Process for the preparation of synthesis gas from liquid feedstocks

Abstract

The present invention relates to a method for preparing syngas, the method comprising (i) preparing a first feed stream comprising a liquid phase and a gas phase, wherein the liquid phase comprises one or more organic compounds and wherein the gas phase comprises CO2; (ii) preparing a second feed stream comprising O2 and optionally vapor; (iii) mixing the first feed stream and the second feed stream; and (iv) reacting the mixed feed stream obtained from (iii) in a reaction zone to obtain a product stream comprising H2, CO, optionally CO2 and optionally H2O, wherein the one or more organic compounds comprise one or more of C, H and optionally O, S and N.

Description

Technical Field

[0001] The present invention relates to a method for preparing syngas (also known as synthesis gas) via a partial oxidation reaction of one or more organic compounds, wherein at least a portion of the one or more organic compounds is provided in liquid form, and wherein the partial oxidation is preferably carried out without the use of a catalyst. Background Technology

[0002] Typically, syngas contains H2 and CO, and may also contain one or both of CO2 and H2O. Syngas with a specific H2 to CO molar ratio can be prepared as needed. Syngas preparation is typically accomplished by the partial oxidation of organic compounds in the presence of one or more of O2 and steam. CO2 can be produced as a byproduct and can be separated from the product stream. The separated CO2 can also be recycled back into the preparation process.

[0003] WO 2015 / 090575 A1 generally relates to methods and apparatus for producing syngas.

[0004] WO 2022 / 200532 A1 relates to a method for producing a synthesis gas mixture containing hydrogen and carbon monoxide by non-catalytic partial oxidation of hydrocarbons in the presence of oxygen and carbon dioxide. In this method, at least a reactant gas containing hydrocarbons, a reactant gas containing oxygen, and a reactant gas containing carbon dioxide are fed into a partial oxidation reactor and reacted at a temperature in the range of 1200°C to 1550°C to obtain a product gas mixture containing hydrogen, carbon monoxide, and carbon dioxide, wherein at least a portion of the carbon dioxide is separated from the product gas mixture and fed back into the partial oxidation reactor. The method is characterized in that the carbon dioxide fed into the partial oxidation reactor contains additional input carbon dioxide, wherein a product gas mixture in the partial oxidation reactor is obtained with a hydrogen to carbon monoxide molar ratio in the range of 0.8:1 to 1.6:1.

[0005] US 10435295 relates to a method for preparing liquid fuel from syngas, the method particularly comprising: providing a waste conversion reactor having a decomposition chamber in which waste material comprising organic and inorganic waste is pyrolyzed to produce high-temperature syngas from the organic material and slag from the decomposition of the inorganic waste; the waste conversion reactor comprising a submerged arc furnace or plasma torch furnace for supplying heat to the decomposition chamber for pyrolyzing and decomposing the organic and inorganic waste material; and introducing the syngas into a liquid fuel synthesis system comprising one or more syngas conversion reactors in which the syngas is converted into liquid fuel. Claim 7 discloses that one or more effluent streams comprising water, carbon dioxide, and tail gas from the syngas conversion reactor may be introduced into the waste conversion reactor.

[0006] US 2016 / 0362355 A1 pertains to the production of petroleum products containing gasoline. This product contains hydrocarbon compounds within the gasoline composition range. The dimethyl ether (DME) purification process used allows for a smaller reactor by reducing the feed rate, thus lowering costs. Carbon dioxide (CO2) can be separated and recycled back to the gasifier for reuse, storage, or other uses to improve the global environment. Simultaneously, CO2 can be reacted with hydrocarbons, water vapor, etc., via a high-temperature plasma torch to produce syngas (syngas), a gas used to adjust the hydrogen / carbon ratio in compounds synthesized from biomass or hydrocarbons, and to facilitate subsequent chemical synthesis reactions. Ultimately, the final gasoline production boasts high yield, high octane ratio, low nitrogen and sulfur pollution, and a highly 'green' quality.

[0007] WO 2021 / 180482 A1 discloses a method for producing syngas by gasifying (preferably by plasma gasification) a carbonaceous material using a gasification gas containing at least 2 mol% carbon dioxide and optionally at least one gas selected from steam, oxygen, hydrogen, methane, and air. External energy obtained from electricity is supplied during the gasification step, and the carbon dioxide-containing waste gas from the process is at least partially recycled back to the gasification step. Furthermore, the invention proposes a method for producing downstream products of the syngas, wherein the syngas is produced by this method and used as an intermediate product in downstream synthesis methods.

[0008] US 2022 / 234889 A1 relates to a method for controlling the composition of syngas by reactor temperature. Specifically, it discloses a method for producing syngas that includes the partial oxidation of hydrocarbon-containing feedstocks, wherein the partial oxidation is carried out under specific reaction conditions.

