Title of Invention

A PROCESS FOR THE PRODUCTION OF ELECTRICAL POWER FROM POULTRY LITTER

Abstract

This invention relates to an improved method of producing methane gas and organic manure from raw materials for use as operating fluid of an engine generating electric power comprising the steps of processing and converting the organic manure to sludge, pressure inducing said sludge into a designed digester for agita¬tion with microbial consortium and additives, recycling the treated effluent for uniform stabilisation in said digester, separating the produced methane from the digested sludge and removing methane from the digester, purifying and compressing said removed methane for storage in a gas holder, characterised in that said raw material comprises poultry litter processed at ambient temperature, said sludge is induced at the bottom of said digester having partial partition wall installed below the ground level thereby producing said methane by vertical agitation wherein said engine is modified to operate 100% with methane.

Full Text

FIELD OF THE INVENTION This invention relates to a process for the production of electrical power from poultry litter and the bio-methanation reactor for carrying out the process. BRIEF DESCRIPTION OF THE INVENTION According to this invention is provided an improved method of producing methane gas and organic manure from raw materials for generating electric power comprising the steps of! processing and converting the organic manure to sludge, pressure inducing said sludge into a digester for agitation with microbial consortium and additives, recycling the treated effluent for uniform stabilisation in said digester, separating the produced methane from the digested sludge and removing methane from the digester, purifying and compressing said removed methane for storage in a gas holder, characterised in that said raw material comprises poultry litter processed at ambient temperature, said sluge is induced at the bottom of said digester having partial partition wall installed below the ground level thereby producing said methane by vertical agitation. In accordance with this invention, poultry litter in the form of, for eg. solid waste is subjected to rasping and sieving and is subsequently converted into sludge by mixing with water. A consortium of microbes and additives are added and the mass is fed into a digester and agitated to produce methane. The methane is purified to remove moisture and other gases and stored and fed to engines for power production. The proportion of poultry litter and water varies from 100:150 to 100:200% w/w. The microbial consortium consists of cellulolytic culture of fungi which is added in a proportion of 0.01 to 0.02*/. w/w. The raw material is processed at ambient temperature before feeding into the digester. The temperature in the digester varies o o between 50 and 80 C, preferably between 59 to 75 C. The pressure in the digester is maintained upto 50 psi, preferably in the range of 20 to 30 psi and the pH is in the range of 7.2 to 7.8. The retention time is from about 30 to 40 days. The mass is agitated in the digester at a frequency of about 4 to 8 times/day based on the reactor size. The microbial consortium used comprises cellulolytic culture of fungi in the range of 0.01 to 0.03%, and said additives used comprise sugarcane trash and vegetable waste in the range of 0.08 to 0.40%.. Petrol engines in various capacities can be run successfully by 100%. methane gas with modified air and gas composition ratio. This has been achieved by certain modifications in the carburetor to be suitable for the utilization of 100% methane gas. No changes or modifications are required in the existing diesel and petrol engines. The methane is produced through anaerobic reactor and it is used to run the diesel and petrol engines, motors, etc. to generate power. A bio-methanation is activated through « consortium of bacteria and fungi with enzyme block mechanisms. In accordance with an embodiment of this invention is provided a system for production of the biogas. The converted sludge is fed into a bio-methanation system for vertical agitation to produce bio-gas. The produced bio-gas is cleaned in the gas purifier provided with the system for removal of moisture and H S. The cleaned gas after compression through an assigned air-compressor is stored into a gas holder for subsequent feeding to a modified engine of a generator producing electricity. The bio-methanation system designed as a process and pressure induced vertically agitated load dependency energy system (PAVEL SYSTEM-I) basically comprises a two-way system wherein vertical agitation of the induced sludge is carried out at the bottom of the digester unit of the system provided with a partition wall. The produced methane gas is passed through a gas purifier unit installed outside the digester unit whereafter purification of the produced gas is processed through a compressor unit. The compressed gas is then stored in a gas holder unit for subsequent transmission to an engine of a generator. A feed-mixing unit of the system is provided at the ground level where said sludge is produced by processing the raw material through removal of impurities in a filter process and then subjecting the filtered waste to rasping, grinding and sieving. The system i© inter¬connected through a tubular network, a power driven feed pump, an outlet pumping means and a plurality of regulating means designed as valve means. In a further devleopment in accordance with the invention, there is provided a PAVEL SYSTEM~II which basically comprises a four-way multipurpose system provided with four number regulating means serving the purpose of feeding, re-rasping, mixing and release of spent sludge from the