:1, and the aperture ratio of the third component to the second component is 2.5:1-25:1.
In order to facilitate the movement and full oxidation of the reaction raw materials, the through hole of the component is formed by the first edge, the second edge, the third edge and the fourth edge, the intersection angle of the first edge and the second edge is 30-90 degrees, the intersection angle of the second edge and the third edge is 90-150 degrees, the intersection angle of the third edge and the fourth edge is 30-90 degrees, and the intersection angle of the fourth edge and the first edge is 90-150 degrees. Preferred shapes of the through holes are as follows: diamond, rectangular, trapezoidal, square, etc.
The utility model provides another cascade oxidation reaction assembly which also comprises a fourth component, and is arranged below the first component to collect reaction residues so as to facilitate the reaction residues to move and react further downwards and be discharged from an outlet below the fourth component.
The cascade oxidation reaction components provided by the utility model are arranged on the iron oxide reaction device, so that the dead zone of the reaction can be effectively avoided, and the problem that the quality of the product is affected because the reaction raw materials (such as iron sheet) cannot be fully oxidized is solved.
The utility model provides a reaction device for producing iron oxide, which comprises a cascade oxidation reaction component.
The utility model provides another reaction device for producing the iron oxide, which also comprises
The reaction zone comprises a first containing cavity, a feed port and a cover body, wherein the cover body covers the feed port;
the gas-liquid distribution area is arranged below the reaction area and comprises a second containing cavity, a gas collection chamber, more than 1 gas distribution pipe and a vent; the second containing cavity is communicated with the first containing cavity, the gas collecting chamber is arranged in the second containing cavity, one end of each gas distribution pipe is arranged at the periphery of the gas collecting chamber, the air vent is arranged below the gas collecting chamber (such as but not limited to the bottom of the second containing cavity),
the inverted cone hopper is arranged in the gas collection chamber so as to be beneficial to gas-liquid distribution, and especially improves the efficiency of gas in the gas distribution pipe so as to be beneficial to the full oxidation of reaction raw materials.
The reaction device for producing the iron oxide comprises 1-32 gas distribution pipes, such as: but are not limited to, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, and 15. The counting mode is that the number of the parts extending from the joint with the gas collection chamber to the periphery is 1. If the gas distribution pipe passes through the gas collection chamber, two ends of the gas distribution pipe are arranged at two sides of the periphery of the gas collection chamber, the number of the gas distribution pipe is 2.
Each gas distribution pipe is provided with at least 1 air hole, and the total area of the air holes is larger in the direction extending from one end connected with the gas collection chamber to the periphery, for example: the circumference of the air holes grows or the number of the air holes increases. The uniformity of gas distribution can be improved by adjusting the opening area of the communication part of each gas distribution pipe and the gas collection chamber.
In order to facilitate the input of reactants such as iron sheets with large volume and heavy weight and ensure the sealing performance of the oxidation reaction device, the oxidation reaction device also comprises a sealing mechanism which is respectively arranged at the positions of the cover body and the feed inlet, such as: but are not limited to, gaskets, O-rings, and return structures. In order to facilitate the input of reactants such as iron sheets with large volume and heavy weight and ensure the sealing performance of the oxidation reaction device, a sealing groove body (such as but not limited to U-shaped) is arranged on the wall of the opening of the feed inlet, the sealing groove body comprises a first groove body side wall and a second groove body side wall, the distance between the first groove body side wall and the opening is larger than that between the second groove body side wall and the opening, and liquid is contained in the sealing groove body; the radial outer edge of the cover body at least extends to or covers the side wall of the second groove body.
Preferably, the cover body is provided with a sealing element, such as: but are not limited to, dovetail fittings, closed-around risers, and closed-around connectors, etc. The sealing element is arranged in the sealing groove body, and forms a first cavity and a second cavity with the side wall of the first groove body and the side wall of the second groove body respectively, and the first cavity is communicated with the second cavity. The volume of the first chamber is larger than or equal to that of the second chamber, so that a better liquid sealing effect can be achieved.
The reaction device for producing the iron oxide also comprises a liquid inner circulating pipe, wherein two ends of the liquid inner circulating pipe are open and are arranged on the inner side of the wall of the oxidation reaction device, one end of the liquid inner circulating pipe is arranged in the reaction zone, and the other end of the liquid inner circulating pipe is arranged in the gas-liquid distribution zone.
The reaction device for producing the iron oxide is suitable for preparing and producing substances requiring gas-liquid-solid three-phase reaction.
