Biomass Pyrolysis System Equipment
Principles/Preprocessing/System advantages/Control logic/Big Data Management
Principle Of Pyrolysis
According to the needs of users can be designed multi-generation system, combined heat and power (CHP) or hot and cold multi-generation (CCHP).
Due to different raw material characteristics, a good pretreatment system has a great impact.
Biomass Pretreatment Solutions
Based on larger irregular timber, required "Crushing + shredding two processes" to ensure uniform material size.
The crushed material goes into the rotary screen,The dirt and ash are separated and then transferred to the bin.
For straw and rice straw materials, according to the flow and bulk density offers differen.
Wheat straw, rice straw, EFB palm fiber need to be shredded screened, dried and then make pellets.
Rice husk, cotton stalk, due to good fluidity, can be used directly.
Nut shells are generally factory waste and do not need to be crushed.
Configure drying equipment according to different material moisture.
Bamboo contains more fiber, the general treatment method uses two stages Crushing treatment.
First crushing and then shredding process.
HaiQi’s Strength In Biomass Pyrolysis System
Simple maintenance and easy to operate. Wearing parts can be quickly replaced. Various body material choices which can adapt to different working condition, heat resistant and corrosion resistant requirement.
For example: the heated part is made of stainless steel 310S and MA253 materials, and the wear-resistant part is made of imported HARDOX wear resistant materials. The corrosion-resistant part is made of stainless steel 321 to ensure the stable and continuous working condition of the system.
HaiQi use high quality motor like SEW or Siemens to ensure stable operating conditions of industrial systems. Systems are designed to comply with EU or ASME standards.
EU/ASME compliance on system connection pipeline, gas pipeline, water pipeline, gas pipeline, Flanged link piping.
In the flue gas treatment part, HaiQi adopts dry flue gas dust removal method, and adopts high temperature bag dust collector/ESP electrostatic dust collector for different working conditions.
Different dust removal systems are configured according to local emission standards for dust content in flue gas, PM10,PM2.5 and local electrical directives.
Energy production parts such as boilers comply with ASME standards.
Pressure vessels such as: gas compressor tank, superheated/saturated steam drum,EU/ASME standards are usually applied.
Safety Standards For Biomass Combustion Systems
Haiqi has rich project field experience in the field of biomass gasification combustion heating, which can effectively help users avoid risks.
Haiqi has designed 6 safety two-way pneumatic valves and backup safety valves in the combustible gas pipe, which can automatically switch the gas to the outdoor discharge torch for burning in the case of power failure.The multi-point CO early warning system is designed in the plant.Once the CO device alarm is operated on site, the risk of gas leakage in the combustible connecting pipeline can be predicted and avoided.
Biomass gas is composed of CH4,CO,H2,CO2,O2 and other alkane number gases, and the volatile gas contains a lot of dust pyrolysis oil and acidic water (wood vinegar).Very test the operating conditions of the burner, in the design can avoid the problem of dust in the gas and tar plugging pipe.
NOX after biomass gas combustion belongs to raw NOX, which has relatively complex characteristics, and the content gap of each material is large, so it will be based on the project in the early design stage of the system.Conduct different tests according to local emission standards, and design the back end of the system according to the test solution to ensure the safe and stable operation of the project.
System Control Logic
Haiqi control system configuration logic, the system uses DCS intelligent control, multi-point signal acquisition.
Preprocessing System
Drying System
Pyrolysis System
Combustion System
Gas Steam Boiler
Economizer
Flue Gas Treatment
Explosion Proof Safety
Waste Heat Power Generation
Preprocessing System
1. The system adopts multi-point control, pre-treatment crushing will produce a lot of dust and noise in the productionprocess. Design in the crushing link. Noise reduction room and negative pressure dust removal measures. Due to the highenergy consumption of the crusher, the instantaneous starting current is larger, and the current and voltage as well astheequipment operating temperature. Realtime monitoring, System such as the normal operation ofthe card machine or otherfaults can also be displayed in the DCs alarm emergency stop. Allthe preprocessing in the system .The equipment conditionsare displayed in the DCs, and the problems that will occur can be predicted according to the data.
2. The pre-treated material is sent to the bin through the conveying device. The storage bin designed by Haigi can store theamount for5-6 hours, and the material can be stored according to the materiallevel. The sensor automatically stops thefront-end preprocessing operation, and the preprocessing systemlautomatically starts when the materiallevel falls below thelow material level.
Drying System
1. Before the pre-treated biomass is sent to the dryer through the conveying device, HaiQi Dcs system will send the material to the dryer according to the startup temperature of the system.T he dryer. Dryer thermal pipe design temperature and pressure difference sensor and temperature sensing automatic electromagnetic valve, according to the residual heat temperature of high and low temperature sense. The automatic solenoid valve opens automatically to prevent the risk of fire in the high temperature dryer.
2. The temperature regulating valve can automatically adjust the size according to the demand of raw materials. in case of emergency power failure, the valve will be fully opened to avoid the occurrence of fire.