digester. The invention is explained in more detail below in conjunction with the exemplary embodiments with reference to the accompanying figures, of which s FiQ.l shows a flow diagram of the first embodiment of a bio-methanation system (PAVEL SYSTEM-I) according to the invention; Fig.2 shows a flow diagram of the second embodiment of a bio-methanation system (PAVEL-SYSTEM-II> according to the invention. Fig.l illustrates a process and pressure induced vertically agitated load dependency energy system (PAVEL SYSTEM-I) according to the invention in the form of a flow diagram. The feed mixing tank. (FMT) is installed at the ground level where raw material is processed at ambient temperature and the produced sludge is induced through bottom partial opening (BPO) of the agitator installed below the ground level. The agitation with microbial consortium takes place within the partial partition wall (PPW) and the sludge is pressure-induced by a first pump (P) through a first omni-directional tubular network regulated by a pair of valve means (V). The produced methane gas is recycled through a second omni-directional tubular network by a second pump (P) regulated by a third valve means (V). The produced gas is stored in a gas holder (6H). The produced sludge is removed through the outlet pumping (OLP) to separate the water in the effluent. The remaining solid sludge is sent to the manure preparation bed. Fig.2 illustrates the PAVEL SYSTEM-II comprising isolated units for feed-mixing tank) agitator, gas purifier, compressor, gas holder and generator, all of such units are inter-connected by a tubular network provided with pumping means and regulating means. The system is provided with four-way regulating means for recycling of produced methane. I CLAIMS 1. An improved method of producing methane gas and organic manure raw materials for generating electric power comprising the steps of! processing and converting the organic manure to sludge, pressure inducing said sludge into a digester for agitation with microbial consortium and additives, recycling the treated effluent for uniform stabilisation in said digester, separating the produced methane from the digested sludge and removing methane from the digester, purifying and compressing said removed methane for storage in a gas holder, characterized in that said raw material comprises poultry litter processed at ambient temperature, said sludge is induced at the bottom of said digester having partial partition wall installed below the ground level thereby producing said methane by vertical agitation. 2. The method as claimed in claim 1 wherein said raw material is mixed with water in a proportion 100-200% (w/w). 3. The method as claimed in claim 1 wherein processing raw material comprising the steps of removing the impurities in the filter process and then subjecting said filtered waste to rasping, grinding and sieving through 50-200 BSS. 4. The method as claimed in claim 1 wherein said sludge is induced through an omni-directional tube connection interposed between said digester and a feed mixing tank installed at ground leve1. 5. The method as claimed in claim 1 wherein said sludge is intro¬ duced into said digester from said feed mixing tank by induced pressure developed through a power-driven feed pump and load dependency is regulated by twin valves installed in between said omni-directional tube connection. 6. The method as claimed in claim 1 wherein the temperature in said digester is maintained between 50 to 80 C, preferably between 59 and 75 C. 7. The method as claimed in claim 1 wherein the internal pressure is upto 50 psi, preferably between 20 and 30 psi. 8. The method as claimed in claim 1 wherein the pH in said digester is between 7.2 and 7.8. 9. The method as claimed in claim 1 wherein said sludge is agitated in said digester at a frequency of about 4 to 8 times per day based on the digester size. 10. The method as claimed in claim 1 wherein the retention time of the mass in said digester ranging between 30 to 40 days. 11. The method as claimed in claim 1 wherein said microbial consortium used comprises cellulolytic culture of fungi in the range of 0.01 to 0.03%., andsaid additives used comprise sugarcane trash and vegetable waste in the range of 0.08 to 0.40%. 12. The method as claimed in claim 1 wherein said methane removed from said digester is cleaned to remove moisture and H S by passing through a series of vertically arranged gas purifiers installed above ground level and said cleaned methane is further compressed by using a compressor installed below said gas purifiers before storing in gas holder for feeding into said modified engine generating electric power. 13. The method as claimed in claim 1 wherein said digester is having an outlet pumping means installed at ground level connected to a tubular network with a regulating means for removal of said digested sludge to said manure preparation bed. 14. The method as claimed in claim 1 wherein said partial parti¬ tion wall has a height of 25 to 40%. of the height of said digester to maximise methane production. 15. The method as claimed in claim 1 wherin said partial partition wall is further provided with a bottom partial opening for removing said digested sludge through said tubular network.

Documents:

0934-mas-2001 abstract.pdf

0934-mas-2001 claims-duplicate.pdf

0934-mas-2001 claims.pdf

0934-mas-2001 correspondence-others.pdf

0934-mas-2001 correspondence-po.pdf

0934-mas-2001 description (complete)-duplicate.pdf

0934-mas-2001 description (complete).pdf

0934-mas-2001 drawings-duplicate.pdf

0934-mas-2001 drawings.pdf

0934-mas-2001 form-1.pdf

0934-mas-2001 form-19.pdf

0934-mas-2001 form-3.pdf

0934-mas-2001 form-4.pdf

0934-mas-2001 form-5.pdf

0934-mas-2001 others.pdf