CN210950783U - High-purity liquid chlorine tank car device of unloading - Google Patents
High-purity liquid chlorine tank car device of unloading Download PDFInfo
- Publication number
- CN210950783U CN210950783U CN201921426882.2U CN201921426882U CN210950783U CN 210950783 U CN210950783 U CN 210950783U CN 201921426882 U CN201921426882 U CN 201921426882U CN 210950783 U CN210950783 U CN 210950783U
- Authority
- CN
- China
- Prior art keywords
- liquid
- pipeline
- liquid chlorine
- chlorine
- phase
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Loading And Unloading Of Fuel Tanks Or Ships (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model discloses a high-purity liquid chlorine tank wagon unloading device, which comprises a liquid chlorine tank wagon and at least two liquid chlorine storage tanks, wherein a liquid phase port of the liquid chlorine tank wagon is communicated with one end of a liquid phase filling riser, and the other end of the liquid phase filling riser is communicated with one end of a liquid chlorine unloading pipeline and is respectively communicated with inlets of a first liquid chlorine storage tank and a second liquid chlorine storage tank through the other end of the liquid phase unloading pipeline; the gas phase port of the liquid chlorine tank wagon is communicated with one end of a gas phase filling riser, and the other end of the gas phase filling riser is communicated with one end of a chlorine gas pressurizing pipeline and is communicated with the outlet of the liquid chlorine gasifier through the other end of the chlorine gas pressurizing pipeline; the import and the liquid chlorine storage tank discharging pipe one end intercommunication of liquid chlorine vaporizer, the liquid chlorine storage tank discharging pipe other end passes through the liquid chlorine measuring pump respectively with the export intercommunication of first liquid chlorine storage tank and second liquid chlorine storage tank, the beneficial effects of the utility model are that: the utility model discloses a high-purity liquid chlorine technique and equipment of unloading effectively improve the safety of unloading and avoid the liquid nitrogen to be polluted.
Description
Technical Field
The utility model relates to a highly toxic chemicals technical field that unloads, concretely relates to high-purity liquid chlorine tank wagon device of unloading.
Background
High purity chlorine is an important electronic gas, mainly used in the semiconductor industry. The liquid chlorine is a liquefied state of chlorine gas, is a highly toxic chemical, has high harm degree, and is listed as a dangerous chemical which is first subjected to key supervision by the national safety supervision department. Once the liquid chlorine is leaked, the harm to the human health and the environment is great, and the unloading process is a link in which the liquid chlorine is easily leaked and polluted.
At present, the domestic liquid chlorine tank car unloading process mainly comprises the following three processes: 1) the air-compression chlorine-discharging process is simple and safe, but the chlorine is easy to generate hypochlorous acid and hydrochloric acid with water in the air in the unloading process, the corrosion to equipment, pipelines and the like is extremely high, the water content of compressed air needs to be controlled, the air continuously enters a tank car and a storage tank, the purity of liquid chlorine is influenced, high-purity liquid chlorine is polluted, and a large amount of chlorine-containing waste gas is generated; 2) a potential difference chlorine pumping and discharging process is characterized in that a liquid chlorine ground tank is added, liquid chlorine is introduced into the ground tank through the pressure of a tank car, and then the liquid chlorine is pumped into a storage tank by a pump. 3) The gasification chlorine discharging process is characterized in that liquid chlorine in a gasifier is gasified and then pressurized, and the liquid chlorine is pressed into a storage tank from a tank car.
At present, the liquid chlorine unloading also commonly adopts a common liquid chlorine filling riser to unload, the common filling riser has no anti-leakage measures and devices, the unloading process is easy to cause untight connection between the filling riser and a tank car, and the filling riser adapter is not sealed tightly, so that leakage occurs. In addition, after unloading is finished, the unloading crane pipe is separated from the liquid chlorine tank wagon, and after the crane pipe valve and the tank wagon valve are closed, residual liquid chlorine between the two valves can leak, so that the human health and the environment are harmed, and the liquid chlorine is wasted.
Therefore, the leakage of the high-purity liquid chlorine in the unloading process and the pollution of the high-purity liquid chlorine are the biggest problems in the unloading process of the liquid chlorine.
SUMMERY OF THE UTILITY MODEL
In order to solve the leakage and the polluted problem of the high-purity liquid chlorine unloading process, the utility model provides a high-purity liquid chlorine tank wagon unloading device.
