Liquid ammonia loading system
A technology of liquid ammonia and gaseous ammonia, applied in packaging, liquid distribution, conveying or transfer devices, distribution devices, etc., can solve the problem of difficulty in achieving accuracy, quantification, safety, difficulty in ensuring quantitative accuracy, and difficulty in ensuring loading errors, etc. problem, to achieve the effects of simple structure, high reliability, and low probability of ammonia leakage
Inactive Publication Date: 2011-11-16
WENGFU (GRP) CO LTD
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Problems solved by technology
In the process of loading, it is difficult to ensure quantitative accuracy and loading error, it is difficult to unload if there is too much, and it is difficult to install if there is less; and the operation requirements are quite strict, we must ensure 100% safety
The storage tank and the central control room are usually more than 600 meters away from the loading site, and the control room cannot see the scene and is difficult to operate
On-site manual loading is difficult to achieve accurate, quantitative, and safe management requirements
Method used
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Embodiment
[0019] The automatic quantitative liquid ammonia loading system of a company's phosphate fertilizer plant is as attached figure 1 A kind of liquefied ammonia loading system of the present invention shown, comprises management platform 2, loading control cabinet 3 and operating equipment; Management platform 2 is computer operating system, is located in central control room; PLC module, a LCD operation panel (including operation keyboard) and other auxiliary equipment (terminals, power supply, explosion-proof box, etc.);
[0020] The liquid ammonia is transported by the ammonia pump 4, and sent to the tanker 7 through the mass flow meter 5 and the liquid ammonia cut-off valve 6, and the gas ammonia is returned to the storage tank 1 through the gas ammonia cut-off valve 8; the pump 4, the mass flow meter 5, and the liquid ammonia cut-off control The signals of the valve 6 and the gas ammonia cut-off control valve 8 are connected to the loading control cabinet 3, and then connect...
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The invention discloses a liquid ammonia loading system, which relates to liquid conveying. The liquid ammonia loading system mainly comprises a management platform, a loading control cabinet and operating equipment, wherein the management platform is a computer operating system which communicates with a DCS (Data Communication System) in an OPC (Originating Point Code) mode to realize synchronous monitoring of the control cabinet and the operating equipment; the loading control cabinet is used for controlling the operating equipment; the operating equipment comprises a pump, a mass flow meter, a liquid ammonia cutoff control valve and a gas ammonia cutoff control valve; liquid ammonia is conveyed by using the pump and is conveyed to a tank car through the mass flow meter and the liquid ammonia cutoff control valve; and gas ammonia is returned to a storage tank through the gas ammonia cutoff valve. The liquid ammonia loading system has high reliability and high accuracy, and is suitable for the fields of loading and conveying of liquid ammonia.
Description
technical field [0001] The invention relates to a liquid conveying device, in particular to a liquid ammonia loading system. Background technique [0002] Liquid ammonia is a special product, and its canned transportation is not like that of ordinary products. Because ammonia is explosive and toxic, the liquid ammonia loading system involves problems such as equipment safety, accurate measurement, and environmental pollution. In the process of loading, it is difficult to ensure quantitative accuracy and loading error. It is difficult to unload if there is too much, and difficult to install if there is less; and the operation requirements are quite strict, and 100% safety must be ensured. The distance between the storage tank and the central control room is usually more than 600 meters from the loading site, and the control room cannot see the scene and is difficult to operate. On-site manual loading is difficult to achieve accurate, quantitative, and safe management require...
Claims
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Inventor 王春
Owner WENGFU (GRP) CO LTD