Request for detailed heating-up procedures for a newly commissioned natural gas hydrogen production plant.

The heating step in the natural gas-based hydrogen production process typically includes the following stages: 1. Preheating stage: Before the plant starts operating, it is necessary to preheat the equipment first, raising its internal temperature to an appropriate operating level. This can be achieved by using a burner or an electric heater for heating. 2. Heating stage: After the equipment reaches the preheating temperature, natural gas needs to be fed into the reactor for heating. A burner or heater is typically used to provide a heat source, heating the natural gas to a certain temperature so that it reaches a level suitable for catalyst reactions. 3. Smooth heating: During the heating phase, it is necessary to control the heating rate of natural gas to prevent uneven reactions or poor results caused by heating too quickly or too slowly. The heating rate can be determined based on specific process requirements and equipment performance. 4. Catalyst temperature equilibrium: Once the natural gas reaches the target temperature, it is necessary to maintain that temperature for a certain period of time to achieve catalyst temperature equilibrium. This ensures that the catalyst reacts at an appropriate temperature, thereby improving reaction efficiency and the quality of the hydrogen produced. It should be noted that the specific heating steps will vary depending on the process requirements and equipment design of different natural gas hydrogen production facilities. In practical operation, it is necessary to follow the equipment’s instructions and operation manuals, and to adhere strictly to the relevant safety regulations. At the same time, to ensure operational safety, please have professionals perform or supervise the operations. .

Following the nickel-based catalyst heating rate specified by the catalyst plant, the nitrogen circulation process is established by following the prescribed procedure. The furnace top burners are ignited, producing multiple small flames. Based on the rate of temperature rise, the number of burners is increased until the temperature exceeds the steam dew point. At this point, steam is introduced to further raise the temperature. Once the temperature reaches over 650°C, natural gas is fed in to directly react with the steam, thereby generating hydrogen that reduces the catalyst

During the heating process, the conversion furnace and the medium-temperature shift reactor heat up simultaneously. What should be done if the medium-temperature shift reactor reaches the desired temperature first, while the conversion furnace has not yet reached it?

The medium-temperature shift converter is located after the reformer; in other words, the high-temperature nitrogen gas coming out of the reformer enters the medium-temperature shift converter. Clearly, only after the furnace temperature of the reformer rises can the temperature of the outgoing nitrogen gas be increased. The nitrogen gas then proceeds through the process to reach the medium-temperature shift converter

The reformer and the medium-temperature shift converter are heated up simultaneously. Presumably, the medium-temperature shift converter reaches the reduction temperature of around 400 degrees first, right? At that time, the converter had not yet reached a reduction temperature of over 700 degrees. What should be done at this point? Was the inlet of the medium-temperature shift reactor closed very tightly? Continue heating and reducing in the converter?

If there’s a secondary line, in case this situation you mentioned occurs, you can just send the signal through it; there’s no particular process needed

What do you mean by just throwing it out? Has the medium-frequency furnace been removed? Is the conversion furnace continuing to heat up? After reaching a certain temperature, does the converter merge with the medium conversion furnace to form a single gas stream?

By the way, if the sub-line fee isn’t paid, what should be done?