The technical scheme of the utility model as follows:
the unloading device of the high-purity liquid chlorine tank car is characterized by comprising a liquid chlorine tank car and at least two liquid chlorine storage tanks, wherein the liquid chlorine storage tanks comprise a first liquid chlorine storage tank and a second liquid chlorine storage tank, the top of the liquid chlorine tank car is provided with a liquid phase port and a gas phase port, the liquid phase port of the liquid chlorine tank car is communicated with one end of a liquid phase filling riser, the other end of the liquid phase filling riser is communicated with one end of a liquid chlorine unloading pipeline, the other end of the liquid chlorine unloading pipeline is respectively communicated with inlets of the first liquid chlorine storage tank and the second liquid chlorine storage tank, and inlets of the first liquid chlorine storage tank and the second liquid chlorine storage tank are respectively provided with a thirteenth pneumatic switch valve and a fourteenth pneumatic switch valve; the gas phase port of the liquid chlorine tank wagon is communicated with one end of a gas phase filling riser, and the other end of the gas phase filling riser is communicated with one end of a chlorine gas pressurizing pipeline and is communicated with the outlet of the liquid chlorine gasifier through the other end of the chlorine gas pressurizing pipeline; the inlet of the liquid chlorine gasifier is communicated with one end of a liquid chlorine storage tank discharge pipe, the other end of the liquid chlorine storage tank discharge pipe is respectively communicated with the outlets of the first liquid chlorine storage tank and the second liquid chlorine storage tank through a liquid chlorine metering pump, and the outlets of the first liquid chlorine storage tank and the second liquid chlorine storage tank are respectively provided with a ninth pneumatic switch valve and a tenth pneumatic switch valve.
The high-purity liquid chlorine tank car device of unloading, its characterized in that: the gas-phase crane pipe and the liquid-phase crane pipe are connected through a crane pipe communicating pipe, and an eleventh pneumatic switch valve and a twelfth pneumatic switch valve are respectively arranged on the gas-phase crane pipe and the liquid-phase crane pipe at the rear of the pipeline connection; a seventh pneumatic switch valve is arranged on the crane pipe communicating pipe; a pipeline between the liquid-phase crane pipe and the seventh pneumatic switch valve on the crane pipe communicating pipe is connected with a chlorine pressurization pipeline through a crane pipe liquid return pipeline, is connected with a chlorine analysis system through a liquid-phase analysis pipeline, is connected with a tail gas system through a liquid-phase crane pipe emptying pipeline, and is provided with a sixteenth pneumatic switch valve on the crane pipe recycling pipeline; the liquid phase analysis pipeline is provided with an eighth pneumatic switch valve; the liquid phase crane pipe emptying pipeline is provided with a second safety valve; and a second pressure gauge is arranged on a crane pipe communicating pipe connected between the liquid phase crane pipe and the seventh pneumatic switch valve, and the second pressure gauge has an alarm function.
The high-purity liquid chlorine tank car device of unloading, its characterized in that: a vacuum system is connected to a pipeline between the gas-phase crane pipe and the seventh pneumatic switch valve on the crane pipe communicating pipe through a vacuum tail gas inlet pipeline, the pipeline is connected to a chlorine recovery system through a pressure relief pipeline, the pipeline is connected to a chlorine analysis system through a gas-phase analysis pipeline, the pipeline is connected to a tail gas system through a gas-phase crane pipe emptying pipeline, the pipeline is connected to a high-purity nitrogen system through a nitrogen pipeline, and the fifth pneumatic switch valve is arranged on the vacuum tail gas inlet pipeline; a fifteenth pneumatic switch valve is arranged on the pressure relief pipeline; the gas phase analysis pipeline is provided with a sixth pneumatic switch valve; the gas phase crane pipe emptying pipeline is provided with a first safety valve; a third pneumatic switch valve is arranged on the nitrogen pipeline; and a first pressure gauge is arranged on a crane pipe communicating pipe connected between the gas-phase crane pipe and the seventh pneumatic switch valve, and the first pressure gauge has a remote transmission alarm function.
The high-purity liquid chlorine tank car device of unloading, its characterized in that: the vacuum system adopts a Venturi vacuum pump with a nitrogen power source, a nitrogen inlet of the Venturi vacuum pump is connected to a nitrogen pipeline, and the nitrogen inlet is provided with a fourth pneumatic switch valve; the outlet of the venturi vacuum pump is connected to a tail gas treatment system through a vacuum emptying pipeline; and the tail gas inlet of the venturi vacuum pump is connected with a vacuum tail gas inlet pipeline.
The high-purity liquid chlorine tank car device of unloading, its characterized in that: the liquid chlorine gasifier is a closed jacket water bath type gasifier, an inner cavity of the gasifier is provided with a liquid level meter port, a liquid chlorine inlet and a chlorine gas outlet, the liquid level meter port is provided with a liquid level meter, the liquid level meter and a liquid chlorine metering pump are controlled in a linkage mode, the liquid chlorine inlet is inserted into the bottom of the inner cavity of the gasifier downwards, the liquid chlorine inlet is connected with a discharge pipe of a liquid chlorine storage tank, the chlorine gas outlet is connected with a chlorine gas pressurization pipeline, the chlorine gas pressurization pipeline is provided with a second thermometer and a third pressure gauge, the second thermometer and the third pressure gauge are provided with a remote alarm function, the chlorine gas pressurization pipeline is connected into a tail gas treatment system through a liquid chlorine gasifier emptying pipeline, and a third safety valve is arranged on the liquid chlorine gasifier emptying pipeline; the gasifier jacket is provided with a PH meter which has a remote alarm function; the gasifier jacket is provided with a first thermometer and electric heating, and the first thermometer and the electric heating are controlled in a linkage mode.
