Energy conservation and consumption reduction efforts
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Dear sea friends, please discuss the efforts made by various companies in energy conservation and consumption reduction, and learn from one another
1. The system operates stably, with the methane content in the output gas being ≤0.5%; the hydrogen-to-carbon ratio should be as close as possible to 2.05–2.15; the temperature of the synthesized water after cooling is <35°C; and the yield of methanol, including that obtained through distillation, should be increased. 2. Eliminate leaks and spills. 3. The synthesized purge gas can be reused, for example, as a feed gas in heating furnaces. It is also possible to add a separation system after the vent gas is released, to separate the hydrogen from this gas and send it back to the compression inlet, while the other components are sent to the heating furnace as feed gas. 4. Regularly carry out technological innovation and encourage progress in science and technology.
Reply to 2# guojing9113: I would like to ask whether setting the cooling water temperature so low is a waste of resources. A temperature of 37–40°C is what meets the process requirements and also helps save energy. The best way to save energy is to adopt new processes, such as changing from a 2-tower to a 3-tower distillation system. Another approach is to control the amount of gas used, thereby reducing unnecessary losses such as leaks, spills, and venting, and ensuring stable operation of the system with minimal fluctuations. Additionally, the use of steam and cooling water should be minimized as much as possible while still maintaining the proper operation of the system. Good lubrication, along with effective cooling and heating, are fundamental requirements for any process
Reply to 2# guojing9113: Is it your exhaust gas combustion furnace? How to control the air volume, since the amount of vented gas is unstable? Sending a combustion furnace – is the by-product steam?
No, after releasing the gas, we installed a device for producing natural gas, and we have been producing natural gas. Flue gas --- Membrane separation --- Transformation --- Decarburization --- Membrane separation ---- Natural gas
Reply to 5# guojing9113: Is there any system that uses vented gas to generate steam as a by-product in the combustion furnace? Also, what is your gas emission volume, and is natural gas produced? Isn’t natural gas mainly methane? How much methane is in this?
Our purge gas has never supplied steam as a by-product to the furnace. But our vented gas has many uses. During natural gas maintenance, it can be used as fuel gas in the heater or as feed gas at the purification inlet. The main component of natural gas is methane. When CH4 + CNHM is greater than 92%, the vent gas volume is around 45,000, with a methane content of 30–35%.
Reply to 1# lbd11_160: Reducing energy consumption and minimizing costs to maximize the company’s profits is also our company’s goal for next year. Since our company deals with inorganic chemical reactions, the yield is already extremely close to the theoretical value; therefore, efforts must be focused on saving energy and reducing consumption. If energy conservation and reduced consumption are to be achieved, considering yield is one aspect; optimizing the process addresses the problem at its source. Furthermore, it is necessary to harness the sense of responsibility and enthusiasm of company employees. As those working on the front line, they are more likely to come up with various practical suggestions to solve real problems. Of course, appropriate rewards should be given, as great rewards inspire courage and motivation. As for the specific aspects, each company has its own strengths and different approaches, but I believe that as the company grows, the employees will also benefit from that growth!
Personally, I feel that a lot of waste heat in methanol production isn’t being recovered properly~ The synthesis compressors here use back-pressure type ones! There is still excess low-pressure steam generated; apart from what is used, a lot of it is vented. Adding a few more small steam turbines can save a significant amount
Reducing costs by using the heat from heat exchangers for heating dormitories in winter
This topic is too broad to discuss; I hope we can narrow it down.