1、 Project Background

In order to limit the nitrogen content in the flue gas during the production process, power plants must use liquid ammonia. So, there will be a dedicated place for storing liquid ammonia in the work area, which is also called the power plant ammonia area.

Ammonia is a colorless gas with a pungent odor that can burn the skin, irritate the eyes and respiratory system, and pose a serious threat to life if inhaled in large quantities.

The ammonia area of the power plant has quite strict management conditions, and relevant personnel need to undergo professional training. According to the requirements of documents such as the Regulations on the Safety Management of Hazardous Chemicals and the Interim Provisions on the Supervision and Management of Major Hazardous Sources of Hazardous Chemicals, real-time monitoring of liquid ammonia in the ammonia area of power plants is required, so an online ammonia detector needs to be installed.

2、 Project requirements

Due to the storage of liquid ammonia in Dalian Ganjing Power Plant, ammonia gas detectors need to be installed to prevent the harm caused by its leakage. And the requirements for ammonia gas detectors in the ammonia area are relatively strict. One is that the accuracy needs to meet the detection requirements; Secondly, it is necessary to be able to achieve real-time detection of ammonia content in the air; Thirdly, it is necessary to have a sufficiently fast reaction speed

The core of the Shenzhen Guoan ammonia detector not only uses foreign brand gas sensors, but also has the characteristics of high accuracy and strong stability; And it is also an inherently safe circuit design, equipped with an explosion-proof shell, which can be used with confidence in the ammonia area of power plants.

After communication and exchange with Shenzhen Guoan, the relevant personnel finally believe that the Shenzhen Guoan online ammonia detector meets its usage requirements.

3、 Solution

According to the relevant requirements of Dalian Ganjing Power Plant, Shenzhen Guoan has equipped it with a Shenzhen Guoan online ammonia detector (high-precision), with optional LCD display and sound and light alarm. It can display real-time on-site detection values and issue local sound and light alarms when ammonia exceeds the standard, greatly improving the safety factor and ensuring the daily operation and production of power plants

At the same time, the high-precision online ammonia detector is also equipped with two sets of relay signals (switch signals) output internally, which are convenient for linkage with the control equipment of the fan or solenoid valve. When the gas exceeds the standard, the relay signal will control the linked equipment to turn on/off, ensuring maximum safety.

4、 Product Features

1. Users can set their own alarm points according to their needs;

2. The core adopts foreign brand gas sensors, which have the characteristics of high precision, strong stability, and strong anti-interference ability;

3. Inherent safety circuit design, equipped with explosion-proof casing, can be used even in harsh environments;

4. Equipped with full range temperature and humidity compensation and data correction functions, greatly improving the accuracy and stability of the product;

The structural design of 5. * is simple and convenient for installation and wiring, saving costs.

6. The product has obtained certifications such as CE, ROSH, explosion-proof, ISO14001, ISO9001, etc;

7. Built in buttons+factory reset function to avoid personnel misoperation;

8. The product comes with a one-year factory warranty and comprehensive after-sales service;

5、 Installation method

How to install an ammonia detector? Generally, ammonia detectors should be installed as close as possible to the leakage source. Professionally speaking, the installation of an ammonia detector should be determined based on the molecular weight or vapor weight of ammonia.

The molecular weight of ammonia is about 17, while that of air is about 29, so the installation position of the ammonia detector can be determined based on this. The ammonia detector only needs to be placed 30-50cm above the leakage source, because ammonia is lighter than air. If a leak occurs, the gas will float upwards. Therefore, if the detector is located slightly above, it can quickly detect the leaked gas. If it exceeds the standard, an alarm will be triggered to remind relevant personnel to take safety measures.