SU1161176A1 - Installation for reforming hydrocarbons - Google Patents

Abstract

INSTALLATION FOR HYDROCARBON REFORMING, including a tube furnace and an apparatus for cooling the reaction gases located under it, containing a horizontal body with lids, heat exchange tubes and reaction tubes leaving the furnace, so as to increase the reliability of the installation and increase heat utilization gases, it is equipped with a device connected to the reaction tubes for uniform distribution of gas, located under the bundle of heat exchange tubes and made in the form of perforated oh lattice with fixed longitudinal partitions, between which the reaction tubes are located. kn to

Description

E-acquisitions are related to chemical engineering and can be used in industrial plants for the reforming of hydrocarbons with the production of hydrogen, synthesis gas, metaiol and heat recovery of the reaction gases. Such a countercurrent in the direction of circulation (cisepxy down) and the force due to the difference in specific gravities (from bottom to top) create resistance to circulation, which is maintained by forced circulation of the refrigerant, which is associated with the costs of equipment and electricity. The purpose of the invention is to increase the use of heat of the reaction gas and increase the reliability of the installation. 1 shows the installation, general view, in FIG. 2 shows a device for cooling the reaction products, a longitudinal section; FIG. 3 shows section A-A in FIG. 2, in FIG. 4 shows a section BB in FIG. 2, in FIG. ..5 is a diagram of the contact of hot gases with a cooling tube and refrigerant; FIG. 6 - the same (in case of lower gas supply). . The installation consists of a tube furnace 1 with burners 2 and reaction tubes 3, each of which is connected to the pipeline 4 with a cooling device 5, consisting of a body 6, protected from inside by thermal insulation 7, a gas-permeable jacket 8, a supporting perforated sheet (grid) 9 - with ribs 10, guide angles 11 and separation box 12, bundle of pipes 13 of beam partitions 14, sealing washers 15, separation box 16, guide plate 17 protected outside by thermal insulation 18 of partitions 19, inlet 20 and outlet 21 and 22 branch pipes ov The pipelines 4 are connected to the cooling device 5 through the inlet cap 23, the pipelines 4 are connected to the TpyOi, 24, the raw material is supplied to the P installation through the nozzle 25, 27 - the corridor and the tube bundle of the cooling pipes. The installation works as follows. The raw material enters through the furnace tube 25c and further into the reaction tubes 3. Reaction products with a temperature of 830-850 ° C through the pipelines 4 and the descending tubes 24 enter the cooling device 5. With the help of the guide sheet 17. hot gas flows under the perforated sheet 9, passes through the holes in it, then between the cooling pipes 13, where, cooling, rises up into the cavity 26 and through the fitting 22 leaves the cooling device 5. Dp before the hot gas bypass rotates along the corridor 27 after its removal from the discharge pipe 24, the gap between the pipe 24 and the duct 12 closes the sealing tab 15, and on the beam side of the pipe 13 the corridor 27 is divided by partitions 19. The presence of the corridor 27 between the pipes also allows the tubing to be inserted after the installation of the standpipes 24 . at the case of the cooling device. The cooling agent (water condensate) enters through the nozzle 20 into the lower part of the cooling V-shaped pipes 13, where boiling begins, and then into their upper part, where it ends, which forms from the steam line to the emulsion, leaves the cooling device through the nozzle 21. Supply strongly heat gases with the help of standpipes for cooling pipes (fig. b) excludes the possibility of overheating of water vapor and pipe walls, since the heat of the hot pelvic bursts are spent to boil to form steam, which also ensures the temperature of the st It is primarily determined by the boiling point of water, due to the high values of the heat transfer coefficient.

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Claims (1)

INSTALLATION FOR REFORMING HYDROCARBONS, including a tube furnace and a device for cooling reaction gases located below it, comprising a horizontal housing with caps, heat transfer pipes and reaction pipes leaving the furnace, characterized in that, in order to increase the reliability of the installation and increase the use of heat of reaction gases, it is equipped with a device connected to the reaction tubes for uniform distribution of gas ± s, located under a bundle of heat exchange tubes and made in the form of a perforated brushes with longitudinal partitions fixed to it, between which reaction tubes are located. SU. .. 1161176 <1 J 5 R