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Method and equipment for processing organic material

A technology for organic raw materials and equipment, applied in the field of processing organic raw materials, can solve the problems of extreme sensitivity to temperature changes, inability to store, high carbon dioxide content, and achieve the effects of reducing pH changes, facilitating storage and stabilizing the process.

Inactive Publication Date: 2005-08-17
PRESECO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Preservation of seasonally produced organic raw materials can also cause problems because they cannot be preserved in either acidic or alkaline conditions if traditional bioconversion methods are used due to their sensitivity to pH changes
Traditional biotransformation methods are also extremely sensitive to temperature changes
[0008] In addition, biogas produced by conventional methods has a high carbon dioxide content

Method used

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  • Method and equipment for processing organic material
  • Method and equipment for processing organic material
  • Method and equipment for processing organic material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Treatment of organic raw materials and generation of biogas

[0060] Into the reactor R1 with a capacity of 300 liters, the organic material and 20 liters of inoculum containing 18.8 kg of bone meal, 28.9 kg of fish and 3.8 kg of genetically manipulated yeast ( Genencor). The pressure in the reactor was 2 bar. The pH in the reactor was 8.2. Determination of total NH with a spectrophotometer 4 The content is 9200mg / l. In addition, the amount of carbonate was measured using sulfuric acid, from which the ammonium ion content was calculated as the amount of ammonium carbonate. The ammonium ion content was calculated to be 8700 mg / l and the carbonate content was 46300 mg / l. Alkalinity and phosphate content were also determined. The alkalinity is 32000 and the phosphate content is 1200mg / l. The quantity and composition of the biogas obtained from the reactor were measured. On the second day, the reactor produced 109.4 L / day of biogas containing 74.6% CH 4 and 20.0% C...

Embodiment 2

[0063] Treatment of organic raw materials and generation of biogas

[0064] Into a reactor R4 with a capacity of 250 liters, an organic material containing 6.2 kg of bone meal, 24.15 kg of fish and 3.92 kg of genetically manipulated yeast (Genencor ). The pressure in the reactor was 2 bar. The pH in the reactor was 8.0. Determination of total NH with a spectrophotometer 4 The content is 5800mg / l. In addition, the amount of carbonate was measured using sulfuric acid, from which the ammonium ion content was calculated as the amount of ammonium carbonate. The ammonium ion content was calculated to be 7400 mg / l and the carbonate content was 39400 mg / l. Alkalinity and phosphate content were also determined. The alkalinity is 21000 and the phosphate content is 1100mg / l. The quantity and composition of the biogas obtained from the reactor were measured. On the second day, the reactor produced 140 L / day of biogas containing 76.8% CH 4 and 17.4% CO 2 .

Embodiment 3

[0066] Validation of Buffering Properties of Organic Feedstock in Reactors Using Sulfuric Acid Addition

[0067] A 50 ml sample of organic feedstock was withdrawn from reactor R(4) during processing. To verify the buffering properties, the pH of the sample was measured, after which 1-% H 2 SO 4 . The pH of the sample was 7.6 before acid addition.

[0068] 1-%H 2 SO 4 Adding amount, ml

[0069] Distilled water has a pH of 7.6. Add 0.5 ml of 1-% H to 50 ml of distilled water 2 SO 4 , whereby its pH drops to 2.3. The buffering effect is thus clearly visible.

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Abstract

A method for processing organic material, in which method bioconversion is performed on the organic material in at least one first reactor, the biogas formed in the bioconversion is treated with ammonia in at least one second reactor and buffer solution produced in the second reactor is recycled to the bioconversion in the first reactor. Thus, the carbon dioxide of the mixed methane / carbon dioxide gas reacts with the ammonia and forms a buffer compound, such as ammonium bicarbonate and / or ammonium carbonate.

Description

technical field [0001] The invention relates to a method for processing organic raw materials and equipment using the method. Specifically, the method is a method for purifying biogas generated during degradation by using organic raw materials with high ammonia content. The invention also relates to the products obtained by this process. Background technique [0002] Publication US 4824571 discloses a method and apparatus for the degradation of various organic products and wastes in an anoxic medium. The process produces degradation products and biogas. In this method, the material to be degraded is introduced into a fermentation tank and the biogas produced is recovered. Biogas is then returned from the bottom into the pond to provide fluidization. [0003] Publication US 4302236 discloses the use of composting systems for scrubbing gaseous emissions. In this process, specifically, components that can form mineral acids are removed from a high sulfur gas stream. Inorga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05F1/00C05F17/00
CPCC12M21/04Y02E50/343C12M23/58C05F1/002Y10S210/903C05F17/00C12P5/023C12M47/18Y02P20/145Y02A40/20Y02E50/30Y02W30/40C05F3/00C05F11/00
Inventor 尤西·耶尔文蒂耶
Owner PRESECO
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