Reactor

FIELD: chemical industry, catalytic processes.

SUBSTANCE: the invention presents a reactor for catalytic processes and is dealt with the field of chemical industry and may be used for catalytic processes. The reactor contains: a body; units of input and output for a reaction mixture and products of reactions; units of loading and unloading of a catalyst; a catalyst layer with the groups of the parallel hollow gas-permeable chambers located on it in height in one or several horizontal planes and each of the chambers has a perforated gas-distributing pipe with impenetrable butt connected to the group collector and used for input of additional amount of the reaction mixture. Each of perforated gas-permeable chambers is supplied with the second gas-distributing pipe with impenetrable butt. At that the impenetrable butts of the pipes are located on the opposite sides. The given engineering solution provides uniformity and entirety of agitation of the reaction mixtures.

EFFECT: the invention provides uniformity and entirety of agitation of the reaction mixtures.

5 cl, 4 dwg

 

The invention relates to designs of mine catalytic reactors used in the chemical and related industries.

Known reactor for carrying out exothermic catalytic reactions containing a catalyst bed located at its height in two horizontal planes mixing bowls, a set of hollow radially spaced gas-permeable tapes, each of which has a perforated distribution pipe with expressionless face, attached to a group header for the input of additional quantities of the reaction mixture, and built process equipment (ed. St. Czechoslovakia No. 150463, D 01 J 9/04, 3. 23.04.69 g, op. 15.09.73 year).

The disadvantages of the known reactors are large temperature spread in the transverse sections of the catalyst layer due to uneven mixing of the primary flow of hot and more cold flow of the reaction mixture, which is caused by uneven after the cold reaction mixture along the length of gas distribution pipes, and the large volume occupied by the hollow gas-permeable tapes and integrated equipment.

The closest in technical essence is a catalytic Converter containing a catalyst bed located at its height in one or several the x horizontal planes parallel groups of hollow gas-permeable chambers, each of which has a perforated distribution pipe with expressionless face, attached outside of the Converter to a group header for the input of additional quantities of the reaction mixture (Patent England No. 1105614, 01 J 9/04, 3. 22.04.64 g, op. 06.03.68,, prototype)

The disadvantages of this Converter are large temperature spread in the transverse sections of the catalyst layer due to uneven mixing of the primary flow of hot and more cold flow of the reaction mixture, which is caused by uneven after the cold reaction mixture along the length of gas distribution pipes, and the large volume occupied by the gas-permeable hollow chambers.

In addition, the location of the group manifold outside of the Converter associated with a large number of input fittings that ethnologica and reduces the strength characteristics of the latter.

The basis of the invention is the task of creating such a reactor, in which a new group and the new location of the gas distribution pipes increases the uniformity and completeness of mixing the primary flow of hot and more cold flow of the reaction mixture, which provides a lower temperature spread in the transverse sections of the catalyst layer in comparison with the prototype.

The problem is solved in that in the reactor, containing the eat case, the nodes of the input and output of the reaction mixture and the reaction products, loading and unloading of the catalyst, the catalyst layer located at its height in one or more horizontal planes parallel groups of hollow gas-permeable chambers, each of which has a perforated distribution pipe with expressionless face, attached to a group header for the input of additional quantities of the reaction mixture, according to the invention, each of the hollow gas-permeable cameras equipped with a second perforated distribution pipe with expressionless face, and tight ends of the pipes are on opposite sides.

Gas distribution pipes in each gas-permeable chamber located one above the other.

The holes on the upper and lower gas distribution pipes are located respectively on the lower and upper halves at an angle of 45°.

On a nearby gas pipe holes are made with a horizontal offset relative to each other.

In addition, each group manifold is made in the form of a ring or rings and half rings, or two half-rings that are located horizontally along the periphery of the cross-section of the reactor.

A distinctive feature of the present invention in comparison with the prototype is pairwise groups the bottom of perforated distribution pipes and the location of their impenetrable ends from opposite sides, that automatically leads to uniform distribution of additional cold flow of the reaction mixture along the length of the gas-permeable chambers, since the unevenness of the expiration of a mixture of one pipe overlaps the opposite inequality it expires from the other, and the minimum distance between parallel gas-permeable cameras, which is determined from the condition of free resume aggregate catalyst grains of a certain size, increase the uniformity and completeness of mixing additional cold flow and the main flow of the hot reaction mixture, which minimizes the temperature spread in the transverse sections of the catalyst layer.

The location of the gas distribution tubes one above the other with their pairwise grouping provides minimal clutter cross-section of the catalyst layer, that is, creates a minimum hydraulic resistance of the main stream of the reaction mixture when other conditions are equal.

The location of the holes on the upper and lower gas distribution pipes respectively at their upper and lower halves at an angle of 45° causes the presence of flowing streams equal multidirectional horizontal and vertical components of velocity, which cover the process of mixing all ecolotree about transto.

The implementation of the holes on the adjacent gas distribution pipes with horizontal offset relative to each other residetial flowing stream that contributes to their more uniform and complete mixing with the main stream of the reaction mixture.