Pyrolysis System
1. The dried material enters the pyrolysis system through the wind shelter valve, and enters the system. The DCS of Haiqi will follow the temperature of the system segment. Pressure, adjust the feeding amount of the system and the residence time of the material to confirm the safe and stable operation of the system.
2. The back-end of the pyrolysis system is equipped with pressure relief valve and explosion-proof water seal, which can effectively inhibit the emergency power failure and the shutdown under special conditions.
Combustion System
1. The combustible gas after the operation of the pyrolysis system is transported to the burner through the gas pipeline, and passes through the 6-level two-way safety valve (natural gas standard) before the burner. Emergency closure in the case of power failure within 1-1.2s, the gas will be switched to the safety release torch. Where you can monitor the flow of gas, the velocity,Temperature, and pressure difference. Proceed to the next step based on the system running data.
2. Low nitrogen combustion system, through the control of combustion temperature can inhibit NOX generation, HaiQi real-time detection of combustion temperature and pressure. The stability of operation can be judged by observing the pressure difference and temperature.
Gas Steam Boiler
If the actual user needs energy, HaiQi can be configured with gas steam boiler, combustible gas through the burner to the high temperature section1300-1500 Heat transfer in the gas steam boiler, can effectively use the heat of the high temperature section. HaiQi designs special biomass gas-fired boilers. Wood tar and wood vinegar in gas can be effectively converted into physical and chemical combustion heat.
DCS can detect the gas production condition, pressure and temperature of the boiler in real time.
Economizer
The tail of the boiler is installed, and the flue gas and another heat exchange medium are exchanged in the flue gas during heat exchange, After the low temperature medium absorbs a lot of heat energy,it is returned to the boiler again, which is equivalent to the secondary utilization of waste heat, thereby improving the performance of steam equipment and reducing energy consumption.
Flue Gas Treatment
HaiQi allocates suitable dry dust collector according to the actual emission requirements of the project site. Generally. cloth bag dust removal is adopted. Temperature and humidity have greater requirements, HaiQi designed a temperature sensing automatic valve in the bag dust pipe, which can be based on the temperature and humidity of the tail gas. Open the adjustment to prevent high/low temperature exhaust gas into the bag dust caused by failure.2. The fault of the general dust collector is caused by the delay in judging the exhaust gas temperature. HaiQi strictly controls the temperature, pressure and humidity of the exhaust gas in real time to avoid. Hidden danger of safe operation due to inaccurate human monitoring.
Explosion Proof Safety
At the beginning of the system design, the earliest consideration is the safety of the system operation. The pyrolysis system is a single-channel rotary kiln with large volume, more biomass materials and combustible gases during operation, which has a huge risk of inflammable and explosive and CO poisoning for operators.
In the generation section of biomass gas, HaiQi began to adopt multi-point monitoring, pressure relief monitoring of combustible gas, emergency exhaust detection and control of combustible gas, concentration alarm of combustible gas.emergency closure monitoring of combustible gas after power failure, etc.
Waste Heat Power Generation
HaiQi configures different CHP and CCHP multigeneration systems according to user requirements, Steam turbine and ORC can be configured according to user requirements, or steam and green electricity services can be provided according to the needs of thermal power production enterprises, Steam turbines are selected according to user requirements.
Big Data Security Management Center
Work together, strategy for the future, cooperation to create unlimited possibilities.
LCA Data Collection System
According to the needs of users, Haiqi can provide the whole life service of the project, from the cradle to the door of the whole life cycle measurement service.
One-stop software and hardware services, front end:carbon footprint ofraw material collection process,carbon footprint ofraw material processing, carbonfootprint ofcracking equipment manufacturing,carbon footprint of biochar production process,carbon footprint of biochar packaging, carbonfootprint of biochartransportation, etc.
Pyrolysis Plant Energy Consumption Management System
HaiQi data management system, the pyrolysis plant, hydropower, energy, consumables, as well as biomass raw materials, biomass carbon,biomass by-products, data summary, users can real-time detection of production costs according to the report.The 5G cloud can synchronize mobile and PC terminals.
Carbon Assets Management System
The carbon closed-loop management system independently developed by HaiQi can calculate the CO2 decarbonization amount in real time according to the biochar produced by the cracking plant and automatically generate are port delivery platform.
Carbon Dioxide Emission Real-time Detection System
The HaiQi CO2 detection system can monitor the CO2 emission data of the system in real time, and can easily calculate the CO2 verification amount according to the real-time monitoring data.
Cloud Data Management System
According to the data reports of the Internet of things module and big data cloud computing system, HaiQi transmits the data to the cloud data management system in real time to ensure the data security and data retrieval of the pyrolysis plant.
5G Remote Informatization Management Center
According to the data reports of the Internet of things module and big data cloud computing system, HaiQi transmits the data to the cloud data management system in real time to ensure the data security and data retrieval of the pyrolysis plant.
 
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