CN212805253U - Steam condensation-discharging preheating device - Google Patents

Abstract

The embodiment of the utility model provides a steam condensation-discharging preheating device, which comprises a steam pipeline, a steam-discharging preheating device and a steam-discharging preheating device, wherein the steam pipeline is provided with an inlet and an outlet, the outlet of the steam pipeline is communicated with the inside of a sulfur-sealed tank and is provided with a first control valve; a branch condensate draining conduit in communication with the steam conduit at a location between the first control valve and an inlet of the steam conduit; and a second control valve is arranged on the condensate discharging branch pipeline. When beginning to let in steam, close first control valve, open the second control valve, steam in the steam conduit can flow in row and congeal the lateral conduit, and the lime set in the steam can be discharged through arranging and congealing the lateral conduit, prevents that the lime set from getting into and leading to the liquid sulphur to solidify after the sulphur seals the jar, guarantees accuracy and high efficiency to sulphur seals the jar inspection.

Description

Steam condensation-discharging preheating device

Technical Field

The utility model relates to a sulphur field of retrieving, concretely relates to preheating device is congealed to steam row.

Background

In the petrochemical industry, sulfur recovery is one of the important process steps. Sulfur recovery is mainly carried out by sulfur lock. When acid gas is introduced into the sulfur-sealed tank, the condensation and blocking are easy to occur. After the occurrence of the congealing blockage, the system pressure difference rises. Therefore, when the system pressure difference changes, the specific condensation and blockage conditions of the sulfur seal tank need to be checked, and the process is sulfur seal breaking operation. At present, when the reason of the rise of the differential pressure of the system is judged, the check of the sulfur sealing tank is a blind area, the judgment and the treatment of the reason of the rise of the differential pressure are greatly restricted, and the treatment difficulty of the dangerous media of the sulfuric acid is increased.

The sulfur seal breaking operation is generally carried out by introducing a medium gas into a sulfur seal tank. In the prior art, nitrogen is used as a medium gas for pressurizing a sulfur seal tank. However, since the liquid sulfur in the sulfur-sealed tank is solidified when the temperature is lower than 119 ℃, and the temperature of the nitrogen is low, the solidified liquid sulfur interferes with the detection of the solidification and blockage of the sulfur-sealed tank after the nitrogen is filled into the sulfur-sealed tank.

In the prior art, steam can be used for replacing nitrogen as medium gas, but a small amount of condensate can be mixed in the steam, and the condensate can easily cause solidification of liquid sulfur after entering a sulfur seal tank along with the steam, so that the process of detecting coagulation and blocking is interfered.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a preheating device is arranged to steam is provided.

The utility model provides an above-mentioned technical problem's technical scheme as follows:

a steam de-condensing and preheating device, comprising: the steam pipeline is provided with an inlet and an outlet, the outlet of the steam pipeline is used for communicating with the inside of the sulfur seal tank, and the steam pipeline is provided with a first control valve; a branch condensate draining conduit in communication with the steam conduit at a location between the first control valve and an inlet of the steam conduit; and a second control valve is arranged on the condensate discharging branch pipeline.

The utility model has the advantages that: when beginning to let in steam, close first control valve, open the second control valve, steam in the steam conduit can flow in row and congeal the lateral conduit, and the lime set in the steam can be discharged through arranging and congealing the lateral conduit, prevents that the lime set from getting into sulphur and seals the jar and lead to the liquid sulphur cooling to produce and congeal stifled, the broken sulphur of interference and seal the operation.

On the basis of the technical scheme, the utility model discloses can also do as follows the improvement:

further, the distance from the communication position of the condensing discharge pipeline and the steam pipeline to the first control valve is less than or equal to 1/3 of the total length of the steam pipeline.

Adopt above-mentioned further scheme's beneficial effect to prevent to arrange the steam after congealing and flow to first control valve in-process, because the pipeline overlength, appear the lime set again and flow into in the sulphur can with steam.

Furthermore, the temperature of the steam entering the sulfur seal tank through the outlet of the steam pipeline is 151 ℃, and the steam pressure is 0.4 MPa.

The beneficial effect of adopting above-mentioned further scheme is that the liquid sulfur solidification in this temperature and the steam of pressure can avoid sulphur to seal the jar.