The technical scheme of the utility model has the beneficial effects that:
the cascade oxidation reaction component provided by the utility model is composed of more than 1 layer of components, and the pore diameter of the lower layer of components is smaller than that of the upper layer of components, so that the reaction raw materials which are continuously consumed continuously move to the lower layer along with the continuous decrease of the volume. In the motion, the raw material is fully contacted with the gas and the liquid, so that the gas and the liquid are also driven to be redistributed, and the reaction contact area of the material is increased. The raw materials with different reaction rates are reacted on different reaction layers (namely, the reaction of an upper layer component with large volume and the reaction of a lower layer component with small volume) to form a three-dimensional cascade reaction system, so that the production efficiency is improved.
The cascade oxidation reaction component provided by the utility model ensures that the reaction raw materials move downwards along with the progress of the reaction, improves the air permeability, obviously reduces the pressure of the reaction, improves the reaction mass transfer performance, shortens the reaction time, and solves the problem of reaction dead zone caused by compaction of the reaction raw materials in the existing reaction device, and the reaction is more complete and full.
The cascade oxidation reaction component provided by the utility model is applied to a reaction device for producing iron oxide, solves the problem that the color saturation of a product is reduced along with the increase of production batches, improves the color saturation of the product, and improves the quality of the product.
The cascade oxidation reaction assembly provided by the utility model is applied to a reaction device for producing the iron oxide, does not need manual material cleaning, shortens the production preparation time, improves the equipment utilization rate, realizes continuous production of the iron oxide, and reduces the production cost.
Drawings
FIG. 1 is a schematic view showing the structure of an embodiment of a reaction apparatus for producing iron oxide according to the present utility model;
FIG. 2 is an enlarged schematic view of a first embodiment of the first member of the present utility model;
FIG. 3 is a schematic view of a second member of an embodiment of the present utility model in a partially enlarged configuration;
fig. 4 is a partially enlarged schematic construction of a third embodiment of the present utility model.
Detailed Description
The technical scheme of the present utility model is described in detail below with reference to the accompanying drawings. The embodiments of the present utility model are only for illustrating the technical scheme of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical scheme of the present utility model, which is intended to be covered by the scope of the claims of the present utility model.
FIG. 1 is a schematic view showing the structure of an embodiment of a reaction apparatus for producing iron oxide according to the present utility model. As shown in FIG. 1, the reaction apparatus of the present utility model has a conical bottom shape including a reaction zone 100 and a gas-liquid distribution zone 200. In the gas-liquid distribution area 200, a cascade oxidation reaction assembly 300 is disposed under the reaction area 100, wherein a first member 310 is disposed at the bottom end of the reaction area 100, a second member 320 is disposed above the first member 310, and a third member 330 is disposed above the second member 320.
Fig. 2 is an enlarged schematic view of a first member according to an embodiment of the present utility model. As shown in fig. 2, the first member 310 includes a plurality of first warp beads 311 and a plurality of first weft beads 312, and a pitch of each first warp bead is 5mm or more and 20mm or less, and a pitch of each first weft bead is 5mm or more and 20mm or less.
Fig. 3 is a partially enlarged schematic construction of an embodiment of the second member of the present utility model. As shown in fig. 3, the second member 320 includes a plurality of second warp beads 321 and a plurality of second weft beads 322, each having a pitch of 20mm or more and 80mm or less, and each having a pitch of 20mm or more and 80mm or less.
Fig. 4 is a partially enlarged schematic construction of a third embodiment of the present utility model. As shown in fig. 4, the third member 330 includes a plurality of third warp beads 331 and a plurality of third weft beads 332, each having a pitch of 80mm or more and 500mm or less, and each having a pitch of 80mm or more and 500mm or less.
In this embodiment, through holes are formed on the first member 310, the second member 320 and the third member 330, each through hole is surrounded by a first edge, a second edge, a third edge and a fourth edge, the intersection angle of the first edge and the second edge is 30 ° to 90 °, the intersection angle of the second edge and the third edge is 90 ° to 150 °, the intersection angle of the third edge and the fourth edge is 30 ° to 90 °, and the intersection angle of the fourth edge and the first edge is 90 ° to 150 °, so that the shape of the through hole is as follows: diamond, rectangular, trapezoidal, square, etc. The aperture ratio of the second member 320 to the first member 310 is 2.5:1 to 25:1, and the aperture ratio of the third member 330 to the second member 320 is 2.5:1 to 25:1.
Taking iron oxide preparation and production as an example, iron scale is placed in the first cavity 110 of the reaction zone, and the cascade oxidation reaction assembly 300 is used to support the reactant, iron scale.
