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A device and method for filling and unloading liquid ammonia

A liquid ammonia, loading and unloading arm technology, applied in the direction of container filling method, container discharge method, equipment loaded into pressure vessels, etc., can solve the problems of simple function of the application device, complicated operation process, inefficient safety monitoring, etc., and achieve functional Comprehensive, remarkable effect, simple device and method

Active Publication Date: 2016-05-04
WENGFU (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003]At present, the method of filling and unloading liquid ammonia is often based on one-way operation, and the operation process is cumbersome. The application device has simple functions, small scale, and complicated operation process. Safety monitoring is inefficient, and there is an urgent need for a multi-functional device and method that integrates liquid ammonia filling and unloading to effectively ensure the safety and efficiency of liquid ammonia filling and unloading.
[0004] In the Chinese patent database, the application documents related to the filling and unloading of liquid ammonia include ZL201320422784.8 "A Liquid Ammonia Loading and Unloading System", which is a utility model patent of the Wengfu (Group) Co., Ltd. , unloading is effective, but it needs to be further upgraded to play a greater role

Method used

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  • A device and method for filling and unloading liquid ammonia
  • A device and method for filling and unloading liquid ammonia

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Embodiment 1

[0025] A (group) limited liability company adopts the present invention, figure 1 It is a structural schematic diagram of the liquid ammonia filling and unloading device of the present invention; figure 2 It is the block diagram of the quantitative control system for loading and unloading;

[0026] A device for filling and unloading liquid ammonia, comprising an ammonia buffer storage tank 3, a loading and unloading arm, and a transfer pump 4, characterized in that the ammonia buffer storage tank 3 is connected to a transfer pump 4, and the transfer pump 4 is connected to a liquid phase main line 5, A reflux pipeline is also provided at the outlet of the delivery pump 4, and a reflux regulating valve 6 is arranged on the reflux pipeline; the main liquid phase pipeline 5 passes through the quick cut-off valve 7, the flame arrester 8, the mass flow meter 9 and its regulating valve on the liquid ammonia pipeline in sequence 10. Manual ball valve 11 and liquid ammonia loading an...

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PUM

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Abstract

The invention relates to a device and a method for filling and unloading liquid ammonia. The device comprises a liquid ammonia buffer storage tank, a liquid ammonia filling and unloading arm and a delivery pump, and is characterized in that the liquid ammonia buffer storage tank is connected with the delivery pump; the delivery pump is connected with a liquid phase main pipeline; an outlet of the delivery pump is further provided with a backflow pipeline; a backflow regulating valve is arranged on the backflow pipeline; the liquid phase main pipeline passes through a rapid cut-off valve, a flame arrester, a mass flowmeter, a regulating valve of the mass flowmeter, a manual ball valve and the liquid ammonia filling and unloading arm on a liquid ammonia pipeline in sequence; the mass flowmeter and the regulating valve of the mass flowmeter are connected with a filling and unloading quantitative control system; a tank car is further connected with a gas phase filling and unloading arm; the gas phase filling and unloading arm is connected with a gas phase main pipeline or a compressor via a pipeline provided with a pressure meter, a flame arrester and a pneumatic regulating valve in sequence; the gas phase filling and unloading arm is then connected with an ammonia buffer storage tank; and the liquid phase main pipeline is further connected with the gas phase main pipeline via a safety valve. The device and the method can be applied to the field of filling and unloading various easily liquified liquid such as liquid ammonia, dimethyl ether and natural gas.

Description

technical field [0001] The invention relates to the filling and unloading of easily liquefied fluids, in particular to a device and method for filling and unloading liquefied ammonia. Background technique [0002] Synthetic ammonia is one of the most produced inorganic compounds in the world and has a wide range of industrial uses. Due to the long distance between liquid ammonia production and application sites, the filling and unloading of liquid ammonia is one of the basic operating units in the production, application, sales and transportation of synthetic ammonia. Because ammonia is a colorless, toxic gas with a pungent smell , when it comes to the production operation of ammonia, safety management is particularly important. It is necessary to strictly prevent leakage, safety is the premise of production. [0003] At present, the method of filling and unloading liquid ammonia is usually based on one-way operation, the operation process is cumbersome, the application dev...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F17C5/02F17C13/02F17C13/04
Inventor 王玉训杨毅赵建勇饶轶晟杜秀荣
Owner WENGFU (GRP) CO LTD
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