Further, the inlet of the steam pipeline is used for being communicated with a heat tracing steam pipeline of the sulfur seal tank.

The beneficial effect of adopting above-mentioned further scheme is that the steam that produces when the sulphur seal tank is retrieved liquid sulphur is introduced the sulphur seal tank as the medium gas that breaks sulphur and seals the operation, has realized the reuse of steam.

Furthermore, a thermometer is arranged on the steam pipeline and is positioned between the branch condensate draining pipeline and the inlet of the steam pipeline.

The beneficial effect who adopts above-mentioned further scheme is that the thermometer can real-time detection and show the temperature of the steam before entering row's of steam conduit and congealing the branch pipe.

Further, the measuring range of the thermometer is 0-300 ℃.

Further, a pressure gauge is arranged on the steam pipeline and is positioned between the condensate discharging branch pipeline and an inlet of the steam pipeline.

Adopt above-mentioned further scheme's beneficial effect be the pressure gauge can real-time detection and show the pressure of steam in the steam conduit.

Further, the range of the pressure gauge is 0-160 kPa.

Further, the branch condensate draining pipeline is communicated with the saline sewage pool.

Adopt above-mentioned further scheme's beneficial effect to be that contain salt effluent water sump can collect by arranging the condensate branch pipeline exhaust lime set, prevents that the lime set pollutes the environment.

Further, the steam pipeline is fixed on the support.

Adopt above-mentioned further scheme's beneficial effect to prevent when vibrations or water hammer appear, the steam conduit takes place to remove or topple over.

Drawings

Fig. 1 is a schematic structural view of the steam condensation-discharging preheating device of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a steam pipeline 11, a first control valve 12 and a bracket;

2. a branch drainage and condensation pipe 21 and a second control valve;

3. a thermometer;

4. and a pressure gauge.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

Examples

As shown in fig. 1, an embodiment of the present invention provides a steam condensate discharging and preheating device, which includes a steam pipeline 1, an outlet of the steam pipeline 1 is communicated with an inlet of a gas circuit of a sulfur seal tank through a pipeline, and the outlet is provided with a first control valve 11; arrange and congeal lateral conduit 2, it communicates with steam conduit 1, and the intercommunication department is located between first control valve 11 and steam conduit 1's the entry, arrange and congeal and be equipped with second control valve 21 on the lateral conduit 2, when beginning to let in steam, close first control valve 11, open second control valve 21, steam in steam conduit 1 can flow in arranges and congeal lateral conduit 2, the lime set in the steam can be discharged through arranging and congeal lateral conduit 2, prevent that the lime set from getting into and leading to the liquid sulphur to solidify after the sulphur seals the jar.

In the scheme, the distance from the communication position of the branch condensate draining pipeline 2 and the steam pipeline 1 to the first control valve 11 is less than or equal to 1/3 of the total length of the steam pipeline 1; and the condensate is prevented from flowing into the sulfur seal tank along with the steam again due to the overlong pipeline in the process that the steam after the condensate discharging is finished flows into the first control valve 11.

In the scheme, when steam in the steam pipeline 1 flows into the sulfur seal tank through the first control valve 11, the temperature of the steam is 151 ℃, and the pressure of the steam is 0.4 MPa; this temperature and pressure of the steam can avoid solidification of the liquid sulfur in the sulfur seal.

In the above embodiment, preferably, the inlet of the steam pipeline 1 is connected with the heat tracing steam pipeline of the sulfur seal tank through a pipeline, and the sulfur seal tank is used for introducing heat tracing steam into the steam pipeline 1, so that the recycling of the heat tracing steam is realized.

In the above embodiment, it is preferable that the branched discharging and condensing pipe 2 is communicated with the saline wastewater tank; the salt-containing sewage pool can collect the condensate discharged by the condensate discharging branch pipeline 2, so that the condensate is prevented from polluting the environment.

In the above embodiment, preferably, the length of the steam pipeline 1 is 180mm to 220mm, and the pipe diameter is DN 25.

In the above embodiment, the first control valve 11 and the second control valve 21 are preferably welded gate valves.