The gas-liquid distribution area 200 also includes a plenum 220, more than 1 gas distribution tubes 230, and vents 240. The vent 240 is positioned below the plenum 220. The plenum 220 is disposed in the second cavity 210, and one end of each gas distribution pipe 230 is disposed at a peripheral edge of the plenum 220. An inverted cone hopper 340 is positioned within the plenum 220 to facilitate sufficient oxidation of the reaction materials.
Inside the wall of the oxidation reaction apparatus, there is also provided a liquid circulation pipe 600 having both ends open, one end being placed in the reaction zone 100 and the other end being placed in the gas-liquid distribution zone 200. In this embodiment, the liquid circulation tube 600 is disposed above the material support 300, and the other end is disposed below the plenum 200. The arrangement of the liquid internal and external circulating pipes increases the liquid circulation in the reaction device, and is beneficial to the reaction and the uniformity of the reaction temperature.
The reaction zone 100 further comprises a feed inlet 120 and a cover 130, wherein the cover 130 covers the feed inlet 120. For being convenient for throw in reactants such as iron sheet that volume is big and weight is heavy, guarantee oxidation reaction unit's sealing performance simultaneously, lid and batch charging mouth set up sealing mechanism respectively, if: but are not limited to, gaskets, O-rings, and return structures.
In this embodiment, a U-shaped sealing groove 140 is formed on the wall of the opening of the feeding port, and includes a first groove sidewall 141 and a second groove sidewall 142, the distance between the first groove sidewall 141 and the opening 121 is greater than the distance between the second groove sidewall 142 and the opening, and liquid (not shown) is contained in the sealing groove 140.
The sealing member provided by the cover 130 is a plug-in member 131 with a closed periphery, and is inserted into the sealing groove 140, and forms a first chamber 143 and a second chamber 144 with the first groove sidewall 141 and the second groove sidewall 142 respectively. The volume of the first chamber is larger than or equal to that of the second chamber, so that a better liquid sealing effect can be achieved.
Claims (13)
1. A reaction apparatus for producing iron oxide comprising a cascade oxidation reaction assembly; the cascade oxidation reaction assembly comprises:
a first member on which a plurality of first through holes are provided;
the second component is arranged above the first component and provided with a plurality of second through holes;
the aperture ratio of the second component to the first component is 2.5:1-25:1;
the reaction raw materials are placed on the second component, the reaction raw materials cannot completely pass through the through hole of the second component, then gas and liquid are introduced to perform oxidation reaction, along with the progress of the reaction, the reaction raw materials are consumed, the volume is reduced, then the reaction raw materials can completely pass through the through hole of the second component, fall into the first component of the lower layer step by step, and cannot completely pass through the through hole of the first component, then the oxidation reaction is continuously performed, along with the progress of the reaction, the reaction raw materials are consumed, the volume is reduced, and then the reaction raw materials can completely pass through the through hole of the first component and fall to the bottom of the reaction zone.
2. A reaction apparatus for producing iron oxide according to claim 1, wherein,
the first member comprises a plurality of first warp grid bars and a plurality of first weft grid bars, the distance between the first warp grid bars is more than or equal to 5mm and less than 80mm, and the distance between the first weft grid bars is more than or equal to 5mm and less than 80mm;
the second member comprises a plurality of second warp grid bars and a plurality of second weft grid bars, the distance between the second warp grid bars is more than or equal to 80mm and less than or equal to 500mm, and the distance between the second weft grid bars is more than or equal to 80mm and less than or equal to 500mm.
3. A reaction apparatus for producing iron oxide according to claim 1, wherein the height of the first member is 20mm to 200mm.
4. A reaction apparatus for producing iron oxide according to claim 1, wherein the height of the second member is 30mm to 700mm.
5. A reaction apparatus for producing iron oxide comprising a cascade oxidation reaction assembly; the cascade oxidation reaction assembly comprises:
a first member on which a plurality of first through holes are provided;
the second component is arranged above the first component and provided with a plurality of second through holes;
a third member disposed above the second member and having a plurality of third through holes formed therein;
the aperture ratio of the second component to the first component is 2.5:1-25:1, and the aperture ratio of the third component to the second component is 2.5:1-25:1;
the reaction raw material is placed on a third component, cannot completely pass through the third through hole, then gas and liquid are introduced to perform oxidation reaction, along with the progress of the reaction, the reaction raw material is consumed, the volume is reduced, and then can completely pass through the third through hole and fall onto a second component with a second through hole, and cannot completely pass through the second through hole, then the oxidation reaction is continuously performed, along with the progress of the reaction, the reaction raw material is consumed, the volume is reduced, and then can completely pass through the second through hole and fall onto a first component with a first through hole, and cannot completely pass through the first through hole, and the oxidation reaction is continuously performed, along with the progress of the reaction, the reaction raw material is consumed, the volume is reduced, and then can completely pass through the first through hole and fall onto the bottom of a reaction zone.
