BE1025130B1 - METHOD FOR THE PRODUCTION OF GAS, LIQUID OR SOLVED ORGANIC CARBON COMPOUNDS THROUGH GAS FERMENTATION - Google Patents

Abstract

The invention relates to a process for the production of gaseous, liquid or dissolved organic carbon compounds via gas fermentation by microorganisms that are incubated on the surface of a carrier material (3) in a Trickling Filter (TF) reactor in which they are at the desired temperature and pressure and are sprayed at the top with process water (20), being a specific nutrient solution and injected at the bottom with a gas stream (7) of gas to be converted, the process water being recirculated in an external recirculation cycle and the gas optionally recirculated after passage through the reactor via an external recirculation cycle.

Description

(30) Priority data:

(73) Holder (s):

ORGANIC WASTE SYSTEMS, shortened O.W.S. public limited company 9000, GHENT

Belgium (72) Inventor (s):

SMIS Jan

9820 MERELBEKE

Belgium (54) PROCESS FOR THE PRODUCTION OF GASEOUS, LIQUID OR DISSOLVED ORGANIC CARBON COMPOUNDS THROUGH GAS FERMENTATION (57) The invention relates to a process for the production of gaseous, liquid or dissolved organic carbon compounds by gas fermentation by microorganisms inoculated on the surface of a carrier material (3) in a Trickling Filter (TF) reactor in which they are brought to the desired temperature and pressure and sprayed on top with process water (20), being a specific nutrient solution and injected at the bottom with a gas stream (7) of gas to be converted, whereby the process water is recirculated in an external recirculation cycle and optionally the gas is recirculated after passage through the reactor through an external recirculation cycle.

BELGIAN INVENTION PATENT

FPS Economy, K.M.O., Self-employed & Energy Publication number: 1025130 Filing number: BE2017 / 5250 Intellectual Property Office International Classification: C12P 7/06 C12P 7/40 C12M 1/16 C12M 1/00 Date of grant: 14/11/2018

The Minister of Economy,

Having regard to the Paris Convention of 20 March 1883 for the Protection of Industrial Property;

Having regard to the Law of March 28, 1984 on inventive patents, Article 22, for patent applications filed before September 22, 2014;

Having regard to Title 1 Invention Patents of Book XI of the Economic Law Code, Article XI.24, for patent applications filed from September 22, 2014;

Having regard to the Royal Decree of 2 December 1986 on the filing, granting and maintenance of inventive patents, Article 28;

Having regard to the application for an invention patent received by the Intellectual Property Office on 10/04/2017.

Whereas for patent applications that fall within the scope of Title 1, Book XI, of the Code of Economic Law (hereinafter WER), in accordance with Article XI.19, § 4, second paragraph, of the WER, the granted patent will be limited. to the patent claims for which the novelty search report was prepared, when the patent application is the subject of a novelty search report indicating a lack of unity of invention as referred to in paragraph 1, and when the applicant does not limit his filing and does not file a divisional application in accordance with the search report.

Decision:

Article 1

ORGANIC WASTE SYSTEMS, shortened O.W.S. public limited company, Dok Noord 5, 9000 GHENT Belgium;

represented by

VAN VARENBERG Patrick, Arenbergstraat 13, 2000, ANTWERP;

a Belgian invention patent with a term of 20 years, subject to payment of the annual fees as referred to in Article XI.48, § 1 of the Code of Economic Law, for: METHOD

FOR THE PRODUCTION OF GASEOUS, LIQUID OR DISSOLVED ORGANIC

CARBON COMPOUNDS THROUGH GAS FERMENTATION.

INVENTOR (S):

SMIS Jan, Meersstraat 6, 9820, MERELBEKE;

PRIORITY :

BREAKDOWN:

Split from basic application:

Filing date of the basic application:

Article 2. - This patent is granted without prior investigation into the patentability of the invention, without warranty of the merit of the invention, nor of the accuracy of its description and at the risk of the applicant (s).

Brussels, 14/11/2018,

With special authorization:

Process for the production of gaseous, liquid or dissolved organic carbon compounds via gas fermentation.