In the scheme, a thermometer 3 is arranged on the steam pipeline 1, and the thermometer 3 is positioned between the condensate discharging branch pipeline 2 and the inlet of the steam pipeline 1; the thermometer 3 can detect and display the temperature of the steam in the steam pipeline 1 before entering the condensing branch pipeline 2 in real time; when the temperature displayed by the thermometer 3 reaches the preset temperature, all the condensate in the steam is discharged from the condensate discharging branch pipeline 2; the first control valve 11 is opened and the second control valve 21 is closed at the same time, so that the steam in the steam pipeline 1 flows into the sulfur-sealed tank through the first control valve 11, and the steam flowing into the sulfur-sealed tank does not contain condensate.

In the above embodiment, preferably, the range of the thermometer 3 is 0 to 300 ℃, and the preset temperature is 150 ℃.

In the scheme, a pressure gauge 4 is arranged on the steam pipeline 1, and the pressure gauge 4 is positioned between the condensate discharging branch pipeline 2 and the inlet of the steam pipeline 1; the pressure gauge 4 can real-time detection and show the pressure of steam in the steam pipeline 1, makes the pressure of steam can in time receive control before getting into the sulphur can sealing, avoids steam to get into behind the sulphur can sealing because the production accident appears in the pressure anomaly.

In the above embodiment, the range of the pressure gauge 4 is preferably 0 to 160 kPa.

In this scheme, be equipped with support 12 on steam conduit 1, support 12 can be fixed with steam conduit 1, and when vibrations or water hammer prevented to appear, steam conduit 1 takes place to remove or emptys.

In the above embodiment, the bottom of the bracket 12 is preferably fixed to the grating plate or the base by bolts.

Above combine the figure detailed description the utility model provides a preheating device is congealed to steam row, steam get into before the sulphur seals the jar through row congeal branch pipeline 2 discharge lime set, has avoided getting into behind the sulphur seals jar congeal stifled condition to inspection sulphur and has produced the interference, guarantees accurate and high-efficient to sulphur seals jar inspection. The steam condensation-discharging preheating device is simple in structure, easy to install and disassemble and capable of greatly improving the efficiency of sulfur seal breaking operation.

In the present application, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or unit indicated must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A steam condensate removal preheating device is characterized by comprising:

a steam pipeline (1) with an inlet and an outlet, wherein the outlet of the steam pipeline (1) is communicated with the inside of the sulfur seal tank and is provided with a first control valve (11);

a branch condensate draining conduit (2) which is communicated with the steam conduit (1) and the communication position is positioned between the first control valve (11) and the inlet of the steam conduit (1); and a second control valve (21) is arranged on the condensate discharging branch pipeline (2).

2. The steam condensation preheating device according to claim 1, characterized in that the distance from the connection of the branch condensation line (2) to the steam line (1) to the first control valve (11) is less than or equal to 1/3 of the total length of the steam line (1).

3. The steam condensation-discharging preheating device according to claim 1, characterized in that the steam entering the sulfur-sealed tank through the outlet of the steam pipeline (1) has a temperature of 151 ℃ and a steam pressure of 0.4 MPa.

4. The steam de-condensing and preheating device according to claim 1, wherein the inlet of the steam pipeline (1) is used for communicating with a heat tracing steam pipeline of a sulfur seal tank.

5. The steam condensation preheating device according to claim 1, characterized in that a thermometer (3) is provided on the steam pipe (1), and the thermometer (3) is located between the branch condensation discharging pipe (2) and the inlet of the steam pipe (1).

6. The steam condensation-discharging preheating device according to claim 5, characterized in that the range of the thermometer (3) is 0-300 ℃.

7. The steam condensation preheating device according to claim 1, characterized in that a pressure gauge (4) is arranged on the steam pipeline (1), and the pressure gauge (4) is positioned between the branch condensation discharge pipeline (2) and the inlet of the steam pipeline (1).

8. The steam condensation-discharging preheating device according to claim 7, characterized in that the range of the pressure gauge (4) is 0-160 kPa.

9. The steam condensate draining and preheating device according to claim 1, wherein the condensate draining branch pipe (2) is communicated with a saline wastewater tank.

10. The steam condensing and preheating device according to any one of claims 1 to 9, further comprising a bracket (12), wherein the steam pipe (1) is fixed to the bracket (12).

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