6. A reaction apparatus for producing iron oxide according to claim 5,
the first member comprises a plurality of first warp grid bars and a plurality of first weft grid bars, the distance between the first warp grid bars is more than or equal to 5mm and less than 20mm, and the distance between the first weft grid bars is more than or equal to 5mm and less than 20mm;
the second member comprises a plurality of second warp grid bars and a plurality of second weft grid bars, the spacing of each second warp grid bar is more than or equal to 20mm and less than 80mm, and the spacing of each second weft grid bar is more than or equal to 20mm and less than 80mm;
the third member comprises a plurality of third warp grid bars and a plurality of third weft grid bars, the space between the third warp grid bars is more than or equal to 80mm and less than or equal to 500mm, and the space between the third weft grid bars is more than or equal to 80mm and less than or equal to 500mm.
7. A reaction apparatus for producing iron oxide according to claim 5, wherein the height of the first member is 20mm to 100mm.
8. A reaction apparatus for producing iron oxide according to claim 5, wherein the height of the second member is 30mm to 200mm.
9. A reaction apparatus for producing iron oxide according to claim 5, wherein the height of the third member is 40mm to 700mm.
10. The reaction apparatus for producing iron oxide of claim 5, further comprising a fourth member disposed below said first member.
11. A reaction apparatus for producing iron oxides as defined in claim 10 wherein said fourth member is in the form of a bucket.
12. A reaction apparatus for producing iron oxide according to claim 1 or 5, further comprising:
the reaction zone comprises a first containing cavity, a feed port and a cover body, wherein the cover body covers the feed port;
the gas-liquid distribution area is arranged below the reaction area and comprises a second containing cavity, a gas collection chamber, more than 1 gas distribution pipes and air vents; the second containing cavity is communicated with the first containing cavity, the gas collecting chamber is arranged in the second containing cavity, one end of the gas distribution pipe is arranged at the periphery of the gas collecting chamber, and the air vent is arranged below the gas collecting chamber;
the cascade oxidation reaction component is arranged in the first accommodating cavity.
13. A reaction apparatus for producing iron oxide as defined in claim 12, further comprising: comprises a sealing mechanism which is respectively arranged at the cover body and the feeding port.
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| GB1535889A (en) * | 1976-04-24 | 1978-12-13 | Bayer Ag | Continuous production of iron oxide black pigments |
| CN1765486A (en) * | 2004-10-28 | 2006-05-03 | 中国石油化工股份有限公司 | Continuous high temperature gas solid reactor |
| CN103406077A (en) * | 2013-08-08 | 2013-11-27 | 中国天辰工程有限公司 | Rotational flow plate glycerinum chlorination bubbling reaction tower and device for producing epichlorohydrin |
| CN104689763A (en) * | 2015-02-11 | 2015-06-10 | 上海一品颜料有限公司 | Oxidizing reaction device and use of oxidizing reaction device |
| CN206325536U (en) * | 2016-06-25 | 2017-07-14 | 上海一品颜料有限公司 | Cascade oxidation reaction component and its device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7198655B2 (en) * | 2004-05-03 | 2007-04-03 | Evergreen Energy Inc. | Method and apparatus for thermally upgrading carbonaceous materials |
| GB0619835D0 (en) * | 2006-10-06 | 2006-11-15 | Univ Bath | Apparatus and process for use in three-phase catalytic reactions |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1535889A (en) * | 1976-04-24 | 1978-12-13 | Bayer Ag | Continuous production of iron oxide black pigments |
| CN1765486A (en) * | 2004-10-28 | 2006-05-03 | 中国石油化工股份有限公司 | Continuous high temperature gas solid reactor |
| CN103406077A (en) * | 2013-08-08 | 2013-11-27 | 中国天辰工程有限公司 | Rotational flow plate glycerinum chlorination bubbling reaction tower and device for producing epichlorohydrin |
| CN104689763A (en) * | 2015-02-11 | 2015-06-10 | 上海一品颜料有限公司 | Oxidizing reaction device and use of oxidizing reaction device |
| CN206325536U (en) * | 2016-06-25 | 2017-07-14 | 上海一品颜料有限公司 | Cascade oxidation reaction component and its device |
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