Chapter 736

This idea is not alarmist.

Different from Cai Weiguo's energy departments and research institutes, although Cao Jiefang has always been holding GE's thigh and producing OEM foreign products, it is more practical on the whole. What's more, although Jinling factory can't get GE's latest products and core technologies, the technological path and development direction spread to Ge, Jinling factory through personnel exchange and investigation in the United States, is still the same You can get some.

There are some things about coal chemical industry.

Are Ge, Luo Luo, Pratt & Whitney and other industrial gas turbine giants really unable to solve the technical problems in coal chemical industry, as Cai Weiguo and other people in the energy sector have said?

It is true that the public information has not been introduced, and there are no similar products on the product lines of several giants. It seems that they have made no achievements in coal chemical industry.

However, Cao Jiefang knew that as early as the 1970s, foreign industrial gas turbine giants had tried to use coal as the main chemical raw material to gradually replace the widely used oil and natural gas.

Because of the fourth Middle East War, the oil producing countries in the Middle East imposed an oil embargo on the western countries, and the price of oil as the basic raw material soared, which led to the energy crisis of the United States and other western countries.

In this context, western countries hope to find alternatives to oil, so as to reduce their dependence on oil in the Middle East. Coal, as an abundant energy raw material in Europe, America and other western developed countries, naturally becomes the preferred alternative.

So the deep development based on coal was launched one after another at this time.

However, nearly 20 years later, how to use it in practice?

The reason is not hard to guess. The international oil price has stabilized, especially since the mid-1980s. The cheap Middle East oil has provided the western chemical industry with stable and efficient basic materials. The deep development based on coal has naturally become unpopular.

There's no way. Although coal can be seen everywhere, it has a certain advantage over oil in price. However, if you want to use coal as basic chemical raw material for deep processing like oil, the cost is at least 30% higher than that of oil.

Even if it is not used in chemical production, it is not as efficient as oil or natural gas. After all, the thermal efficiency of coal is much lower than that of stone and natural gas.

That's all. The key is that the use of coal will produce a lot of pollution. If you want to reduce the pollution, you need to go to the professional sulfur and slag removal devices, which will virtually push up the cost of using coal.

Especially since the 1970s, with the large-scale application of industrial gas turbines, oil and natural gas are like sleeping with a pillow, and a strong man with a beautiful girl. They are absolutely matched.

Especially in the aspect of deep opening of oil or natural gas, there is no need to do too much treatment. The oil or natural gas can be used as the fuel of industrial gas turbine by simple gasification or liquefaction, so as to generate sufficient power.

This is also the reason why industrial gas turbines are widely used in petroleum exploration, drilling platforms, offshore oil and gas development, petrochemical smelting and other fields.

In contrast, the application of industrial gas turbine in the field of coal is subject to many restrictions. Firstly, the thermal efficiency of coal is insufficient. When the temperature in front of industrial gas turbine is generally about 1100 ℃, the work of industrial gas turbine using gas as fuel is only 32% ~ 36% of that of ordinary thermal power generation. It is necessary to cooperate with steam turbine to do combined cycle in order to achieve ordinary thermal power generation The level of thermal power station.

However, it is only 70% of the thermal power station with oil and natural gas as raw materials and industrial gas turbine as the main kinetic energy.

But the cost is 30% to 50% higher than that of ordinary coal thermal power generation or oil gas turbine power generation.

That's all. The key is that the service life of the industrial gas turbine using gas as the main raw material is surprisingly low, generally no more than 3000 hours. The reason is also very simple. Coal belongs to solid fossil fuel. After gasification and separation, even if it is refined, there will be solid particles in the gasified products.

It's just that the solid particles at this time are only a few microns in size, so it's hard for the naked eye to find them.

However, these solid particles are a great test for the turbine of high-speed industrial gas turbine. The process is no less than the head-on collision of two high-speed supersonic aircraft. The destructive power can not be described in words. The working environment of the turbine is very bad. Coupled with the toss of gasification fuel with solid particles, no good turbine can withstand it.

Because of this, GE and other giants will not only spend a lot of money on coal chemical industry, but even if they do it, no one will buy it.

After all, oil and natural gas are already so cheap, and the supporting industrial gas turbine is so mature, who has to use coal?

In contrast, it is better to keep the basic dish and make the cake of industrial gas turbine for oil and natural gas well than anything else.

Cao Jiefang thought the same before liberation. That's the mainstream of foreign countries. The domestic technology is far worse than that of foreign countries. Who else can we refer to if we don't refer to foreign countries? So a few years ago, Li Tong and others came to him and said that they wanted to build an industrial gas turbine for coal. Cao Jiefang, like Cai Weiguo and other people in energy departments, thought it was a whim, an industrial gas turbine for oil and natural gas The gas turbine is good enough. What are you doing with those moths?So he declined politely. After that, he didn't hear anything. Cao Jiefang thought it was the same as other whimsical things, and finally it was over.

But today, a few years later, the new d-40t of Tengfei group has achieved success in this respect.

The pre turbine temperature of 1250 ℃ directly increases the proportion of hot sales of d-40t industrial gas turbines to 45%. With the combination of steam and gas turbines, it is 10% ~ 15% higher than that of industrial gas turbine thermal power plants using oil and natural gas as fuel.

Of course, what is more important is that the d-40t industrial gas turbine solves the damage problem of fixed particles to the equipment, which greatly increases the service life of d-40t and further reduces the use cost.

Not much, this one is enough to make the domestic coal production provinces flocking.

What's more, it is said that Tengfei group can also use d-40t industrial gas turbine as the core to produce synthetic ammonia and other chemical raw materials from coal, which not only reduces the cost again, but also gives greater enthusiasm to coal provinces.

It's not changing the energy landscape. What is it?

……

Cao Jiefang, who was aware of this, was shocked beyond measure. However, if he was listening to Zhuang Jianye and Li Tong eating and chatting at the home of Mr. Li Tong in the capital at the moment, he would not be shocked beyond measure. Instead, the whole person might be directly petrified. Cao Jiefang's consciousness was too one-sided. The d-40t industrial gas turbine was only for the purpose of entering the coal field To generate electricity, to make synthetic ammonia? Changing the energy landscape?

That's too much to belittle the value of d-40t industrial gas turbine. No, Zhuang Jianye flattered Li Tong by holding a chopstick of bamboo shoots to stir fry bacon. At the same time, he said something heroic: "next, we are going to continue research and development on the basis of d-40t industrial gas turbine, and strive to use coal to develop most of the chemical raw materials and part of aviation products in five to ten years In addition, we should further reduce the cost of coal deep processing, gradually improve various processes, and formulate industrial gas turbine standards that are in line with our national conditions. "