[0009] EP 3878807 A1 relates to a method for producing syngas via allothermic gasification and controlled carbon dioxide reduction. In particular, it discloses a method for producing syngas by gasifying carbonaceous materials.

[0010] Since organic compounds exist in liquid form, there is a need for a method to prepare syngas using one or more organic compounds in liquid form.

[0011] Therefore, the objective is to provide a method for producing syngas that allows for the processing of liquid feedstocks. Another objective is to provide a method for producing syngas that recycles CO2 to reduce the required O2 and vapor quantities. A further objective is to provide a method for producing syngas from liquid, recycleable, or non-recycled liquid feedstocks, specifically achieving a CO2 neutral equilibrium. Summary of the Invention

[0012] Therefore, it has been unexpectedly discovered that feed streams containing one or more organic compounds in the liquid phase can be used to produce syngas. Furthermore, it has been found that CO2, which may be generated as a byproduct, can be recycled back into the process. By recycling CO2, it has been found that the amount of O2 and H2O added can be reduced. Additionally, it has been found that the recycled CO2 can be used to spray one or more organic compounds into the reaction zone. This provides a more efficient method, in which higher CO yields can be achieved, in particular.

[0013] Therefore, the present invention relates to a method for preparing syngas, the method comprising:

[0014] (i) Preparing a first feed stream comprising a liquid phase and a gas phase, wherein the liquid phase comprises one or more organic compounds, and wherein the gas phase comprises CO2;

[0015] (ii) Prepare a second feed stream containing O2 and optionally steam;

[0016] (iii) The first feed stream and the second feed stream are mixed to obtain a mixed feed stream;

[0017] (iv) React the mixed feed stream obtained in (iii) in a reaction zone to obtain a product stream containing H2 and CO, and optionally containing CO2, H2O, or CO2 and H2O.

[0018] The one or more organic compounds independently contain C, H, and optionally one or more of O, S, and N.

[0019] Preferably, 90 to 100 wt%, more preferably 95 to 100 wt%, and even more preferably 99 to 100 wt%, of one or more organic compounds contained in the liquid phase of the first feed stream prepared in (i) are composed of C, H, and optionally one or more of O, S and N.

[0020] Preferably, 49.5 to 100% by weight, more preferably 60 to 95% by weight, and even more preferably 70 to 95% by weight, of one or more organic compounds consisting of C.

[0021] Preferably, 0.5 to 12% by weight, more preferably 2 to 11% by weight, and even more preferably 4 to 11% by weight, of one or more organic compounds consisting of H.

[0022] Preferably, 0 to 50% by weight, more preferably 0 to 40% by weight, even more preferably 0 to 30% by weight, and even more preferably 0 to 20% by weight or less, of one or more organic compounds consisting of O.

[0023] Preferably, one or more organic compounds consisting of S are 0 to 10% by weight, more preferably 0 to 6% by weight, and even more preferably 0 to 4% by weight.

[0024] Preferably, one or more organic compounds consisting of N are 0 to 10% by weight, more preferably 0 to 6% by weight, and even more preferably 0 to 4% by weight.

[0025] Preferably, the one or more organic compounds contained in the liquid phase are selected from the group consisting of: pyrolysis oil, heating oil, vacuum residue (preferably vacuum distillation residue), crude oil residue, heavy crude oil, extra-heavy crude oil, tar sands bitumen, bottom residue of visbreaker unit, bottom residue of deasphalt unit, C5 asphaltene fraction (preferably C5 asphaltene), high viscosity residue, bio-oil, fuel oil, pyrolysis gasoline, tire pyrolysis oil (TPO), waste oil, used oil, and mixtures thereof, wherein the one or more organic compounds are preferably pyrolysis oil.

[0026] When the liquid phase contains one or more organic compounds selected from the group consisting of pyrolysis oil, heating oil, vacuum residue (preferably vacuum distillation residue), crude oil residue, heavy crude oil, extra-heavy crude oil, tar sands asphalt, bottom residue of a viscosity-reducing cracking unit, bottom residue of a deasphalting unit, C5 asphalt fraction (preferably C5 asphalt), high-viscosity residue, bio-oil, fuel oil, pyrolysis gasoline, tire pyrolysis oil (TPO), waste oil, used oil, and mixtures thereof, it is preferred that the pyrolysis oil is preferably obtained from one or more of biomass, plastic waste, and mixed plastic waste, preferably mixed plastic waste, wherein the mixed plastic waste preferably contains optionally shredded waste tires, and more preferably contains one or more of the following: polyethylene, polypropylene, polyisoprene, polyethylene terephthalate, polystyrene, copolymers of one or more of these, block polymers of one or more of these, graft copolymers of one or more of these, and mixtures of two or more of these.

