RU53664U1 - DEVICE FOR PRODUCING ELEMENTARY SULFUR - Google Patents

Abstract

Usage: processing of hydrogen sulfide-containing gases, utilization of hydrogen sulfide. The essence of the utility model: heated air is fed into the lower layers of the catalyst 4, poured on the gas distribution grid 3 of the reactor 1, and hydrogen sulfide-containing gas is fed under the grate. The reaction zone is cooled by the refrigerant supplied to the coil 7. The sulfur-dispersed reaction products leaving reactor 1 on the way to the bubble zone are cooled by the coil 21, into which the coolant is fed through the actuator 22, which interacts through the regulator 23 with the viscosity sensor 24. Sparging through the bubbler 17 through the liquid sulfur in the sump 2, finely dispersed sulfur settles, and the gas phase of the reaction products enters the zone "above the bubble layer", passes through the droplet eliminator 7 and discharges through the pipe 10. Through pipe 9 liquid sulfur from the upper level of the bubble layer is discharged into the pipe 8. Due to the exclusion of direct contact of the gas with cooling water, the formation of carbon dioxide is reduced. The glass 25 does not allow the leakage of reaction products into the overflow pipe 9. Reliable operation of the regulator 18 of the upper level of the bubble layer provides the use of a vertical partition 19.

Description

The utility model relates to the field of processing hydrogen sulfide-containing gases to produce elemental sulfur and utilization of hydrogen sulfide and can be used in the oil industry.

A device for producing elemental sulfur is known, including heaters, a reactor with cooling coils and a gas distribution grid on which a catalyst layer is poured, a condenser with a tube bundle washed with a coolant, a sulfur collector with pipes for supplying and discharging liquid sulfur, a droplet eliminator and filters (see F.R. Ismagilov, “A Method for Utilization of Hydrogen Sulfide in a Fluid Bed of a Catalyst,” Gas Industry Journal, 1993, No. 1, pp. 23-24).

The disadvantage of this device is its low reliability due to clogging of the condenser pipes with condensed liquid sulfur, which, upon cooling, reaching a temperature of 188 ° C, loses fluidity due to the anomalous nature of its rheological properties, as a result, its viscosity reaches 93.1 Pass, which leads to an increase hydraulic resistance of the tube bundle of the condenser to values leading to emergency stops of the process.

A device containing gas heaters, a reactor with cooling coils and a gas distribution grid and a catalyst layer poured on it, a sulfur collector with nozzles for removing liquid sulfur and the reaction products purified from it and a cooling water inlet unit which is injected towards the mixture consisting of gas , steam and liquid sulfur dispersed in them to maintain its temperature. The upper part of the reactor with an open end is coaxially placed in the sump; it does not reach the upper bottom of the sump and forms a bubbling compartment with its shell and bottoms. A pipe mounted coaxially in the bubble compartment is attached to the upper bottom of the sump. At the lower end of the pipe, a lattice bubbler is fixed. An overflow pipe connected to the nozzle is installed in the sump

liquid sulfur removal, to which a viscosity sensor is connected, the output of which is connected through a viscosity regulator to the input of the actuator of the cooling water input unit. In the bubbling compartment, a regulator of the upper level of the bubbling layer and a droplet eliminator are installed (see RF patent for PM No. 17040 IPC С 01 В 17/04, publ. March 10, 2001).

However, the effectiveness of the known device is reflected, firstly, the formation of carbon dioxide during ballasting of the gas with water injected towards the mixture leaving the reactor, which includes carbon dioxide, and, secondly, the inevitable breakdowns of the reaction products through the overflow pipe into the liquid sulfur outlet pipe , which requires the installation of a special sluice trap outside the sump and leads to additional costs associated with its heating in order to avoid solidification of sulfur.

The proposed utility model solves the problem of increasing the efficiency of the device for producing elemental sulfur by reducing the ballasting of the steam and gas leaving the reactor zone and eliminating the leakage of reaction products into the liquid sulfur outlet pipe.

To achieve the above technical result, a device for producing elemental sulfur is proposed, which, like the one closest to it, contains gas heaters, a reactor with cooling coils and a gas distribution grid with a catalyst layer poured on it, a sulfur collector in which the upper part of the reactor is coaxially located open end, not reaching the upper bottom of the sump and forming with its shell and bottoms a bubble compartment in which a pipe is mounted coaxially attached to the upper the bottom of the sump collector, on the lower end of which there is a lattice bubbler, a cooling water inlet unit, a liquid sulfur outlet, connected to an overflow pipe and to a viscosity sensor, the outlet of which is connected through a viscosity regulator to the input of the actuator of the cooling water inlet, the pipe removal of sulfur-free reaction products, droplet eliminator, regulator of the upper level of the bubble layer.

In contrast to the known device, the cooling water inlet assembly is made in the form of a coil placed in the annular space between the reactor and the coaxial pipe, and the upper part of the overflow pipe is placed with a gap in the inverted glass, the bottom of which is located at the level “above the bubble layer”, the lower edge is lower than it and does not reach the bottom of the sump.

In addition, in the proposed device, the regulator of the upper level of the bubble layer is separated from the bubble zone by means of a vertical partition, the upper edge of which is located above the level of the bubble layer, and the lower one is lower.

The design of the cooling water input unit in the form of a coil excludes direct contact of the cooling water with the combined-cycle gas. This reduces the ballasting of the latter and thus reduces the formation of carbon dioxide; the presence of an inverted glass above the overflow pipe eliminates the leakage of reaction products into it.

The use of a vertical partition around the regulator of the upper level of the bubbling layer ensures reliable operation of the regulator in a zone calm from bubbling.

