Converter gas

 

(57) Abstract:

The invention relates to the design of the Converter gas and can be used in the production of synthesis products by converting gas mixtures, such as hydrogen cyanide. The technical result is to increase the yield of the target product and the performance of the device. This technical result is achieved by the fact that in the Converter gas, comprising a housing, inside of which is installed catalyst grid, gas heat exchange tubes, caps and nozzles for the supply and removal of gas and water, the cover is provided with a cone-shaped perforated distribution feeder contact of gas with variable permeability, and gas heat exchanger tube is made in the form of a bundle of tubes secured in the tube sheets under catalyst mesh, not less than four tubes evenly distributed on the input tube grid, are U-shaped, output with plugs made them in the side holes, located on the level of the input tube to exit the cooled gas along its surface. 2 Il.

The invention relates to the design of the Converter gmer hydrogen cyanide.

Known Converter, comprising a housing with a heat exchange jacket, within which the catalyst mesh, cap, mesh and vents for inlet and outlet gas (Bobkov, S. S. and other Hydrocyanic acid. M. "Chemistry", 1970, S. 117, Fig. 16).

The disadvantage of this device is the lack of quenching gas, which reduces the yield of the target product, and low reliability due to the uneven cooling of the shirt.

Known Converter gas, in which the inside of the chassis catalyst mesh installed water-cooled pipes connected to the heat exchange jacket.with. N 927291, M. class. B 01 J 1/00, 1982).

The disadvantage of this invention is insufficient quenching gases, because the installed water-cooled pipes in some degree increase the quenching gases by increasing the heat exchange surface, but lead to irregular catalyst gauze, which reduces the yield of the target product.

The closest technical level and the achieved result is a Converter gas containing lower chamber and connected to it through a gas pipe upper chamber with conical bottom, hosts the catalyst grid and axis under the net P19/00, 1988).

In this construction is not provided quenching gas across the cross-section of the apparatus, which reduces its performance.

Object of the present invention is to provide a new design of the Converter gas that allows you to organize uniform across the cross section of the cooling apparatus is convertible gas, providing a complete quenching gas.

New design of Converter gas also creates a linear velocity profile of the contact strip at the approach to the reaction zone, which provides a uniform conversion of gas across the cross-section of the device.

The technical result is to increase the yield of the target product and the performance of the device.

This technical result is achieved by the fact that in the Converter gas, comprising a housing, inside of which is installed catalyst grid, gas heat exchange tubes, caps and nozzles for the supply and removal of gas and water, and the cover is provided with a cone-shaped perforated distribution device having a variable permeability, and gas heat exchanger tube is made in the form of a bundle of tubes secured in the tube sheets under catalyst mesh, not less than four TRU is luski performed them side holes, located on the level of the input tube to exit the cooled gas along its surface.

Variable permeability distribution feeder contact strip aligns the profile of the gas velocity and makes the profile of the gas velocity at the approach to catalyst grid is almost linear, which provides the contact passage of gas through the catalyst mesh with the same speed and provides a uniform residence time of the reaction gas in the reaction zone, i.e., achieves a uniform conversion of gas across the cross-section of the device.

Exit cooled to 300oC gas through holes in the cap tubes U-shaped along the surface of the inlet tube prevents it from overheating, as the cooled gas discharged from the lateral holes, pressed heated to 1000oC convertible gas coming from the top of the catalyst gauze, to the surface of the inlet tube and isolates it from the hot gas. To the cooled gas is distributed over the entire surface of the inlet tube is enough for at least four tubes in a U-shape. Gradually mingling with the hot incoming gas, the cooled gas is entrapped in the gas teploe from overheating tubular grille is located in the immediate vicinity of the catalyst gauze and convertible gas from the reaction zone enters the gas heat exchanger tube, water cooled, and its temperature decreases rapidly, thereby quenching gas across the cross-section Converter.