The high-purity liquid chlorine tank car device of unloading, its characterized in that: the one end that liquid phase oil filling riser and liquid chlorine tank wagon liquid phase mouth link to each other sets up the second pneumatic switch valve, the one end that gaseous phase oil filling riser and liquid chlorine tank wagon gas phase mouth link to each other sets up first pneumatic switch valve.
The utility model has the advantages that:
1) high-purity liquid chlorine device of unloading, set up the relief valve in oil filling riser communicating pipe, can prevent that the superpressure from appearing in the process of unloading, ensure system operation safety.
2) The utility model discloses creatively adopts nitrogen gas to carry out twice pressurize leak test to the pipeline of unloading, can ensure the reliability that oil filling riser and tank wagon are connected, has avoided the liquid chlorine leakage accident that common oil filling riser is connected and is not good to lead to. And meanwhile, venturi purging is carried out twice, so that nitrogen impurities are prevented from being introduced after pressure testing.
3) The utility model creatively adds a sampling analysis procedure, and avoids the potential safety hazard caused by disqualification of liquid chlorine in the tank car; the negative pressure maintaining after unloading and purging is increased, and the hidden leakage danger is avoided by confirming that the tank car pipe opening valve is closed.
4) The utility model creatively adopts the pressure relief backflow, on one hand, the emission of chlorine waste gas generated by purging a pipeline can be reduced, the leakage of residual liquid chlorine can be avoided, and the environment is protected; on the other hand, liquid chlorine flows back to the tank wagon, thereby reducing the waste of raw materials.
5) The utility model discloses a liquid chlorine vaporizer can effectively avoid nitrogen trichloride to gather, prevents the explosion, can prevent that liquid chlorine from leaking simultaneously.
6) Adopt the utility model discloses liquid chlorine tank wagon to 25t unloads, unload about 600 times altogether, liquid chlorine leakage incident does not appear, electronic level liquid chlorine purity 99.999% in the tank wagon, the purity of unloading to in the liquid chlorine storage tank is 99.999%, unload at every turn and release pressure and flow back to about 25kg of liquid chlorine of tank wagon, about 15000kg electronic level liquid chlorine has been retrieved altogether, tail gas emission has been reduced on the one hand, on the other hand has reduced the raw materials extravagant.
7) The utility model discloses a high-purity liquid chlorine technique and equipment of unloading effectively improve the safety of unloading and avoid the liquid nitrogen to be polluted.
Drawings
FIG. 1 is a schematic view of the overall connection structure of the present invention;
FIG. 2 is an enlarged schematic view of part A of the present invention;
FIG. 3 is an enlarged schematic view of the structure of part B of the present invention;
FIG. 4 is an enlarged schematic view of the structure of part C of the present invention;
in the figure: v01-liquid chlorine tanker, V02-first liquid chlorine storage tank, V03-second liquid chlorine storage tank, V04-liquid chlorine emergency relatch, L01-liquid chlorine filling pipe, L01A gaseous phase filling pipe, L01B liquid phase filling pipe, P01-liquid chlorine metering pump, E01-liquid chlorine vaporizer, VG 01-Venturi, AV 01-first pneumatic switch valve, AV 02-second pneumatic switch valve, AV 03-third pneumatic switch valve, AV 04-fourth pneumatic switch valve, AV 05-fifth pneumatic switch valve, AV 06-sixth pneumatic switch valve, AV 07-seventh pneumatic switch valve, AV 08-eighth pneumatic switch valve, AV 09-ninth pneumatic switch valve, AV 10-tenth pneumatic switch valve, AV 2-eleventh pneumatic switch valve, AV 56-twelfth pneumatic switch valve, AV 86 13-fourteenth pneumatic switch valve, AV 8269553, AV 15-a fifteenth pneumatic switch valve, AV 16-a sixteenth pneumatic switch valve, L02-a crane connecting pipe, L03-a chlorine gas pressurizing pipeline, L04-a liquid chlorine discharging pipeline, L05-a vacuum tail gas inlet pipeline, L06-a vacuum emptying pipeline, L07-a nitrogen pipeline, L08-a nitrogen pipeline, L09-a pressure relief pipeline, L10-a crane liquid return pipeline, L11-a gas phase analysis pipeline, L12-a liquid phase analysis pipeline, L13-a gas phase crane emptying pipeline, L14-a liquid phase crane emptying pipeline, L15-a liquid chlorine storage tank discharging pipe, L16-a liquid chlorine vaporizer emptying pipeline, LICA 01-a liquid level meter, 01-a first thermometer, TIA 02-a second thermometer, PIA 01-a first pressure gauge, PIA 02-a second pressure gauge, PIA 03-a third pressure gauge, PHIA-a PH 01-a PH gauge, SV 01-first relief valve, SV 02-second relief valve, SV 03-third relief valve, MV 01-first valve, MV 02-second valve.
