The steel industry is also knownblack metallurgical industry. The iron and steel industry is an important foundationindustrial sector, is the developmentnational economyand the material basis of national defense construction.metallurgical industryThe level is also a measure of a country's industrialization.

The smelting of steel is a very complex process, and one of the essential raw materials in the process is natural gas.

Natural gas is a kind of gas mainly composed of methane (CH4) A mixture of hydrocarbons, usually with a volume percentage exceeding85%, is an environmentally friendly non-renewable gaseous fossil fuel, extracted from mineral deposits on Earth. It is a clean fuel with high efficiency.

In iron and steel industry production, the main use of natural gas is ironmaking, it is used as a reducing agent. In the gas-based direct reduction of iron (DRI) Natural gas is used in the production process, which needs to be converted into usable reducing gas.H2andCOhigher content. Global90More than%DRIThe equipment uses natural gas. ForDRIIt is reformed to produce a reducing gas, which is then used in the reduction of iron ore. The main reforming reactions are (i）2CH4 O2 = 2CO 4 H2，（ii）CH4 H2O = CO 3 H2, and (iii）CO2 H2 = CO H2O。

At the same time, natural gas is also injected into the blast furnace as an auxiliary fuel, which is rich inO2The hot blast is injected together. InjectionNGThe purpose as an auxiliary fuel is to reduce the specific consumption of coke. injection in blast furnaceNGThe coke substitution rate achieved by the gas is in1.3To1.4Between. InjectionBFofNGfurnaces are providedH2andCOThe composition of the reducing gas, these gases move on the furnace shaft and participate in the reduction reaction of iron oxides.

The main component of natural gas is methane. It is worth noting that methane is a flammable and explosive gas. The amount of methane in the smelting process is huge. A little carelessness in the operation process may cause methane to leak in the air. If it is not handled in time, it may cause Explosion and fire, bring huge losses, and even casualties.

Therefore, the place where natural gas is stored, used and produced in the steel plant must be installed with a combustible gas alarm. When the gas leaks in the industrial environment, the gas alarm detectsGas concentrationUp to the explosion or poisoning alarm settingcritical pointThe gas alarm will be issued.Alarm signal. to remind staff to takeSafety measuresGas alarm is equivalent to automaticFire extinguisherThat type, can be installed to drive the exhaust, cut off, spray system, to prevent the occurrence of explosion, fire, poisoning accidents, so as to protectSafety HealthProduction。

Here,To recommend a catalytic combustion sensorTGS6814-D01. This is a combustible gas sensor developed by Figaro in Japan. Japan's Figaro has been working in the field of gas sensors for decades. It has accumulated deep technology and a very good reputation. The sensors they produced are very trustworthy. So...TGS6814-D01Where is the good thing?

JustGB15322.1-2619For the basis of judgment, useTGS6814-D01The alarm made can be completely in line with the standard. Linearity errors, needless to say, must be beyond the specifications to meet the requirements. Mainly speaking of long-term stability, anti-drop, anti-poisoning performance.

Long-term stability has always been the advantage of Figaro sensors, and there is no need to worry about this.TGS6814-D01The life expectancy can also reach ten years. How can there be such a long life if the long-term stability is not good?

Anti-poisoning anti-interference performance is a very important indicator of national standards.TGS6814-D01It is made of filter material. The structure and material formula inside are the patented and exclusive formula of Figaro. Therefore, the performance of anti-jamming and anti-poisoning is far better than that of peers. For example, the anti-poisoning test in the national standard is40Minutes, peers are barely up to standard,TGS6814-D01can persist40Hours, far beyond the specifications. In terms of anti-interference,TGS6814-D01It directly filters out the interference gas, and naturally there is no interference.

The ability to resist falling, Figaro's process has also been developed for a long time, with deep technical accumulation,TGS6814-D01The internal detection ball is made smaller and lighter, so the inertia is also smaller, and the internal structure has been redesigned, so the ability to resist drop impact is also greatly improved.

Figaro also took another very powerful peer brand products to do a comparative test. Results showTGS6814-D01In the long-term stability, anti-jamming anti-poisoning ability, anti-drop performance is much better, power consumption is also lower. And this peer's products are also recognized by the market. Enough to proveTGS6814-D01Excellent.

The following isTGS6814-D01The basic parameters:

      1）Measurement range:0-100%LEL 
      22) Supply voltage:1.80V±0.05V  AC/DC 
      32) Power consumption of heater:324mW(typical)
      4) Output signal:11mv（5000ppmmethane)
      5) Temperature range:-40~70 （℃）

Details please consult。