The drawing shows a schematic diagram of a device for producing elemental sulfur.

A device for producing elemental sulfur includes a reactor 1 and a sulfur collector 2. In the lower part of the reactor 1, a gas distribution grid 3 is mounted on which a granular catalyst 4 is poured. Under the grid 3, a hydrogen sulfide-containing gas heater 5 and an air heater 6 are connected to the reactor. A coil 7 is mounted inside the reactor to control the temperature in the reaction zone by supplying a refrigerant (e.g., water).

Sulfur collector 2 is equipped with a nozzle 8 for removal of liquid sulfur, connected to an overflow pipe 9, and a nozzle 10 for removal of sulfur-free reaction products, mounted respectively on the lower and upper bottoms 11, 12.

The upper part of the reactor 1 with the open end 13 is placed in the axial part of the sulfur collector 2, does not reach its upper bottom 12 and forms an annular bubble section 15 with the shell 14 and the bottoms of the sulfur collector.

A pipe 16 is coaxially placed in the bubble compartment 15, the upper end of which is fixed on the upper bottom 12 of the sump 2, and the lower does not reach the lower bottom 11. An annular lattice bubbler 17 is attached to the lower end of the pipe 16. The total gap formed between the reactor 1, the upper the bottom of the sump 2 and the pipe 16, forms a space for the passage of reaction products from the reactor into the bubble chamber 15 under the trellised bubbler 17.

A regulator 18 of the upper level of the bubble layer is installed in the bubble compartment 15, which is separated from the bubble zone by means of a vertical partition 19, the upper edge of which is located above the bubble layer and the lower edge is lower, while both of them do not reach the upper and lower bottoms of the sump. In this case, the regulator 18 is connected and interacts with the actuator 20 on the pipe 8 output liquid sulfur.

Above the liquid sulfur level in the annular space between the shell 14 of the sump 2, the pipe 16 and the upper bottom 12 there is a cooling water inlet unit made in the form of a coil 21, the actuator 22 of which interacts through a regulator 23 with a viscosity sensor 24 mounted on the pipe 8 and connected with actuator 22.

The upper part of the overflow pipe 9 is placed with a gap in the inverted cup 25, the bottom 26 of which is located at the level “above the bubbling layer”, the lower edge is below it and does not reach the lower bottom of the sump. In the annular space between the shell 14 and the pipe 16, a droplet eliminator 27 is installed.

The device operates as follows.

When starting the installation, the initial hydrogen sulfide-containing gas through the heater 5 is fed into the reactor 1 under the gas distribution grid 3. They are mixed in the presence of a preheated catalyst 4.

After the reaction is initiated, the heaters are turned off, and the thermal regime is maintained in the reaction zone by controlled supply of refrigerant to the coil 7 to remove heat from the exothermic reaction of hydrogen sulfide oxidation by atmospheric oxygen. When passing through the catalyst bed 4, the reaction products are added to the gas mixture: water vapor and finely dispersed elemental sulfur, which rise to the open upper end 13 of reactor 1, where they are cooled by heat removal from the coolant supplied to the coil 21.

The cooled vapor-gas mixture passes down under the lattice bubbler 17 and sparges through the pre-formed layer of liquid sulfur located in the bubble compartment 15 of the sulfur collector 2. Gas and steam pass in the form of bubbles through the holes in the bubbler 17, form a bubble layer, while finely dispersed sulfur deposits in the liquid sulfur, and the reaction products purified from finely dispersed sulfur through a droplet eliminator 27, in which large drops of liquid sulfur, which are formed at the outlet of the bubble layer, are captured, are discharged from the sulfur collection ika 2 through the pipe 10 with the subsequent disposal of heat carried away with them.

From the area of the sump 2 from the upper level of the bubbling layer, an adjustable removal of liquid sulfur is carried out through the actuator 20 of the regulator 18 of the upper level of the bubbling layer and dumping it through the pipe 8 for further degassing, molding and storage. Maintaining the thermal regime in the reactor is carried out by controlled supply of refrigerant to the coils 7 located in the reaction zone.

The controlled input of the refrigerant supplied to the coil 21 for cooling the vapor gas leaving the reaction zone is carried out through an actuator 22 mounted on the refrigerant supply line, interacting through the regulator 23 with the viscosity sensor 24. If the allowable upper limit for the viscosity of liquid sulfur is exceeded, the flow rate of cooling water.

Claims (2)

1. A device for producing elemental sulfur containing gas heaters, a reactor with cooling coils and a gas distribution grid with a catalyst layer poured on it; a sulfur collector, in which the upper part of the reactor with an open end is coaxially placed, not reaching the upper bottom of the sulfur collector and forming a bubble chamber with its shell and bottoms, in which a pipe is coaxially mounted, attached to the upper bottom of the sulfur collector, on whose lower end a lattice bubbler is fixed; a cooling water inlet node in the bubble chamber, a liquid sulfur outlet pipe connected to an overflow pipe and to a viscosity sensor, the output of which is connected through a viscosity regulator to the input of the cooling water inlet node, an outlet for the removal of sulfur-free reaction products, a droplet eliminator, a top level controller bubbling layer, characterized in that the cooling water inlet unit is made in the form of a coil placed in the annular space between the reactor and the coaxial pipe, over the overflow oh pipe disposed with a gap inverted cup, which is placed on the bottom level "above the bubble layer", the bottom edge - below it and does not reach the lower bottom serosbornika. 2. The device according to claim 1, characterized in that the regulator of the upper level of the bubble layer is separated from the bubble zone by means of a vertical partition, the upper edge of which is located above the level of the bubble layer, and the lower one is lower.