Detailed Description
The invention is further described with reference to the accompanying drawings.
As shown in fig. 1-4, a high-purity liquid chlorine tank car unloading device comprises a liquid chlorine tank car V01 and at least two liquid chlorine storage tanks, two of which are provided in this embodiment, including a first liquid chlorine storage tank V02 and a second liquid chlorine storage tank V03, a liquid phase port and a gas phase port are provided at the top of the liquid chlorine tank car V01, the liquid phase port of the liquid chlorine tank car V01 is communicated with one end of a liquid phase crane pipe L01B, the other end of the liquid phase loading arm L01B is communicated with one end of a liquid chlorine discharging pipeline L04, the other end of the liquid phase discharging pipeline L04 is communicated with inlets of a first liquid chlorine storage tank V02 and a second liquid chlorine storage tank V03, a twelfth pneumatic switch valve AV12, a thirteenth pneumatic switch valve AV13 and a fourteenth pneumatic switch valve V14 are sequentially arranged on the liquid chlorine discharging pipeline L04 along the liquid chlorine discharging direction, wherein a thirteenth pneumatic switching valve AV13 and a fourteenth pneumatic switching valve V14 are located at the inlets of the first liquid chlorine storage tank V02 and the second liquid chlorine storage tank V03, respectively; a gas phase port of the liquid chlorine tanker V01 is communicated with one end of a gas phase crane L01A, the other end of the gas phase crane L01A is communicated with one end of a chlorine gas pressurizing pipeline L03, the other end of the chlorine gas pressurizing pipeline L03 is communicated with an outlet of a liquid chlorine gasifier E01, and an eleventh pneumatic switch valve AV11 is arranged on a chlorine gas pressurizing pipeline L03; the inlet of the liquid chlorine gasifier E01 is communicated with one end of a liquid chlorine storage tank discharge pipe L15, the other end of the liquid chlorine storage tank discharge pipe L15 is respectively communicated with the outlets of a first liquid chlorine storage tank V02 and a second liquid chlorine storage tank V03 through a liquid chlorine metering pump P01, and a ninth pneumatic switch valve AV09 and a tenth pneumatic switch valve AV10 are respectively arranged at the outlets of the first liquid chlorine storage tank V02 and the second liquid chlorine storage tank V03 on the liquid chlorine storage tank discharge pipe L15.
Wherein, the pipeline that the gas-phase oil filling riser L01A and eleventh pneumatic ooff valve AV11 correspond to and connect, its the pipeline that the liquid-phase oil filling riser L01B and twelfth pneumatic ooff valve AV12 correspond to and connect, the above-mentioned two pipelines are connected through oil filling riser communicating tube L02 (namely the liquid-phase oil filling riser L01B and the gas-phase oil filling riser L01A are connected through oil filling riser communicating tube L02), set up the seventh pneumatic ooff valve AV07 on the said oil filling riser communicating tube L02; a crane connecting pipe L02 connected between the liquid phase crane L01B and the seventh pneumatic switch valve AV07 is connected to a chlorine gas pressurizing pipeline L03 through a crane liquid return pipeline L10, and a sixteenth pneumatic switch valve AV16 is arranged on the crane recovery pipeline L10; a filling pipe communicating pipe L02 connected between the liquid phase filling pipe L01B and the seventh pneumatic switch valve AV07 is connected to a chlorine gas analysis system through a liquid phase analysis pipeline L12, and an eighth pneumatic switch valve AV08 is arranged on the liquid phase analysis pipeline L12; a crane connecting pipe L02 connected between the liquid phase crane L01B and the seventh pneumatic switch valve AV07 is connected to a tail gas system through a liquid phase crane emptying pipeline L14, and the liquid phase crane emptying pipeline L14 is provided with a second safety valve SV 02; and a second pressure gauge PIA02 is arranged on a crane pipe communicating pipe L02 connected between the liquid phase crane pipe L01B and the seventh pneumatic switch valve AV07, and the second pressure gauge PIA02 has an alarm function.