BE2017 / 5250

This invention relates to a process for the production of organic carbon compounds formed from gases by means of a biological fermentation process,

More particularly, the invention relates to gas fermentations or the biological conversion of waste gases by micro-organisms into products with an additive

value. It metabolism gas serves as a substrate for the micro-organisms. in front of it Of such gas fermentations dependent from the Handover of the gas of the gas phase to the liquid phase, but this transfer is complicated through

the limited solubility of most gases in water.

If the production of organic carbon compounds from a gas mixture is sought, the transfer of the gas to the liquid phase is usually achieved by conducting a wet fermentation, in a reactor (Continuously Stirred Tank Reactor).

In a CSTR type reactor, gas transfer is improved by injecting the gas into the liquid in the form of fine gas bubbles. Partitions and mechanical mixing also disperse the gas bubbles. The fine gas bubbles ensure a large

BE2017 / 5250 contact surface between the gas phase and the liquid phase. Conducting these gas fermentations under elevated pressure also improves gas transfer. The process in one

CSTR type reactor is very energy intensive.

Gas fermentations can result in a product in the gas phase or a product in the liquid phase. In a CSTR type reactor, the biomass is completely mixed with the products that are formed in solution. A drawback of these CSTR type reactors is therefore that they require a difficult separation of the biomass from the process liquid to separate and purify the formed products.

A second reactor type that allows gas transfer from the gas phase to the liquid phase is the TF reactor or Trickling Filter reactor, also known as a biofilter or trickle bed reactor. These TF reactors contain a support material on which a biofilm of micro-organisms is formed. The type of support material determines the pore size in the support material bed. The support material can be synthetic or biological in nature. The support material is attached to a structure whereby the bottom part of the reactor is free of support material.

The top of the carrier material bed is sprayed with process water, a liquid that contains the necessary nutrients for the micro-organisms. The process water makes its way down through gravity and drips through the carrier material bed with microorganisms into a biofilm, also called reactor bed. The biofilm is kept moist in this way. There forms

BE2017 / 5250 does not have an uninterrupted water column, as a result of which there is no pressure build-up in the liquid phase.

A gas stream is injected into the device from the bottom of the TF reactor. In the reactor bed, the gas contacts the process water, the liquid that runs down the support material. Because of the pores in the carrier material bed and the carrier material itself, the contact area between the gas phase and the liquid phase is large.

The transfer of the substrate, being the gas, to the liquid phase can be controlled by varying the pore size, the rate of gas flow, the operating pressure and the size of the bed or bed volume. The contact time between the gas phase and the liquid phase, the working pressure, the temperature and the pH of the liquid determine the transfer efficiency. If desired, the gas can be recirculated to extend the contact time of the gas.

To date, this type of TF reactors or biofilters has only been used for the removal of unwanted or annoying components from a gas stream, and also for the organic production of gaseous products.

For example, volatile organic components and hydrogen sulfide can be removed from a gas stream with a TF reactor and mixtures of hydrogen gas and carbon dioxide in a TF reactor can be converted to methane by methanogenic microorganisms as described in patents DE 102013009874A1 and WO 2014187985A1 .

BE2017 / 5250

This invention relates to a process for the production of gaseous, liquid or dissolved organic carbon compounds by converting waste gases into a biological gas fermentation process, the method using a TF reactor with an open support structure, on which microorganisms can grow in in the form of a biofilm.

An advantage of the open support structure of the TF reactor is that it allows a large contact area between gas and biofilm to be combined with a biological production process for liquid or dissolved organic carbon compounds.

The TF reactor is preferably a cylindrical reactor, with a thermally insulating and flameproof outer wall that allows the reactor to be operated at a temperature different from the ambient temperature, and where the process temperature in the reactor can be suitable for mesophilic (30-40 ° C). C), thermophilic (50-70 ° C) or super-thermophilic (80-90 ° C) microorganisms. The process pressure in the reactor can be equal to atmospheric pressure, but it can also be higher, up to 11 bar.

An advantage of such a thermally insulating TF reactor with adjustable temperature and pressure is that the reaction conditions can be adapted to the microorganism and the biological gas fermentation process envisaged, and the gas serving as a substrate for the metabolism of the chosen microorganism.