[0027] Furthermore, when the one or more organic compounds contained in the liquid phase are selected from the group consisting of pyrolysis oil, heating oil, vacuum residue (preferably vacuum distillation residue), crude oil residue, heavy crude oil, extra-heavy crude oil, tar sands asphalt, bottom residue of a viscosity-reducing cracking unit, bottom residue of a deasphalting unit, C5 asphalt fraction (preferably C5 asphalt), high viscosity residue, bio-oil, fuel oil, pyrolysis gasoline, tire pyrolysis oil (TPO), waste oil, used oil, and mixtures thereof, it is preferable that the heating oil is selected from the group consisting of: (C1-C 100 Hydrocarbons, preferably (C5-C) 80 Hydrocarbons, more preferably (C) 10 -C 60 Hydrocarbons, more preferably (C) 11 -C 40 Hydrocarbons, more preferably (C) 12 -C 25 Hydrocarbons, more preferably (C) 13 -C 21 Hydrocarbons, preferred (C) 14 -C 20 )hydrocarbon.

[0028] Preferably, the heating oil has a boiling point in the range of 100°C to 1,000°C, more preferably in the range of 150°C to 750°C, more preferably in the range of 200°C to 500°C, more preferably in the range of 225°C to 375°C, and even more preferably in the range of 250°C to 350°C (preferably at a pressure in the range of 0.99 to 1.01 bara).

[0029] Preferably, one or more organic compounds have a low calorific value in the range of 20 to 60 MJ / kg, more preferably in the range of 30 to 50 MJ / kg.

[0030] Preferably, 90 to 100% by weight, more preferably 95 to 100% by weight, and even more preferably 99 to 100% by weight, of the gas phase contained in the first feed stream prepared in (i) is composed of CO2.

[0031] Preferably, the first feed stream prepared in (i) has a weight ratio (organic compound:CO2) of one or more organic compounds to CO2 equal to or greater than 1:5, more preferably in the range of 1:5 to 1,000:1, more preferably in the range of 1:5 to 500:1, more preferably in the range of 1:5 to 100:1, more preferably in the range of 1:5 to 50:1, more preferably in the range of 1:1 to 25:1, more preferably in the range of 2:1 to 20:1, and more preferably in the range of 5:1 to 15:1.

[0032] Preferably, the first feed stream prepared in (i) is composed of one or more organic compounds and CO2, and is 90 to 100% by weight, more preferably 95 to 100% by weight, and even more preferably 99 to 100% by weight.

[0033] Preferably, the first feed stream prepared in (i) exhibits a multiphase flow pattern, more preferably a two-phase flow pattern.

[0034] According to the first alternative, it is preferred that the first feed flow prepared in (i) exhibits a dispersed flow regime, a plug flow regime, a slug flow regime, a wave flow regime, a stratified flow regime, an annular flow regime, or a mist flow regime, preferably a dispersed flow regime, wherein the first feed flow prepared in (i) preferably exhibits a horizontal flow.

[0035] According to the second alternative, preferably, the first feed stream prepared in (i) exhibits a churn flow regime, annular flow regime, bubbly flow regime, slag flow regime, or mist flow regime, preferably annular flow regime or mist flow regime, more preferably mist flow regime, wherein the first feed stream prepared in (i) preferably exhibits vertical flow.

[0036] Preferably, the liquid phase of the first feed stream prepared in (i) has a viscosity in the range of 20 to 6,000 mPas, more preferably in the range of 100 to 5,000 mPas, wherein the viscosity is preferably determined according to Reference Example 1.

[0037] Preferably, the first feed stream prepared in (i) has a temperature in the range of 50°C to 220°C, more preferably in the range of 80°C to 190°C, and even more preferably in the range of 110°C to 160°C.

[0038] Preferably, the first feed stream prepared in (i) has a pressure in the range of 5 to 80 bar, more preferably in the range of 35 to 60 bar, and even more preferably in the range of 42 to 52 bar.

[0039] Preferably, the first feed stream prepared in (i) has a mass flow rate in the range of 100 to 20,000 kg / h, more preferably in the range of 3,000 to 17,000 kg / h, more preferably in the range of 5,000 to 15,000 kg / h, and even more preferably in the range of 6,000 to 14,000 kg / h.

[0040] Preferably, 90 to 100 wt% of the second feed stream prepared in (ii) is composed of O2, more preferably 95 to 100 wt% and more preferably 99 to 100 wt%.