A crane connecting pipe L02 connected between the gas phase crane L01A and the seventh pneumatic switch valve AV07 is connected to a vacuum system through a vacuum tail gas inlet pipeline L05, and a fifth pneumatic switch valve AV05 is arranged on the vacuum tail gas inlet pipeline L05; a filling pipe communicating pipe connected between the gas phase filling pipe L01A and the seventh pneumatic switch valve AV07 is connected to a chlorine recovery system through a pressure relief pipeline L09, and a fifteenth pneumatic switch valve AV15 is arranged on the pressure relief pipeline L09; a filling pipe communicating pipe L02 connected between the gas phase filling pipe L01A and the seventh pneumatic switch valve AV07 is connected to a chlorine gas analysis system through a gas phase analysis pipeline L11, and a sixth pneumatic switch valve AV06 is arranged on the gas phase analysis pipeline L11; a crane connecting pipe connected between the gas phase crane L01A and the seventh pneumatic switch valve AV07 is connected to a tail gas system through a gas phase crane emptying pipeline L13, and the liquid phase crane emptying pipeline L13 is provided with a first safety valve SV 01; a crane connecting pipe L02 connected between the gas phase crane L01A and the seventh pneumatic switch valve AV07 is connected to a high purity nitrogen system through a nitrogen pipeline L07, and a third pneumatic switch valve AV03 is arranged on the nitrogen pipeline L07; a first pressure gauge PIA01 is arranged on a crane pipe communicating pipe L02 connected between the gas phase crane pipe L01A and the seventh pneumatic switch valve AV07, and the first pressure gauge PIA01 has a remote transmission alarm function.
The vacuum system adopts a Venturi vacuum pump VG01 with a nitrogen power source, a nitrogen inlet of the Venturi vacuum pump is connected to a nitrogen pipeline L07, and a fourth pneumatic switch valve AV04 is arranged at the nitrogen inlet; an outlet of the venturi vacuum pump VG01 is connected to a tail gas emptying system; and a tail gas inlet of the Venturi vacuum pump VG01 is connected with a vacuum tail gas inlet pipeline L05.
The liquid chlorine gasifier E01 is a closed jacket water bath gasifier, a liquid level meter port, a liquid chlorine inlet and a chlorine gas outlet are arranged in an inner cavity of the gasifier, the liquid level meter port is provided with a liquid level meter LICA01, the liquid level meter LICA01 is controlled by a liquid chlorine metering pump P01 in a linkage mode, the liquid chlorine inlet is inserted into the bottom of the inner cavity of the gasifier, the liquid chlorine inlet is connected with a liquid chlorine storage tank discharge pipe L15, the chlorine gas outlet is connected with a chlorine gas pressurization pipeline L03, the chlorine gas pressurization pipeline L03 is provided with a second thermometer TIA02 and a third pressure gauge PIA03, the second thermometer TIA02 and the third pressure gauge PIA03 are provided with a remote transmission alarm function, the chlorine gas pressurization pipeline L03 is connected to a tail gas treatment system through a liquid chlorine gasifier vent pipeline L16, and a third safety valve SV03 is arranged on a liquid chlorine gasifier vent pipeline L16; the gasifier jacket is provided with a PH meter PHIA01 which has a remote transmission alarm function; the gasifier jacket is provided with a first thermometer TIA01 and electric heating, and the first thermometer TIA01 is controlled in linkage with the electric heating.
And a second pneumatic switch valve AV02 is arranged at one end of the liquid phase crane pipe L01B connected with the liquid phase port of the liquid chlorine tanker V01, and a first pneumatic switch valve AV01 is arranged at one end of the gas phase crane pipe L01A connected with the gas phase port of the liquid chlorine tanker V01.
The unloading method of the high-purity liquid chlorine unloading device comprises the following steps:
1) the crane tube is connected: the gas phase filling riser and the liquid phase filling riser of the liquid chlorine filling riser are respectively connected with a gas phase port and a liquid phase port of the liquid chlorine tank truck; and (3) opening the second pneumatic switch valve AV02 of the liquid-phase crane pipe and the first pneumatic switch valve AV01 of the gas-phase crane pipe, wherein the first valve MV01 and the second valve MV02 are in a closed state, the seventh pneumatic switch valve AV07 of the crane pipe communicating pipe is in an open state, and other pneumatic switch valves are in a closed state.
