Tank for Fermentation Process in Brewing and Food Industry

• Warranty: 5 Years
• Condition: New
• Automation: Automatic
• Screw: 0
• Treatment: Biological Treatment
• Anticorrosive: Yes
• Model NO.: 1000-10000m3
• Colour: Self Determined
• Position: Outdoor
• Transport Package: Container
• Specification: 1000-10000m3
• Trademark: Fairyland
• Origin: China
• HS Code: 7204210000
• Production Capacity: 1000 Per Year

Product Description

1.1 Technology introduction

When organic waste is biodegraded inside an anaerobic digester, methane-rich biogas and a stabilized digestate are produced. Many organic materials can be used as a feedstock for AD processes. Multiple organic materials can be combined in one digester, a practice called co-digestion. Co-digested materials include manure; food waste (i.e., processing, distribution and consumer generated materials); energy crops; crop residues; and fats, oils, and greases (FOG) from restaurant grease traps, and many other sources. Each organic material has individual chemical and physical properties that impact the digestibility of the material, biogas production, and biogas quality (methane content).
The biogas is discharged from the top of the tank for collection, and the fermented residue flows into the digestion liquid temporary storage system through the bottom discharge port. The fermentation tank is equipped with an external sleeve heat exchanger that circulates and heats the materials to ensure that the digestion temperature inside the tank remains stable. Use a cooling tower to cool the materials. The anaerobic digestion system also takes into account the control of high temperatures during extreme summer temperatures.

2.2Product Outstanding

• High pipeline utilization rate: no long-term idle pipelines, avoiding pipeline sedimentation; Consider pipelines, pumps, etc. as backup functions for each other
• Top central stirring: Top central stirrer, 316L stainless steel in the gas phase zone and 304 stainless steel in the liquid phase zone; Multi layer blade, agitator can achieve online maintenance
• Variable frequency control of the mixer, adjusting the speed and direction of rotation according to the operating conditions;
• Design for removing floating slag: The special mixer for breaking floating slag and the discharge device at the top of the tank can effectively solve the problem of floating slag accumulation inside the tank
• Sand discharge design: The flow field design, discharge port position, and discharge method can effectively remove sand and gravel inside the tank, and the tank can operate normally for 10 years without the need for tank cleaning
• Multi level overvoltage protection: pressure sensing, high and low pressure protectors, tank top protection plate pressure relief protection, etc
• High heat exchange efficiency: The stainless steel casing outside the tank is used for heat exchange, and the slurry circulation inside the tank is used for heat exchange. The temperature rise and fall are controlled in two phases, and the daily control accuracy can reach ± 1 ºC
• The whole fermentation process is checked and monitored by the variables feed and discharge flows, pH-value, temperature and levels.Implement automatic control
• Easy to start and debug, stable to operate, and resistant to impact loads
• 

  
                       Flow field at the upper end of the agitator                                                       Float discharge device
  

  
  
                             No scum removal device                                                      Use scum removal device
•  
  

  
  
                        Flow field at the lower end of the agitator                               Bottom sand removal device
  1.3 Process parameters (kitchen waste)
  According to the properties of the incoming materials, it can be divided into aqueous phase anaerobic and full material anaerobic.
  Aqueous phase anaerobic: TS:5-8%  VS portion :90-95%  Viscosity>500mPaS
  Full material anaerobic: TS:10-16%  VS in TS:80-85%  Viscosity>2500mPaS
  

  
  
                                         All material slurry                                                                   Aqueous phase slurry 
• Process parameters of Anaerobic System

  No.	Indicator	Unit	Value
  1	Inputs	t/d	100~1000t/d
  2	Temperature	ºC	37±2
  3	Retention time	d	25~30
  4	Organic load	kg VS/m^3·d	>3.0
  5	Eta_VS	%	≥75
  6	Biogas yield related to VS	m^3/t	≥650
  7	Methane content	%	≥55
  8	Specific power consumption	W/m^3	≤10
  9	Operating time	--	365d,24h/d

  1.4 Patent

• No.	Patent	Type	Name
  1	ZL202322221597.X	Utility Model	An anaerobic fermentation device using ethanol as an intermediate product of kitchen waste.
  2	ZL202121981736.3	Utility Model	fermentation tank breaking scum stirring device
  3	ZL202322374906.7	Utility Model	A high-efficiency biogas production device for two-phase anaerobic digestion of kitchen waste
  4	ZL201210369718.9	Invention Patent	A pretreatment technology for anaerobic fermentation of kitchen waste
  5	ZL201210375095.6	Invention Patent	A two-phase anaerobic fermentation method for kitchen waste
  6	ZL202230652005.8	Design patent	fermentation tank Scum remover
  9	2021219817363	Utility Model	fermentation tank breaking scum stirring device
  10	2021215550832	Utility Model	Online sand cleaning expansion pipe device for tank body

  1.5 Fermentation Tank
• Under appropriate conditions such as temperature and pH, the slurry is degraded by methane bacteria and ultimately converted into biogas.
• The materials and structural forms of fermentation tanks mainly include Schumann tanks, Lipp tanks, enamel assembled tanks, and carbon steel welded anti-corrosion tanks. The characteristics of each material tank body are as follows:

  	Schumann Tank	LIPP Tank	Glass Coating Tank	Carbon Steel WeldingTank
  Country of origin	Germany/China	China	China	China
  Operating volume	up to 10000m^3	up to 3000m^3	up to 10000m^3	up to 10000m3
  Material	Gas zone is 316L with 1.5mm  AD zone is SS355 with Powder or Paint anti-corrosion protection	Gas zone and AD zone is SS304 anti-corrosion	Gas zone and AD zone is glass coating anti-corrosion protection Coating thickness:≥ 0.2mm double-sided coating	Gas zone and AD zone is paint anti-corrosion protection
  Wall panel thickness(mm)	3~12	2~4	3~12	5~20
  Anti corrosion lifespan(y)	20~30	20~25	10~15	5~10
  Limitation	Single source	Max. thickness of tank wall up to 4cm (bending)  Sealant  Small Volume  Installation quality hard control	Max. thickness of tank wall up to 16cm ( coating falling off) Paint peeling The contact between the enamel layer and the steel plate layer is prone to paint peeling and rusting	Gas Zone corrosion problem Not possible for online leakage Repair No proposal for bottom  Experienced worker needed for Installation
  Construction difficulty	Just need simple training	Professional equipment and personnel	Professional equipment and personnel	The welding level should be high
  Applicable pH Range	3~14	3~14	Standard coating:3~9 special coating:1~14	6~9

  The liquid phase area adopts carbon steel anti-corrosion, while the gas phase area and gas-liquid interface area adopt 316L. The mature modular installation gives Schumann assembled tanks significant advantages in cost and construction period, making them the preferred choice for large fermentation tanks.
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