Explosion-proof Gas Media Mineral Insulated Cable Electric Heater

Gas media explosion-proof electric heater (hereinafter referred to as gas electric heater) is an electric heating device specially used for heating natural gas, petroleum gas and other flammable and explosive gases in a forced flow state, and can effectively solve the technical problems of heat supplement for medium of natural gas, petroleum gas etc converting from liquid to gas state or from high pressure to low pressure state.

Gas electric heaters are widely used in oil and gas fields, oil refineries, chemical plants, pharmaceutical plants, city gas network and other enterprise sectors to ensure safe, reliable and efficient operation of the gas medium process.

Technical Properties

1. The gas electric heater uses mineral insulated (MI) heating cable as heating element to transfer heat to the heat exchange chamber via a heat medium. The heat between the heated medium and the heating element are indirectly transmitted.

2. The heated gas is guided to flow along the sparger in the heat exchange chamber, and has a good flow heat exchange effect.

3. A temperature sensor being set at the outlet of the heat exchange chamber, the temperature automatic control can be realized after being connected with the matched temperature control cabinet.

4. The conventional pressure grade of 0.6~12MPa can be designed and produced, and higher pressure (12~25MPa) grade can also be done for professional users.

5. In explosion-proof locations, device connections and electrical wiring are in compliance with explosion-proof specifications with an explosion-proof rating dIIB T1-T6.

Working Principle

The cold medium enters the heat exchange chamber via the inlet pipe, guides the tortuous turbulence along the baffle plate, and flows to the outlet pipe at a uniform temperature after a predetermined heat exchange process. A temperature sensor being installed in the outlet pipe of the heat exchange chamber and the temperature signal being collected and transmitted to the electrical control system, the primary circuit electrical component is controlled by the temperature regulator to realize automatic temperature control. At the same time, it is equipped with a flow lockout device to stop automatically the power output of the electric heating element when the medium flow is relatively small while to resume the normal heating by increasing the flow rate immediately and an over-temperature protection device is provided.

Parameter and Specification

1．Model Meaning

Gas explosion-proof electric heater

2．Main engineering data

Gas electric heater outline drawing

Table 1: QJRQ Parameter and Size of Vertical Gas Electric Heater

Pasia Industries is a scientific and technological enterprise specializing in researching, developing, producing, installing and providing technical consultation and service for mineral insulated heating cables, heating elements and finished heaters as well as welded honeycomb products for filtering, shielding, sealing and guiding. Located in Puyuan high-tech park, Zhejiang province, it covers an area of more than 10 hectares, with a construction area of more than 50,000 square meters. It possesses a convenient transportation, about 150 kilometers from Shanghai in the north and 40 minutes from Hangzhou Xiaoshan international airport in the south.

With the most professional production lines and the highest automation level in China, Pasia produces mineral insulated heating cables, heating elements and finished heaters, honeycomb cores of stainless steel, brass, nickel, aluminium and other metal or metal alloys according to international standards. Pasia is one of the top four professional manufacturers of industry in the world on capacity and sales. As leading technological products, they possesses advanced properties of good quality, many varieties, full specification range, wide application, long service life, good safety and easy maintenance etc., and have been successfully applied to oil and gas (extraction, transportation, storage, etc.), chemical industry （petrochemical industry, fine chemical, pharmaceutical, etc.), power (nuclear power, solar power, etc.), construction (melting ice and snow), railway, aviation, metallurgy, electronic and et al for the applications as heat tracing and heating, detecting, signaling, power transmission, as well filtering, shielding, guiding and sealing. The company has become one manufacturer of the few in the world of completely electric heating technology and products of four categories including constant wattage, temperature self-regulating, MI heating cable and skin effect resistance and one of the top three wire electric heating products suppliers. The honeycomb core has been widely used by many clients on filtering, water treatment, structure platform with high requirement on flatness, shielding, turbine sealing and straightening etc. It can not only provide complete categories of professional products, also provides customers with solutions, consulting, project reply, EPC project general contracting services which can even be extended to the services including safe operation for maintenance etc. So far, the company has possessed 25 related patented technologies, 13 national new products, and 12 national technological innovation projects.

Upholding a company spirit of leading innovation and win-win cooperation, Pasia has become one of the few in the industry who possesses complete capacity of research and development, design, production and installation of mineral insulated heating cable and its heating equipment, honeycomb core and its parts or modules both home and abroad, relying on professional team, advanced management means, close work with related universities, design institutes and scientific research units, industry leading R&D testing capacity, under the ISO9001 quality system. After several years’ hard and persistent efforts, Pasia have the ability to supply a complete set of products, excellent technical support and perfect follow-up service. A variety of products have not only been applied to meet the requirements from domestic market, but also exported to many countries and regions such as Europe, Asia, Africa and America to serve different categories of purposes. It receives a high visibility and reputation from the industry. Over the past years, the company has involved in thousands of projects from all walks of life, among which the most influential ones are:the explosion-proof natural gas electric heater at Datong natural gas gate station in Shanxi province; Electric heater for paint material for the production bases of Hempel (USA) paint company in Kunshan and Guangzhou; Electric heaters for Tongyi chemical system in Beijing, Lanzhou, Shanghai and Shandong; Complete heating and tracing equipment for large oil and gas fields in Jiangsu oilfield, Benin, Angola, Thailand, Myanmar, Kazakhstan, the UK, Canada; the wind or water tunnels of honeycomb core in Singapore, India, USA and UK, shielding honeycomb core applications from many foreign countries, honeycomb seals for the turbines from Russia etc.

Insists on serving market with sincerity, securing quality with technology, leading innovation with study and driving development with passion, Pasia has become a well-known provider of advanced heating technology solutions at home and abroad, and one of the fastest growing members in the industry.