BE2017 / 5250

The TF reactor is provided with a carrier material bed that is synthetic or biological in nature and has a large specific surface area. When the carrier material is stacked, there is sufficient pore space for a free passage of the gas and blockage due to growth of biomass is avoided.

The support material is retained by a structure at the bottom of the reactor, so that the lower part of the TF reactor is free of support material.

If desired, the TF reactor is equipped with light sources through which the support material and the biofilm living thereon can be illuminated by artificial illumination with light of a specific wavelength or frequency.

An advantage of such lighting is that the gas can be photo-catalytically converted with the help of microorganisms.

A nutrient solution formulated specifically for the selected fermenting microorganisms, also referred to as process water, is sprayed evenly on top of the carrier material bed, optionally supplemented with microorganisms for additional inoculation.

The nutrient solution can be synthetically formulated, or it can consist of percolation water made from organic waste, or it can come from waste streams such as wastewater or other dissolved wastes.

BE2017 / 5250

The pH of the process water is adjusted according to the optimal pH for the biological culture of micro-organisms used. Other parameters such as the optimal process temperature can also be adjusted via an adjusted temperature of the process water.

The waste gas which is converted by the microorganisms into liquid or dissolved organic carbon compounds is preferably blown into the bottom of the reactor in counterflow. The residence time of the gas in the carrier material bed inoculated with microorganisms, also called reactor bed, determines the contact time between the gas phase and the liquid phase. Together with the operating pressure, this contact time determines the transfer efficiency of the gas to the liquid.

To increase the residence time of the gas in the reactor, the gas can be recirculated by means of a gas recirculation cycle. The process temperature can also be adjusted via the temperature of the recirculated gas.

The waste gas that functions as a substrate can differ in composition, but contains at least CO, COs or CH ₄ as a carbon source for the micro-organisms that form a biofilm on the carrier material. Without limiting nature, the following sources of this gas can be mentioned: biogas, gases arising from pyrolysis of biomass or mixed waste, exhaust gases from steel production, cement production or energy production, exhaust gases from bio-ethanol production or other fermentation processes and the like.

7

BE2017 / 5250

If the addition of hydrogen gas proves necessary, it can be produced by electrolysis of water. Toxic components must be removed from the waste gas beforehand, such as oxygen in case an anaerobic fermentation process takes place in the reactor.

This invention utilizes a mixed culture of microorganisms, which may be pre-enriched from a natural source. These microorganisms can use the gas as a substrate and use it as a carbon source for their growth.

The process for the organic production of liquid or dissolved organic carbon compounds via gas fermentation according to the invention comprises the following steps:

inoculating the surface of a support material in a TF reactor with the desired microorganisms before the start of the reactor operation;

- bringing the TF reactor to the desired temperature and pressure;

- bringing the process water to the desired temperature and pH, being a nutrient solution specifically formulated for the fermenting microorganisms used;

evenly spraying the process water on top of the

BE2017 / 5250 top of the inoculated carrier material bed;

- injecting into the bottom of the TF reactor a gas flow of waste gas or a gas to be converted into the reactor at the desired pressure and temperature;

- recirculating the process water that is collected in the lower part of the reactor via an external recirculation cycle;

utilizing the recirculation cycle to separate the formed liquid or soluble organic carbon compounds such as ethanol, short and medium chain carboxylic acids or still other carbon compounds formed by the microorganisms by an appropriate separation technique;

utilize it from the recirculation cycle in front of it measure continuously from the temperature and pH from it process water, and it so needed when sending it through it

heating and adding an acid or base;

- adding more water and nutrients to the process water via the recirculation cycle to compensate for evaporation and consumption;

adding more microorganisms via the recirculation cycle if more inoculation is required;

- optional recirculation of the gas after passage through the reactor via an external recirculation cycle before

- optionally measuring the composition of the te

BE2017 / 5250 gas;

recirculating gas and, if necessary, adjusting its composition by adjusting the gas supply;

- taking samples of the carrier material, whether or not provided with biofilm, via sampling ports that are regularly spaced in the outer wall of the reactor, in order to determine the thickness and composition of the biofilm at any height;

if necessary removing carrier material overgrown with biomass via an extraction system at the bottom of the TF reactor or adding new, inoculated or inoculated carrier material at the top of the TF reactor;

- further purifying the compounds formed by the microorganisms in the process water that collects in the lower part of the TF reactor which is free of material, by an appropriate separation technique such as membrane separation, solvent extraction, centrifugation or distillation or another other appropriate separation technique.

