Biomass gasification to obtain biogas
Steam contribution for a pilot plant for biomass gasification
Gasification makes it possible to produce both green hydrogen and carbon-neutral alternative fuels, such as biochar or synthetic gas.
Challenges posed by the client:
Contribution of steam as a gasifying agent for a flexible gasifier installed in a technological laboratory. The biomass gasification is a complex process that requires fully controlled conditions.
The objective is to generate syngas from organic waste or biomass surplus to decarbonize your company and give added value to this material.
- Approximately 12kg/hour of saturated steam in a boiler made of AISI A-304 stainless steel.
- 1 to 5 bar pressure control system
- Water softening equipment
- Integration of parameters in your control systems
Customized steam solution developed by Giconmes.
For its integration in the gasification unit, our model NGV1610 has been installed, equipped with a pressure reduction system and adaptations in the regulation and control elements that allow it to modulate its parameters according to the needs of the process.
The gasification of matter is a complex process that requires fully controlled and stable conditions. Its development requires the choice of a gasifying agent which, together with the contribution of heat, will facilitate the change from the initial solid state of a material to the gaseous state. This resulting gas, which can generally be considered acceptable in terms of calorific value, can be particularly rich in hydrogen if the gasifying agent used is water vapor.
Taking biomass as a reference base material, the resulting gas is composed of H2, CO, CO2 and CH4. The concentration of H2 present in the mixture can range from 9% to 50% depending on whether the gasifying fluid used is air or water vapor, respectively. Thus, water vapor is key in these processes because of the extra molecular hydrogen it contributes to the resulting gaseous mixture.
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We understand that many questions may arise. Here are some of the most common ones.
There are no emissions beyond those produced during the electricity production process. Consequently, emissions can be neutral depending on the electricity mix. Electric steam boilers are the present and the future.
Absolutely. In fact, it is recommended to achieve maximum efficiency. There is no problem with remote control as long as it complies with current regulations.
A steam generator is a pressure vessel that, together with the piping network, is subject to regulatory control and complementary technical instructions, according to the regulations published in Royal Decree 809/2021, of September 21. Maintenance is divided into a part that can be easily fulfilled by the owner:
- Know and apply the manufacturer’s instructions regarding use, safety measures, and maintenance.
- Not to put the installation into service or prevent the operation of pressure equipment if the requirements of the Regulation are not met.
- Having at least the following documentation for the pressure equipment while they are installed: Declaration of conformity, manufacturer’s instructions (if applicable), and, if necessary, installation certificate, along with other supporting documentation (such as installation project, record of the last periodic inspection, certifications of equipment repairs or modifications, and any other documentation required by the relevant technical instruction complementary to this regulation). For detailed contents, refer to Annex IV of the regulation. Making this documentation available to the competent authority of the autonomous community and the companies responsible for maintenance, repair, or periodic inspections.
- Use the pressure equipment within its intended operating limits as specified by the manufacturer and take it out of service if it no longer meets the necessary safety requirements.
- Perform maintenance on the installations, pressure equipment, safety accessories, and control devices in accordance with the operating conditions and manufacturer’s instructions, and examine them at least once a year.
- Arranging for the necessary periodic inspections as required by Article 6 of the regulation.
- Having and maintaining an up-to-date record of pressure equipment categories I to IV, as defined in RD 709/2015, of July 24, or equipment similar to these categories according to Article 3.2 of the regulation, as well as their installations.
It is known that by applying heat to water, it transforms into steam at the boiling point and atmospheric pressure. From there, depending on the required saturation degree of steam for its proper application, we need to increase the pressure to obtain a higher temperature. To change the temperature and saturation degree of steam, we always need to modify the pressure.
It is a unit of pressure equivalent to 1 kg/cm2, 0.98 atmospheres, or 14.50 PSI.
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