2) Pressure maintaining and leakage testing: opening a third pneumatic switch valve AV03 of the nitrogen pipeline, closing the third pneumatic switch valve AV03 when the pressure (PIA 01/02) of the crane pipe communicating pipe L02 is increased to 0.6MPa, and maintaining the pressure for 5 min; if the pressure is not changed, the crane pipe is well connected with the tank wagon preliminarily;
3) vacuumizing and purging: opening a fourth pneumatic switch valve AV04 and a fifth pneumatic switch valve AV05 of the Venturi vacuum pump, vacuumizing and purging the crane pipe connecting pipe L02 and the crane pipe L01 for 10min, and closing the fourth pneumatic switch valve AV04 and the fifth pneumatic switch valve AV05 after the purging is finished;
4) secondary pressure maintaining and leakage testing: opening a third pneumatic switch valve AV03, closing the third pneumatic switch valve AV03 when the pressure of the loading arm connecting pipe (PIA 01/02) is increased to 0.8MPa, and maintaining the pressure for 30 min; if the pressure is not changed, the crane pipe is ensured to be connected with the tank wagon completely;
5) secondary vacuumizing and purging: opening a fourth pneumatic switch valve AV04 and a fifth pneumatic switch valve AV05 of the Venturi vacuum pump, vacuumizing and purging the crane pipe connecting pipe L02 and the crane pipe L01 for 30min, and closing the fourth pneumatic switch valve AV04 and the fifth pneumatic switch valve AV05 after the purging is finished;
(6) sampling and analyzing: closing a seventh pneumatic switch valve AV07 of the loading arm communicating pipe, opening a first valve MV01 and a second valve MV02, then opening a sixth pneumatic switch valve AV06 of the gas phase analysis pipeline and an eighth pneumatic switch valve AV08 of the liquid phase analysis pipeline in sequence for sampling analysis, and closing a sixth pneumatic switch valve AV06 and an eighth pneumatic switch valve AV08 after sampling;
(7) gasification, pressurization and discharge: after sampling and analysis are qualified, opening a tenth pneumatic switch valve AV10 at the bottom outlet of a second liquid chlorine storage tank V03, a liquid chlorine metering pump P01, a liquid chlorine gasifier E01 for heating, an eleventh pneumatic switch valve AV11 of a chlorine pressurization pipeline, a twelfth pneumatic switch valve AV12 of a liquid chlorine discharge pipeline and a thirteenth pneumatic switch valve AV13 at the inlet of the first liquid chlorine storage tank, and closing the valves after unloading;
8) pressure relief and backflow: opening a fifteenth pneumatic switch valve AV15 of the pressure relief pipeline, relieving pressure of the tank car and the loading arm, reducing the pressure of a loading arm communicating pipe to 0.1MPa, closing a fifteenth pneumatic switch valve AV15 of the pressure relief pipeline, opening a sixteenth pneumatic switch valve AV16 of the loading arm liquid return pipeline, pressing residual liquid chlorine of the loading arm into the tank car, and closing a sixteenth pneumatic switch valve AV16, a first valve MV01 and a second valve MV02 of the loading arm liquid return pipeline;
9) vacuumizing and blowing and maintaining the pressure at negative pressure: and opening a fourth pneumatic switch valve AV04 and a fifth pneumatic switch valve AV05 of the Venturi vacuum pump, vacuumizing and purging the crane pipe connecting pipe L02 and the crane pipe L01 for 20min, closing the fourth pneumatic switch valve AV04 and the fifth pneumatic switch valve AV05, maintaining the negative pressure of-0.1 MPa for about 20min, and confirming that the first valve MV01 and the second valve MV02 are closed well if the pressure is unchanged.
In order to avoid accumulation of nitrogen trichloride and leakage of a gasifier, a high-purity liquid chlorine unloading device adopts the following control mode for a liquid chlorine gasifier (E01):
a. the liquid level meter LICA01 of the liquid chlorine gasifier controls the liquid level height by interlocking with the liquid chlorine metering pump P01, so that the phenomenon that the gasifier is unstable due to too much liquid chlorine is prevented;
b. the liquid chlorine gasifier E01 adopts a feed inlet to insert the bottom feed downwards, so that the bottom feed can prevent the accumulation of nitrogen trichloride;
c. heating the gasifier by adopting water bath, and controlling the temperature at 30 ℃;
d. a PH meter PHIA01 is arranged in the water bath for detection and alarm, the gasifier jacket is closed, and the corrosion and leakage of the gasifier inner cavity and the overflow of liquid chlorine are prevented;
e. the chlorine pressurization pipeline of the gasifier is provided with a second thermometer TIA02, a third pressure gauge PIA03 alarm and a safety valve SV03, so as to prevent the overpressure of the liquid chlorine unloading device.
The high-purity liquid chlorine unloading device is characterized in that a first safety valve SV01 and a second safety valve SV02 are arranged on a crane pipe communicating pipe L02, so that overpressure can be prevented in the unloading process, and the operation safety of a system is ensured.