- optional purification in an additional purification step to a usable pure end product.

It is not necessary to inoculate the entire surface of the carrier material at the start. However, a larger proportion of inoculated carrier material will accelerate the start-up of the reactor.

«1

BE2017 / 5250

The micro-organisms in the biofilm convert the carbon present in the gas into gaseous products or organic carbon compounds that are liquid or soluble in the process water. These dissolved organic carbon compounds are, for example, ethanol or short- and medium-chain carboxylic acids, which list is not limiting.

The process water collected at the bottom of the reactor in the bottom part of the reactor is only slightly contaminated with biomass from the biofilm. This low suspended matter content allows the process water to recirculate and avoids a difficult separation step between biomass and process water at this stage.

The process water is recirculated outside the reactor via an external recirculation cycle. Several process steps can take place in this recirculation cycle:

- the separation of it shaped product from it process water; 25 monitoring process water; the temperature and pH from it - heating up the reactor temperature; it process water till the desired 30 the addition of additional water and nutrients On the

process liquid if it is respectively evaporated

BE2017 / 5250 and consumption by the micro-organisms are insufficiently present;

adding additional microorganisms to the process liquid to obtain additional inoculation of the support material;

- correcting the pH of the process water by adding an acid or base;

- the optional addition of other auxiliary substances via the process water flow.

Depending on the properties of the product and its concentration, the formed product can be separated off by means of membranes, solvent extraction, distillation, centrifugation or other separation techniques.

excess process water is collected.

That excess process water, or the separated product, can, if desired, serve as process water for a secondary reactor. This secondary reactor may contain a different population of microorganisms to further convert the product from the first reactor to higher quality other products. It is therefore possible to operate several reactors in series, whereby not every reactor must be equipped with a purification module.

For example, the excess process water can be sent as such to the next reactor in series and the product can only be purified after the next reactor.

BE2017 / 5250

The amount of excess process water, and therefore also the residence time of the process water in the reactor, is controlled by adding fresh process water.

The flow-through gas can, if desired, be recirculated after passage through the reactor via an external gas recirculation cycle. The following process steps can be performed in this external gas recirculation cycle:

measuring the pressure, temperature and composition of the gas after passage through the reactor;

purifying gas with sufficient gaseous reaction product and separating the reaction product;

- bringing gas to the desired pressure, temperature and composition with insufficient or no gaseous reaction product for reintroduction into the reactor vessel;

- reintroducing the formulated gas into the reactor.

The measurement of the gas composition after passage through the reactor can control an adjustment of the gas supply via a feedback loop.

For purification, the gas can be sent to a gas purification module. This purification may include the removal of water vapor from the gas, or the formation of a gaseous reaction product

BE2017 / 5250 must be separated.

Gas with insufficient reaction product, or gas from which insufficient carbon source (CO, CO ₂ , CH4) has been removed can also be recirculated, with the quality of this recirculated gas being controlled by a quality control module that adjusts the composition of the supplied recirculated gas based on of the measured composition.

With the insight to better demonstrate the features of the invention, hereinafter, by way of example without limitation, is a preferred embodiment of a process for producing organic gaseous, liquid or soluble carbon compounds from waste gases by means of a biological gas fermentation process in reference to the accompanying drawing, in which:

Figure 1 schematically represents an apparatus for carrying out the gas fermentation process according to the invention.

Figure 1 schematically shows an apparatus 1 for the production of liquid or dissolved organic carbon compounds via biological gas fermentation. The device comprises a vertically arranged cylindrical reactor vessel 2, provided with a support material 3 for micro-organisms, which is supported by a structure 4 with an extraction system, whereby the bottom part 5

BE2017 / 5250 of the cylindrical reactor vessel 2 is free from support material 3.