Conducted by the applicant's analysis of the prior art, including the search for patents and scientific and technical information sources and identify sources that contain information about the equivalents of the claimed invention, has allowed to establish that the applicant is not detected similar, characterized by signs, identical to all the essential features of the claimed invention, and the definition from the list of identified unique prototype, as the most similar set of features analogue, has identified a set of essential towards perceived by the applicant to the technical result of the distinctive features in the claimed object set forth in the claims.

Therefore, the claimed invention meets the requirement of "novelty" by applicable law.

To verify compliance of the claimed invention to the requirements of inventive step, the applicant conducted an additional search of the known solutions in order to identify characteristics that match the distinctive features of the prototype of the characteristics of the claimed invention, the result of the prior art, a particular applicant identified the influence provided the essential features of the claimed invention in the formation of the achievement of the technical result.

Therefore, the claimed invention meets the requirement of "inventive level".

In Fig. 1 shows a Converter gas, longitudinal section; Fig. 2 - the device plugs on the end of a U-shaped gas tube.

The Converter includes a housing 1, a cover 2, provided with a distribution device 3 for supplying gas contact and having a variable permeability. Inside the housing 1 under catalyst grid 4 are gas heat exchanger tube 5 made in the form of a bundle of tubes secured in the tube sheets 6 and 7. At least four gas pipes 8 are U-shaped and are located at the same distance from each other on the input tube grid 6. At the exit of the gas tubes 8 are installed plugs 9, which made the side holes 10 located at the level of the input tube 6 to exit the cooled reformed gas along its surface. The housing 1 is equipped with nozzles 11 for the supply and 12 for draining cooling water pipe 13 for supplying a gas contact and socket is ontactnig gas, for example, a mixture of ammonia, methane and oxygen with a temperature of 100oC enters the body 1 of the Converter gas through pipe 13 to the perforated distribution device 3 having a variable permeability, which provides the same speed contact of the gas through the catalyst grid 4, where it is conversion, i.e., the formation of hydrogen cyanide from oxidation of methane and ammonia. In the process of conversion for catalyst a grid 4 gas is heated to a temperature of 1000oC and enters the gas heat exchange tube 5, where it gives off its heat to the cooling water in the annular space coming through the pipes 11 and leaving through pipe 12. Cooled to 300oC convertible gas through the nozzle 14 is removed from the Converter. The part is cooled to 300oC converted gas through the U-shaped tube 8 is returned to the input tube grid 6 and through holes 10 in the plugs 9 spreads evenly over the entire surface of the tube 6, sheltering her from the hot convertible gas, which comes from the catalyst gauze 4 gas in the tubes 5.

Execution of perforated distribution device 3 with the variable PR is amym achieved at the same time the contact of the gas in the reaction zone and ensures uniform conversion of gas across the cross-section of the device.

Part of the gas heat exchanger tubes 8 U-shaped protects against overheating of the input tube grid 6 due to the repayment of part of the cooled gas escaping through the side holes 10 in the plugs 9 and allows you to position the input tube grid 6 in close proximity to the catalyst grid 4, thereby cooling the converted gas immediately after leaving the reaction zone, thereby achieving total quenching gas across the cross-section Converter and prevents the decomposition of the target product and increases its output and performance of the device.

Thus, the above data confirm that the implementation of the use of the claimed invention, the following cumulative conditions:

Converter gas is designed to produce fusion products, such as hydrogen cyanide;

for the claimed invention in the form as it is described in the independent clause following claims, confirmed the possibility of its implementation using the above described in the application or known before the priority date tools and techniques;

the method embodying the claimed invention in its implementation, capable obespechit, inside of which is installed catalyst grid, gas heat exchange tubes, caps and nozzles for the supply and removal of gas and water, characterized in that the cover is provided with a cone-shaped perforated distribution feeder contact of gas with variable permeability, and gas heat exchanger tube is made in the form of a bundle of tubes secured in the tube sheets under catalyst mesh, not less than four tubes evenly spaced on the input tube grid, are U-shaped, output with plugs made them in the side holes, located on the level of the input tube to exit the cooled gas along its surface.

 

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13 cl, 6 dwg

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