Claims (6)
1. The unloading device is characterized by comprising a liquid chlorine tank wagon (V01), a loading arm (L01) and at least two liquid chlorine storage tanks, wherein the liquid chlorine storage tanks comprise a first liquid chlorine storage tank (V02) and a second liquid chlorine storage tank (V03), the top of the liquid chlorine tank wagon (V01) is provided with a liquid phase port and a gas phase port, the liquid phase port of the liquid chlorine tank wagon (V01) is communicated with one end of the liquid phase loading arm (L01B), the other end of the liquid phase loading arm (L01B) is communicated with one end of a liquid chlorine unloading pipeline (L04), the other end of the liquid chlorine unloading pipeline (L04) is communicated with inlets of the first liquid chlorine storage tank (V02) and the second liquid chlorine storage tank (V03), and inlet ports of the first liquid chlorine storage tank (V02) and the second liquid chlorine storage tank (V03) are respectively provided with a thirteenth pneumatic switch valve (AV 13) and a fourteenth pneumatic switch valve (AV 14); the gas phase port of the liquid chlorine tanker (V01) is communicated with one end of a gas phase crane pipe (L01A), the other end of the gas phase crane pipe (L01A) is communicated with one end of a chlorine gas pressurizing pipeline (L03), and is communicated with the outlet of a liquid chlorine gasifier (E01) through the other end of the chlorine gas pressurizing pipeline (L03); the inlet of the liquid chlorine gasifier (E01) is communicated with one end of a liquid chlorine storage tank discharging pipe (L15), the other end of the liquid chlorine storage tank discharging pipe (L15) is respectively communicated with the outlets of a first liquid chlorine storage tank (V02) and a second liquid chlorine storage tank (V03) through a liquid chlorine metering pump (P01), and the outlets of the first liquid chlorine storage tank (V02) and the second liquid chlorine storage tank (V03) are respectively provided with a ninth pneumatic switch valve (AV 09) and a tenth pneumatic switch valve (AV 10).
2. The high-purity liquid chlorine tank truck unloading device according to claim 1, characterized in that: the gas-phase crane pipe (L01A) and the liquid-phase crane pipe (L01B) are connected through a crane pipe communicating pipe (L02), and an eleventh pneumatic switch valve (AV 11) and a twelfth pneumatic switch valve (AV 12) are respectively arranged on the gas-phase crane pipe (L01A) and the liquid-phase crane pipe (L01B) at the rear of the pipeline connection; a seventh pneumatic switch valve (AV 07) is arranged on the crane pipe communicating pipe (L02); a pipeline between a liquid phase crane pipe (L01B) and a seventh pneumatic switch valve (AV 07) on the crane pipe communicating pipe (L02) is connected with a chlorine pressurization pipeline (L03) through a crane pipe liquid return pipeline (L10), is connected with a chlorine analysis system through a liquid phase analysis pipeline (L12), is connected with a tail gas system through a liquid phase crane pipe emptying pipeline (L14), and a sixteenth pneumatic switch valve (AV 16) is arranged on the crane pipe liquid return pipeline (L10); the liquid phase analysis line (L12) is provided with an eighth pneumatic on-off valve (AV 08); the liquid phase crane pipe emptying pipeline (L14) is provided with a second safety valve (SV 02); and a second pressure gauge (PIA 02) is arranged on a crane pipe communicating pipe (L02) connected between the liquid phase crane pipe (L01B) and the seventh pneumatic switch valve (AV 07), and the second pressure gauge (PIA 02) has an alarm function.
3. The high-purity liquid chlorine tank truck unloading device according to claim 2, characterized in that: a vacuum system is connected to a pipeline between a gas-phase crane pipe (L01A) and a seventh pneumatic switch valve (AV 07) on the crane pipe communicating pipe (L02) through a vacuum tail gas inlet pipeline (L05), a chlorine recovery system is connected to the pipeline through a pressure relief pipeline (L09), a chlorine analysis system is connected to the pipeline through a gas-phase analysis pipeline (L11), a tail gas system is connected to the pipeline through a gas-phase crane pipe emptying pipeline (L13), a high-purity nitrogen system is connected to the pipeline through a nitrogen pipeline (L07), and a fifth pneumatic switch valve (AV 05) is arranged on the vacuum tail gas inlet pipeline (L05); a fifteenth pneumatic switching valve (AV 15) is arranged on the pressure relief pipeline (L09); the gas phase analysis line (L11) is provided with a sixth pneumatic on-off valve (AV 06); the gas phase crane pipe emptying pipeline (L13) is provided with a first safety valve (SV 01); a third pneumatic switch valve (AV 03) is arranged on the nitrogen pipeline (L07); a first pressure gauge (PIA 01) is arranged on a crane pipe communicating pipe (L02) connected between the gas-phase crane pipe (L01A) and the seventh pneumatic switch valve (AV 07), and the first pressure gauge (PIA 01) has a remote transmission alarm function.
4. The high-purity liquid chlorine tank truck unloading device according to claim 3, characterized in that: the vacuum system adopts a Venturi vacuum pump (VG 01) with a nitrogen power source, a nitrogen inlet of the Venturi vacuum pump is connected to a nitrogen pipeline (L07), and the nitrogen inlet is provided with a fourth pneumatic switch valve (AV 04); the outlet of the Venturi vacuum pump (VG 01) is connected to the tail gas treatment system through a vacuum emptying pipeline (L06); and a tail gas inlet of the Venturi vacuum pump (VG 01) is connected with a vacuum tail gas inlet pipeline (L05).