Between the support material 3 there is sufficient pore space 6 for a free passage of the gas Ί which is supplied via a gas supply 8 at the bottom of the reactor vessel 2, and subsequently upwards of the support material 3 of microorganisms, discharged through a gas flowing through that provided and at the top of the saf food 11.

and a reactor bed 9 of a biofilm 10 becomes reactor vessel 2

The gas discharge 11 is connected to an external gas recirculation cycle driven by a recirculation pump 13 which, if necessary, adjusts the gas to a desired temperature and composition through a quality control module for re-introduction into the reactor vessel through supply line and gas inlet 8.

If the gas flowing from the gas outlet 11 at the top of the reactor vessel is sufficiently rich in desired reaction products, it will not be recirculated through the quality control module 14, but will be passed through to a gas purification module 16, after which the purified gas is ready for use 17a. The gas components not suitable for reuse are sent back to the gas inlet 8 in a parallel recirculation loop 17b.

The reactor bed 9 becomes carrier material via a supply 18 and a spraying installation 19 at the top of the reactor vessel 2

BE2017 / 5250 .L D provided with a biofilm 10, sprayed with process water 20, being a nutrient solution specifically formulated for the fermentative microorganisms used. The process water 20 drips through the reactor bed 9 and is collected at the bottom of the reactor vessel 2, after which it ends up via a discharge 21 in a module for product purification 22, which, at a sufficiently high content of desired reaction products, will pass on the partly purified product to a module for product enrichment 23 of the desired end product, after which the end product can be applied.

If the content of desired reaction products is insufficient, the product purification module 22 will pass the process water 20 to the external recirculation cycle 24 of the process water 20, which passes the process water 20 successively through a temperature control module 25 and a pH control module 26 before feeding the process water 20 via inlet 18 back to the spraying installation 19 at the top of the reactor vessel 2.

The temperature control module 25 is provided with a heat exchanger 27 with which the process water 20 can be brought to the desired temperature. The pH control module 26 is provided with a supply of acid 28 and a supply of base 29 to bring the process water 20 to the desired pH.

The reactor vessel 2 is provided with an extraction system 30, with which support material 3 overgrown with biomass in the biofilm 10 can be removed from the reactor vessel 2 and

BE2017 / 5250 with which new carrier material 3 can be introduced, whether or not inoculated with micro-organisms.

The reactor vessel 2 is also provided with sampling ports 31 and / or measuring points which are arranged in the outer wall of the reactor vessel 2 at regular intervals, allowing the thickness and composition of the biofilm 10 on the support material 3 at several heights of the reactor vessel 2 to decide.

Furthermore, the structure 4 is provided with light sources 32, for artificial illumination of the support material 3 with biofilm 10 with a specific light wavelength for photocatalytic conversion of the gas 7.

The operation of the apparatus 1 for the production of organic carbon compounds by gas fermentation can be explained as follows.

To produce gas fermentation products according to the invention, waste gas 7 is injected at the bottom of the reactor vessel 2 via inlet 8. The gas rises in the reactor vessel 2, through the reactor bed 9 of support material 3 which is provided with a biofilm 10.

If the waste gas contains too many toxic components, these are removed from the gas prior to introduction into the reactor. The gas pressure in the reactor vessel 2 can, if desired, be brought to a pressure higher than atmospheric pressure.

BE2017 / 5250

The reactor bed 9 is retained at the bottom by a structure 4 in the reactor vessel 2, and is uniformly wetted at the top with process water 20 which is sprayed on top of the reactor bed via the spraying installation 19.

The structure 4 contains an extraction system at the bottom through which the supported support material can be extracted from the reactor 2 and at the top contains a distribution system for introducing new support material 3.

On the support material 3 there is a biofilm 10 which consists of a mixed culture of micro-organisms that use the ascending waste gas 7 as a substrate and carbon source and use the dripping process water 20 as a source of nutrients for the organic production of carbon-containing liquid or soluble products and biomass by gas fermentation.

The thickness of the biomass is measured by sampling the carrier material via sampling ports 31 at several heights of the reactor vessel 2. At the bottom of the reactor bed 9, support material 3, overgrown with biomass, can be removed via an extraction system, while at the top the reactor bed can be replenished with 25 new carrier material 3, whether or not inoculated with micro-organisms.

The gas 7 which has flowed through the reactor bed 9 can be purified in a gas purification module 16. This purification may include, inter alia, the removal of water vapor from the gas, or the formation of a gaseous gas

BE2017 / 5250 reaction product must be separated.

Gas with insufficiently intended reaction product or gas whose substrate (CO2, CO, CHk) has been insufficiently consumed can also be recirculated, whereby the quality of this recirculated gas is controlled by a quality control module 14 that determines the composition of the supplied recirculated gas adjust based on the measured composition.

The liquid or soluble carbonaceous products formed end up in the process water 20. The process water 20 contains a low amount of suspended matter and biomass because the biomass is efficiently retained on the support material in the form of a biofilm 10.

The process water 20 is fed via the outlet 21 to the module for product purification 22, which, at a sufficiently high content of desired reaction products, will forward the process water 20 'to a module for contact 23 of the desired end product, after which the end product for application is available.

The final product contact module 23 uses a suitable separation technique, such as, for example, membrane separation, solvent extraction or distillation, and results in a product that can be further purified to the desired quality if necessary. This additional purification step may also involve a further biological conversion into a second bioreactor.

BE2017 / 5250

Alternatively, the process water 20 can be sent directly to a series-placed bioreactor without prior contact with the end product, in which a biological conversion of the process water 20 to a desired end product then takes place.

The product purification module 22 will remove finished product from the process water 20 until the minimum concentration that can be achieved with the chosen purification technique is reached, after which the process water 20 is sent to the external recirculation cycle 24 which successively processes the water 20 through a temperature control module 25 and a module for pH control 26.

In the temperature control module, the temperature of the process water 20 is brought to the desired process temperature by means of a heat exchanger 27. In the pH control module, the process water is brought to the desired pH for supply to the reactor vessel 2, by adding an acid 28 or a base 29. Also, nutrients for the micro-organisms are added, or fresh water is added if too much water was lost through evaporation. The process water 20 can now be re-introduced via the inlet 18 to the sprinkler 19 for recirculation.

If the product purification module 22 detects a surplus of process water, the excess is discharged as waste water.

The pore size in the reactor bed 9 can decrease due to the

BE2017 / 5250 proliferation of the biofilm 10, whereby a part of the carrier material 3 with biomass has to be removed via an extraction system 30. This removal may also be necessary to control the residence time of the biomass in the reactor vessel 2 or to harvest the biomass.

New carrier material, whether or not pre-inoculated, is then added on top of the reactor bed 9.

The light sources 32 present in the reactor vessel 2 illuminate the biofilm 10 on the support material 3 with a specific wavelength or frequency, in case the waste gas 7 has to be converted by biological photo-catalytic conversions.

The waste gas 7, which is converted by the microorganisms into organic carbon compounds, is preferably blown in the bottom of the reactor in counterflow. The residence time of the gas in the reactor bed 9 determines the contact time between the gas phase and the liquid phase. Together with the operational pressure, this determines the transfer efficiency of the gas. If desired, to increase the residence time of the gas in the reactor, the gas can be recirculated through the external recirculation cycle 12.

The waste gas 7 or process gas differences in composition, but contains at least CO, C0 ₂ or CH4 as carbon source for the micro organisms. Sources from this gas can, under Others, , without other sources from to Close,

are: biogas, gases obtained by pyrolysing biomass, gases obtained by pyrolysing mixed

BE2017 / 5250 waste, exhaust from steel production, exhaust from energy production facilities, exhaust from bioethanol production or other fermentation processes, exhaust from the cement industry.

If the dosing of hydrogen gas proves necessary, this can be produced by electrolysis of water.

Toxic components should be previously removed from the waste gas to below the toxicity limit for the enriched microorganisms. If an anaerobic process takes place in the reactor, oxygen is a toxic component.

This invention makes use of a mixed culture of 15 micro-organisms, which may have been previously enriched from a natural source. These micro-organisms can use waste gas as a carbon source for their growth. The optimum process temperature for the microorganisms is mesophilic, thermophilic or super-thermophilic, depending on the impact. The pH of the process is controlled to be optimal for the selected microorganisms and the selected process.

It goes without saying that variations in the biological gas fermentation apparatus used are possible.

For example, the reactor bed can consist of several cylindrical reactor beds, and these reactor beds can rotate about, for example, their vertical axis.

For example, the control of the recirculation cycle of process water and of the recirculation cycle of the

BE2017 / 5250 waste gas can be automated and controlled by an electronic control unit, taking into account multiple measurement data in the process, such as pH, temperature, operating pressure, composition of gas, process water, and gaseous, liquid or soluble carbon compounds.

The present invention has been described by way of example and embodiment, but is by no means limited in the figures to the such method as shown for the production of gaseous, liquid or dissolved organic carbon compounds and an apparatus for applying this method can be realized according to various variants without outside within the scope of the invention as set forth in the following claims.

BE2017 / 5250

Claims (13)

Conclusions. 1.- Process for the production of gaseous, liquid 5 or dissolved organic carbon compounds via gas fermentation by micro-organisms, characterized in that it comprises the following steps: - inoculating the surface of a support material (3) in a TF reactor (2) with the desired microorganisms before the start of the reactor operation; - bringing the TF reactor (2) to the desired temperature and pressure; - bringing the process water (20), which is a nutrient solution specifically formulated for the fermenting microorganisms used, to the desired temperature and pH; - uniformly spraying the process water (20) on top of the top of the inoculated carrier material bed (9); - injecting into the bottom of the TF reactor (2) A gas stream of waste gas (7) or gas to be converted into the reactor at the desired pressure and temperature; - recirculating the process water (20) that is collected in the bottom part (5) of the reactor via 30 an external recirculation cycle (24); BE2017 / 5250 - utilizing the recirculation cycle (24) to separate the liquid organic carbon compounds formed such as ethanol, short and medium chain carboxylic acids or other carbon compounds formed by the microorganisms by an appropriate separation technique; - utilizing the recirculation cycle (24) for continuously measuring the temperature (25) and pH (26) of the process water, and if necessary controlling it by heating and adding acid (28) or base (29) ; - adding more water and nutrients to the process water via the recirculation cycle (24) to compensate for evaporation and consumption; - adding more microorganisms via the recirculation cycle (24) if more inoculation is required; - optionally recirculating the gas (7) after passage through the reactor (2) via an external gas recirculation cycle (15); - optionally measuring (14) the composition of the gas to be recirculated and, if necessary, adjusting its composition by adjusting the gas supply; ~ taking samples of the support material, whether or not provided with biofilm (10), via sampling ports (31) that are regularly spaced in the outer wall of the reactor (2), in order to determine the thickness and composition of BE2017 / 5250 to determine the biofilm (10) at any height; - if necessary removing carrier material (3) overgrown with biomass via an extraction system (30) at the bottom of the TF reactor and adding new carrier material (3), whether or not inoculated with micro-organisms. - further purifying the compounds formed by the microorganisms in the process water (20) which collects in the lower part (5) of the TF reactor (2) which is free of material, by an appropriate separation technique (22) such as membrane separation, solvent extraction, centrifugation or distillation or any other appropriate separation technique. - optionally purification in an additional purification step (23) to a usable concentrated end product. Method according to claim 1, characterized in that the following process steps take place in the recirculation cycle (24) of the process water (20): - the separation of the product from the process water (20); - monitoring the temperature (25) and pH (26) of the process water; heating the process water to the desired reactor temperature; adding extra water and nutrients to the BE2017 / 5250 process liquid (20) if these are insufficiently present due to evaporation and consumption by the micro-organisms; adding additional microorganisms to the process fluid (20) to obtain additional inoculation of the support material; - correcting the pH of the process water by means of the addition of acid (28) or base (29); the optional addition of additives via the process water flow. Method according to claim 1, characterized in that the following process steps can be performed in the external gas recirculation cycle (15): - measuring the pressure, temperature and composition of the gas (14) after passing through the reactor; purifying gas (16) with sufficient gaseous reaction product and separating the reaction product; - bringing gas (14) to the desired pressure, temperature and composition with insufficient or no gaseous reaction product for reintroduction into the reactor vessel (2); - reintroducing (8) the formulated gas into the reactor. BE2017 / 5250 4. Work them according to conclusion 1, characterized by it Which it waste gas (7) or to put gas at least CO, CO2 or CH / i contains as carbon source for the micro organisms. 