Each group header should be implemented in the form of a ring or rings and half rings, or two half-rings that are located horizontally along the periphery of the cross-section of the reactor, allowing you to simply resolve the issue of “power” pipe tube pairs from opposite sides.

Figure 1 schematically shows a reactor, a longitudinal section; figure 2 is a section a - a in figure 1; figure 3 - section b-B in figure 1; figure 4 is a section b - b In figures 2 and 3.

The reactor consists of a housing 1, units of input 2 and output 3 of the reaction mixture, download sites 4 and unloading 5 catalyst, catalyst layer 6 located at its height in one or more horizontal planes parallel groups of hollow gas-permeable chambers 7, each of which contains two perforated gas-distributing pipes 8 and 9 in the opposite location impermeable ends 10 and 11, and the pipe 8 is located above the pipe 9 and the holes 12 and 13 are made respectively on the lower and upper halves at an angle of 45° offset horizontally between them, and holes in the other of the adjacent tubes, connected to the group manifold 14 with the input node 15 additional quantities of the reaction mixture.

The reactor operates as follows.

The main stream of the reaction mixture fed into the reactor via the node 2 input on the catalyst layer 6, which is, for example, exothermic reaction. To control the process temperature in one or more horizontal planes at its height through node 15 introduce an additional quantity of the reaction mixture, which through group manifold 14 is heard from the opposite sides by a perforated distribution pipes 8 and 9 and out through the openings 12 and 13 in the gas-permeable chamber 7, where the uneven expiration along one pipe is automatically compensated by the opposite inequality expiration along the other and, thus, uniformly distributed along the length of the gas-permeable chambers additional cold flow of the reaction mixture is left and right pervades Mezcalero catalyst space minimum possible width, and hence the downward main stream of hot reaction mixture.

The result of such interaction is the most uniform mixing of hot and cold streams by setting the temperature close to balance over the entire cross-section of the catalyst layer.

Described is a process for the distribution and mixing, repeating, if necessary, the height of the catalyst bed several times, ensure the implementation of the target response in the optimal temperature range.

The effectiveness of the new technical solutions confirmed during the experimental evaluation of the distribution and mixing of different streams on a rectangular stand with the parties h mm, through which the tail fan prosushivayut air from the environment in the amount of 480 m3/hour and a temperature of 20°With and positioned horizontally and centered on the longitudinal gas-permeable chamber length of 800 mm and a maximum width of 300 mm through one (the prototype) and two perforated gas-distributing pipe in the opposite location impermeable ends (invention) pump air in an amount of 60 m3/hour and a temperature of 40°C. In the first case, the measurement temperature under gas-permeable camera fixed longitudinal temperature gradient 2.5°s/m, and the second chaotic dispersion of the temperature did not exceed 0.5°C.

Thus, the proposed reactor minimizes the temperature spread in transverse cross section and, consequently, increases the yield of the target product when other conditions are equal.

The use of the reactor is recommended, first of all, when creating a new and reconstruction of existing facilities m is canola, in particular, such as the M-100 M-300 and M-750.

1. The reactor, containing case, the nodes of the input and output of the reaction mixture and the reaction products, loading and unloading of the catalyst, the catalyst layer located at its height in one or more horizontal planes parallel groups of hollow gas-permeable chambers, each of which has a perforated distribution pipe with expressionless face, attached to a group header for the input of additional quantities of the reaction mixture, characterized in that each of the hollow gas-permeable cameras equipped with a second perforated distribution pipe with expressionless face, and tight ends of the pipes are on opposite sides.

2. The reactor according to claim 1, characterized in that the gas distribution pipes in each gas-permeable chamber located one above the other.

3. The reactor according to claim 1 or 2, characterized in that the holes on the upper and lower gas distribution pipes are located respectively on the lower and upper halves at an angle of 45°.

4. The reactor according to any one of claims 1 to 3, characterized in that adjacent the gas tube hole is made with a horizontal offset relative to each other.

5. The reactor according to any one of claims 1 to 4, characterized in that each group manifold is made in the ideal of a ring or rings and half rings, or two half-rings that are located horizontally along the periphery of the cross-section of the reactor.



 

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Reactor // 2246345

FIELD: chemical industry, catalytic processes.

SUBSTANCE: the invention presents a reactor for catalytic processes and is dealt with the field of chemical industry and may be used for catalytic processes. The reactor contains: a body; units of input and output for a reaction mixture and products of reactions; units of loading and unloading of a catalyst; a catalyst layer with the groups of the parallel hollow gas-permeable chambers located on it in height in one or several horizontal planes and each of the chambers has a perforated gas-distributing pipe with impenetrable butt connected to the group collector and used for input of additional amount of the reaction mixture. Each of perforated gas-permeable chambers is supplied with the second gas-distributing pipe with impenetrable butt. At that the impenetrable butts of the pipes are located on the opposite sides. The given engineering solution provides uniformity and entirety of agitation of the reaction mixtures.

EFFECT: the invention provides uniformity and entirety of agitation of the reaction mixtures.

5 cl, 4 dwg

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