5. The high-purity liquid chlorine tank truck unloading device according to claim 1, characterized in that: the liquid chlorine gasifier (E01) is a closed jacket water bath type gasifier, an inner cavity of the closed jacket water bath type gasifier is provided with a liquid level meter port, a liquid chlorine inlet and a chlorine gas outlet, the liquid level meter port is provided with a liquid level meter (LICA 01), the liquid level meter (LICA 01) is in linkage control with a liquid chlorine metering pump (P01), the liquid chlorine inlet is inserted into the bottom of the inner cavity of the gasifier, the liquid chlorine inlet is connected with a liquid chlorine storage tank discharge pipe (L15), the chlorine gas outlet is connected with a chlorine gas pressurization pipeline (L03), the chlorine gas pressurization pipeline (L03) is provided with a second thermometer (TIA 02) and a third pressure gauge (PIA 03), the second thermometer (TIA 02) and the third pressure gauge (PIA 03) are provided with a remote alarm function, the chlorine gas pressurization pipeline (L03) is connected to a tail gas treatment system through a liquid chlorine gasifier emptying pipeline (L16), and a third safety valve (SV 03) is arranged on a liquid chlorine gasifier emptying pipeline (L16); the gasifier jacket is provided with a PH meter (PHIA 01), and the PH meter (PHIA 01) is provided with a remote alarm function; the vaporizer jacket is provided with a first thermometer (TIA 01) and electrical heating, the first thermometer (TIA 01) being interlocked with the electrical heating.
6. The high-purity liquid chlorine tank truck unloading device according to claim 1, characterized in that: one end that liquid phase oil filling riser (L01B) and liquid chlorine tank wagon (V01) liquid phase mouth link to each other sets up second pneumatic switch valve (AV 02), the one end that gaseous phase oil filling riser (L01A) and liquid chlorine tank wagon (V01) gaseous phase mouth link to each other sets up first pneumatic switch valve (AV 01).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921426882.2U CN210950783U (en) | 2019-08-30 | 2019-08-30 | High-purity liquid chlorine tank car device of unloading |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921426882.2U CN210950783U (en) | 2019-08-30 | 2019-08-30 | High-purity liquid chlorine tank car device of unloading |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210950783U true CN210950783U (en) | 2020-07-07 |
Family
ID=71375619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921426882.2U Active CN210950783U (en) | 2019-08-30 | 2019-08-30 | High-purity liquid chlorine tank car device of unloading |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210950783U (en) |
-
2019
- 2019-08-30 CN CN201921426882.2U patent/CN210950783U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110762387A (en) | High-purity liquid chlorine tank truck unloading device and unloading method thereof | |
| CN111609306B (en) | Safe and reliable's multi-functional hydrogen unloads system | |
| CN106335866A (en) | Device used for transferring liquid from inside of sealed container | |
| CN203363663U (en) | Nitrogen pressure control system for chemical storage tank | |
| CN106153275A (en) | A kind of gas pressure vessel air-leakage test and helium leak test method | |
| CN104122049B (en) | A kind of high pressure airtightness testing method | |
| CN105691970B (en) | A kind of sealing fluid reservoir of flexible inner bag compensation device | |
| CN111120857A (en) | Inflating device applied to gas transmission system | |
| CN104110574A (en) | Cryogenic gas condensing and recycling system and method | |
| CN210950783U (en) | High-purity liquid chlorine tank car device of unloading | |
| CN114033965A (en) | Filling control system for single-component or multi-component gas | |
| CN106289747A (en) | Water and gas dual-purpose relief valve cold conditions comprehensive performance testing device | |
| CN215479690U (en) | Sealed oil discharge device of crude oil tank truck | |
| CN212644225U (en) | Inflating device applied to gas transmission system | |
| CN210687760U (en) | Coal mine liquid carbon dioxide direct injection system | |
| CN213900732U (en) | Device for recovering residual gas in gas cylinder | |
| CN107473580A (en) | A kind of optical fiber carries hydrogen production device and method | |
| CN210603769U (en) | Ammonia leakage test device | |
| CN112811382A (en) | Sealed oil discharge device of crude oil tank truck | |
| CN110645474B (en) | Colliery liquid carbon dioxide direct injection system and technology | |
| CN204005219U (en) | A kind of cryogenic gas condensate recovery system | |
| CN218409526U (en) | Carbon dioxide fills dress device | |
| CN111365610A (en) | Discharging pressure regulating system applied to hydrogen storage type hydrogen adding station | |
| CN216386194U (en) | Liquid chlorine unloads automobile-used oil filling riser leak test system | |
| CN204750824U (en) | A liquid storage pot for machine seals and washes |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |