RU28493U1 - FUEL MIXTURE ORDERIZATION SYSTEM - Google Patents

Abstract

A system for odorizing a combustible mixture, including an odorant storage tank, a measuring tank with an odorant level indicator and an odorant supply line, a safety valve, the outlet of which is connected to the torch, process pipelines and stopcocks, characterized in that it contains a tank for storing the combustible mixture with a line the intake and the pump, the suction line of which is connected to the output of the tank for storing the combustible mixture, and the discharge line is connected to the reception line of the combustible mixture and communicated with the odorant supply line.

Description

FUEL MIXTURE ORDERIZATION SYSTEM

The utility model relates to devices for odorizing combustible mixtures and can be used in gas, chemical and other industries where it becomes necessary to impart a specific smell to a combustible mixture, such as liquefied petroleum gas (LPG). Liquefied petroleum gas is used as automobile fuel and needs to be tidied up to quickly detect leaks.

A device for odorizing a gas is known, comprising a diaphragm mounted on a gas pipeline, a differential pressure gauge, a dispenser, a control and main tank with an odorant connected to a gas pipeline, which further comprises a comb connected to the gas pipeline with a solenoid batcher and two solenoid valves, a self-recording thermometer, two microswitches installed in the case of the differential pressure gauge, and a control unit consisting of a pulse generator with variable resistors at the input and amplifying elements, while the output of the generator pulses through the first amplifier element is connected to the solenoid batcher, the sliding contact of the pointer of the thermometer is connected to one variable resistor of the pulse generator installed in the thermometer body, the sliding contact of the pointer of the differential meter is connected to variable resistors of the pulse generator installed in the case of the differential pressure gauge, the first microswitch is connected through the second amplifying element with the first solenoid valve, and the second microswitch through the third amplifying element with the second solenoid th valve (AS USSR No. 1277983, 4 IPC B01 D 3/02, publ. 12/23/86 in bull. No. 47).

The known device cannot be used for odorization of liquefied hydrocarbon gases due to the presence of feedback between the pipeline and containers with odorant.

Closest to the claimed combination of essential features and the achieved result is a gas odorization system containing an odorant storage tank with a refueling device, a working tank, a level gauge containing a measuring tank with a level indicator, primary and backup odorizers, process pipelines and shut-off valves, fueling device made in the form of a half-connector with a locking element with the possibility of attaching to it a reciprocal half-connector with a locking element located on the sleeve of the locking of the operator, the odorant storage tank contains a safety valve with an opening pressure not exceeding 0.07 MPa, the output of which is connected

7MPKS10L / 28

with candles through a deodorizer, self-locking valves are located between the measuring tank and the level gauge, and an odorant filter is installed in front of the odorizers. (Certificate No. 14264, 7MPK F17 D 1/02, published on July 10, 2000, in Bulletin No. 19)

The known system also cannot be used for odorization of liquefied petroleum gases due to changing flows and the presence of feedback between the pipeline and the odorant containers.

Known devices allow odorizing gaseous combustible mixtures only during their transportation with a certain flow rate through the gas pipeline. This is due to the fact that in these devices, containers containing an odorant are connected to the gas pipeline. When transporting LPG through a gas pipeline, it is possible to transfer them into containers with an odorant, which will lead to dilution of the odorant and adversely affect the odorization indicators of LPG in general.

Therefore, odorization of liquefied hydrocarbon gases stored in a separate container, by known devices cannot be performed.

The objective of the claimed utility model is to enable odorization of liquefied hydrocarbon gases stored in a separate tank with a certain volume.

The specified task in the inventive system of odorization of a combustible mixture, including an odorant storage tank, a measuring tank with an odorant level indicator and an odorant supply line, a safety valve, the outlet of which is connected to the torch, process pipelines and shut-off valves, is solved by the fact that it contains a storage tank the mixture with the intake line and a pump, the suction line of which is connected to the output of the tank for storing the combustible mixture, and the discharge line is connected to the reception line of the combustible mixture and communicated with the supply line odorant.

Thanks to such a constructive implementation of the device, a new technical result is achieved, consisting in the possibility of odorization of LPG by supplying an odorant to the intake line directly in the process of filling the tank for storing the combustible mixture or supplying the odorant to the discharge line during its circulation.

The drawing shows a process diagram of a system for odorizing a combustible mixture.

The odorization system of the combustible mixture includes a tank 1 for storing a combustible mixture with a receiving line 2 and a pump 3, the suction line 4 of which is connected to the output of a tank 1 for storing a combustible mixture, and the discharge line 5 is connected to a receiving line 2 of a combustible mixture and communicated via a supply line 6 odorant with odorization unit. The odorization unit consists of a measuring tank 7 with an indicator of the level 8 of the odorant and a pressure gauge 9 and a storage tank 10 of the odorant connected to a measuring tank of 7 s

using the process pipeline 11. The storage tank 10 of the odorant is equipped with an extrusion line 12 and is connected to the fuel gas pipeline 13. Extrusion line 12 is equipped with a pressure gauge 14 and a safety valve 15, the outlet of which is connected to the torch 16. To prevent emergency situations, discharge to discharge torch 5c and metering tank 7 is provided for torch 16c. Technological pipelines are equipped with shut-off valves 17-34.

As a combustible mixture, liquefied petroleum gas is used, namely automobile propane-butane (or automobile propane). A mixture of natural mercaptans is used as an odorant.

The odorization system of a combustible mixture works as follows.

The stopcocks 17, 18 are torn off and fuel gas from the pipeline 13 is extruded through the extrusion line 12 to the storage container 10 of the odorant, where an excess pressure is created in the range 0.07-0.2 MPa, sufficient to transport the odorant from the storage tank 10 to the metering tank capacity 7. Pressure is controlled by a manometer 14. Then the shut-off valve 18 is closed, the cranes 19, 20, 21 are opened and the odorant from the storage tank 10 enters the metering tank 7. The degree of filling with the odorant of the metering tank 7 is controlled by a level indicator 8. After filling the metering tank with an odorant, Cranes 19, 20, 21 close and open the valve 22 to the required level. After that, a pressure of 1 MPa is created in the measuring vessel 7, which should be 0.1-0.2 MPa higher than the pressure in the park (not shown in the diagram). The pressure is controlled by a pressure gauge 9. Then, the valve 23 is opened and the odorant from the measuring tank 7 along the supply line 6, with the valve 24 closed, enters the discharge line 5. At this time, the storage tank 1 is filled through the intake line 2 to store the combustible mixture.

After emptying the measuring tank 7, the taps 23, 22 and 17 are closed, the taps 21, 25, 26 are opened and the pressure from the involved sections of the pipelines is dumped onto the torch 16.

After filling one tank 1 for storing a combustible mixture, filling the next same tank 1 is made in a similar way.

In order to avoid creating unacceptable excess pressure, tank 1 is filled with a combustible mixture up to 80-83% (maximum acceptable level), and a gas cushion occupies 17-20% of the volume.

The necessary amount of odorant to odorize the combustible mixture stored in the tank is determined by calculation. For example, to odorize LPG in a tank 1 with a volume of 200 m, 8-10 liters of odorant are enough. The volume of the measuring tank 7 is designed for odorization of one tank 1 for storing a combustible mixture.

If it is necessary to odorize an already filled tank 1, odorization is performed as follows.

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The valves 27, 28, 29 and 30 are closed, and the valves 31, 32, 33, 24 and 34 open and circulate the combustible mixture according to the scheme:

from tank 1 - through the suction line 4 - through the pump 3 - along the discharge line 5 - through the intake line 2 - into the tank 1. Circulation in a closed cycle is carried out for 30-60 minutes.

At the same time, from the metering tank 7 along the supply line 6, an odorant is supplied to the discharge line 5 by the previously described method.

Shipment of the combustible mixture to the consumer is carried out with closed taps 34, 24 and open taps 31, 32, 33 and 30 from the tank 1 along the suction line 4 by the pump 3, and then along the discharge line 5 into the pipeline 35.

The proposed odorization system is used at the Orenburg Gas Processing Plant and provides a predetermined degree of odorization of liquefied hydrocarbon gases in accordance with the requirements of GOST 27578-87.

Using the proposed system for odorizing a combustible mixture will make it possible to odorize liquefied petroleum gases or any other liquid mixtures stored in a separate container with a certain volume.

Claims (1)

A system for odorizing a combustible mixture, including an odorant storage tank, a measuring tank with an odorant level indicator and an odorant supply line, a safety valve, the outlet of which is connected to the torch, process pipelines and stopcocks, characterized in that it contains a tank for storing the combustible mixture with a line the intake and the pump, the suction line of which is connected to the output of the tank for storing the combustible mixture, and the discharge line is connected to the reception line of the combustible mixture and communicated with the odorant supply line.