5. Device (1) for the production of liquid or dissolved organic carbon compounds via biological gas fermentation applying the method according to any one of the preceding claims, characterized in that the device comprises at least one vertically arranged cylindrical 10 comprises a reactor vessel (2), which is provided with at least one reactor bed (9) of support material (3) with a biofilm (10) of microorganisms, and with a spraying installation (19) at the top of the reactor vessel (2) for spraying the reactor bed (9) with process water (20), and is provided with a drain for process water (21) at the bottom of the reactor vessel (2) for draining through process water (20), and is additionally provided with a gas supply (8) at the bottom of the reactor vessel (2) for introducing waste gas (7) or gas to be converted, and a gas outlet (11) of the gas passed through the reactor bed at the top of the reactor vessel (2). 6. Device according to claim 5, characterized in that the gas discharge (11) is connected to an external recirculation cycle (12) for gas driven by a recirculation pump (13) which passes the gas through a quality control module (14) which if necessary, brings gas to the desired pressure, temperature and composition for re-introduction into the reactor vessel (2) via supply line (15) and the gas input (8). BE2017 / 5250 Device according to claim 5, characterized in that the gas outlet (11) is connected to a gas purification module (16) which purifies the gas until it is ready for use (17). Device according to claim 5, characterized in that the process water outlet (21) at the bottom of the reactor vessel is connected to a module for product purification (22), which is connected on the one hand to a module for contact (23) of the desired end product. , in order to prepare the finished product for application, and on the other hand, it is connected to an external recirculation cycle (24) of the process water 20, which successively processes the process water (20) through a pressure and temperature control module (25) and a module for pH control (26) before the process water (20) is fed back via the inlet (18) for process water (20) to the spraying installation (19) at the top of the reactor vessel 2. Device according to claim 8, characterized in that the module for pressure and temperature control (25) is provided with a heat exchanger (27) with which the process water (20) can be brought to the desired temperature. Device according to claim 8, characterized in that the pH control module (26) is provided with an acid supply (28) and a base supply (29) to bring the process water (20) to the desired pH. . Device according to claim 5, characterized in that BE2017 / 5250 that the reactor vessel (2) is equipped with an extraction system (30), with which support material (3) grown with biomass in the biofilm (10) can be removed from the reactor vessel (2) or new carrier material (3) can be added 5 inoculated or not with new micro-organisms. 12. Device according to claim 5, characterized in that the reactor vessel (2) is provided with sampling ports (31) which are arranged in the outer wall of the reactor vessel (2) at regular intervals, which allow the thickness and composition of the determine biofilm (10) at multiple heights of the reactor vessel (2). Device according to claim 5, characterized in that the reactor vessel (2) or the supporting structure (4) is provided with light sources (32), for artificial illumination of the support material (3) with biofilm (10) with a specific light wavelength for photocatalytic conversion of the gas to be converted (7). Device according to claim 5, characterized in that an electronic control unit controls the recirculation cycle (24) of process water (20) and the external recirculation cycle (12) for gas, wherein the The control unit takes into account several measurement data in the fermentation process, such as the pH, the temperature, the operating pressure, the composition of the gas and the process water, and the amount of liquid or soluble carbon compounds formed. BE2017 / 5250 Process for the production of gaseous, liquid or dissolved organic carbon compounds via gas fermentation. BE2017 / 5250 The invention relates to a process for the production of gaseous, liquid or dissolved organic carbon compounds via gas fermentation by microorganisms which are inscribed on the surface of a support material (3) in a Trickling Filter (TF) reactor in which they are brought to the desired temperature and pressure and sprayed at the top with process water (20), being a specific nutrient solution, and injected at the bottom with a gas stream (7) of gas to be converted, the process water being recirculated into an external recirculation cycle and optionally recirculating the gas after passage through the reactor via an external recirculation cycle.