[0041] Preferably, the second feed stream prepared in (ii) contains steam, wherein the second feed stream prepared in (ii) more preferably has a weight ratio of O2 calculated as elemental O2 to steam calculated as H2O in the range of 1:10 to 100:1, more preferably in the range of 1:1 to 61:1 (O2: steam).

[0042] Preferably, the second feed stream prepared in (ii) has a temperature in the range of 25°C to 400°C, more preferably in the range of 50°C to 300°C, and even more preferably in the range of 90°C to 250°C.

[0043] Preferably, the second feed stream prepared in (ii) has a pressure in the range of 5 to 80 bar, more preferably in the range of 35 to 60 bar, and even more preferably in the range of 40 to 52 bar.

[0044] Preferably, the second feed stream prepared in (ii) has a mass flow rate in the range of 100 to 20,000 kg / h, more preferably in the range of 3,000 to 17,000 kg / h, more preferably in the range of 5,000 to 15,000 kg / h, and even more preferably in the range of 6,000 to 14,000 kg / h.

[0045] Preferably, the mixing in (iii) is carried out by spraying the first feed stream and the second feed stream, forming droplets of liquid phase and optionally liquid fragments.

[0046] Preferably, the mixture in (iii) includes

[0047] (iii.1) Preferably, the first feed stream and the second feed stream are mixed in a mixing chamber to obtain a mixed feed stream;

[0048] (iii.2) The mixed feed stream obtained in (iii.1) is fed into the reaction zone.

[0049] In cases where the mixing in (iii) includes (iii.1) and (iii.2) as defined herein, it is preferred that the mixing in (iii.1) is carried out by spraying the mixing feed stream, forming droplets of liquid phase and optionally liquid fragments.

[0050] In addition, where the mixing in (iii) includes (iii.1) and (iii.2) as defined herein, it is preferred that the mixed feed stream be fed into the reaction zone by spraying the mixed feed stream, forming droplets of liquid phase and optionally liquid fragments.

[0051] In the case where mixing in (iii.1) is carried out by spraying the mixing feed stream, forming droplets of liquid phase, and optionally liquid fragments, spraying preferably includes applying a concentration of 100 to 1500 m to the mixing feed stream. 3 Within the range of / h, more preferably within 200 to 1000 m 3 Flow rate within the range of / h.

[0052] Preferably, the mixed feed flow obtained in (iii) exhibits a multiphase flow pattern, more preferably a two-phase flow pattern.

[0053] Preferably, the mixed feed flow obtained in (iii) exhibits a dispersed flow pattern, a plunger flow pattern, a slug flow pattern, a wave flow pattern, a stratified flow pattern, an annular flow pattern, or a mist flow pattern, preferably a dispersed flow pattern, wherein the mixed feed flow obtained in (iii) preferably exhibits a horizontal flow pattern.

[0054] Preferably, the mixed feed flow obtained in (iii) exhibits an agitated flow pattern, an annular flow pattern, a bubbly flow pattern, a slag-like flow pattern, or a mist-like flow pattern, preferably an annular flow pattern or a mist-like flow pattern, more preferably a mist-like flow pattern, wherein the mixed feed flow obtained in (iii) preferably exhibits a vertical flow pattern.

[0055] Preferably, the mixed feed stream obtained in (iii) has a weight ratio of one or more organic compounds to O2 in the range of 0.10:1 to 2.00:1, more preferably in the range of 0.25:1 to 1.50:1 (organic compound:O2).

[0056] Preferably, the mixed feed stream obtained in (iii) has a weight ratio (CO2:O2) of CO2 to O2 in the range of 1:500 to 1:10, more preferably in the range of 1:100 to 1:5.0, more preferably in the range of 1:75 to 1:2.0, and more preferably in the range of 1:50 to 1:1.5.

[0057] Preferably, the mixed feed stream obtained in (iii) has a weight ratio (organic compound: steam) of one or more organic compounds in the range of 1:1 to 100:1, more preferably in the range of 5:1 to 50:1, more preferably in the range of 7:1 to 41:1, and more preferably in the range of 20:1 to 25:1.

[0058] Preferably, the reaction in (iv) is carried out at a temperature in the range of 1100°C to 1500°C, more preferably in the range of 1200°C to 1450°C, and even more preferably in the range of 1225°C to 1425°C.

[0059] Preferably, the reaction in (iv) is carried out by vaporization, more preferably by entrained vaporization (German "Flugstromvergasung").

[0060] Preferably, in (iv), the mixed feed stream exhibits a retention time in the reaction zone in the range of 1 to 10 s.

[0061] Preferably, the product stream obtained in (iv) contains a mole fraction of CO in the range of 0.30 to 0.95, more preferably in the range of 0.40 to 0.90, and even more preferably in the range of 0.45 to 0.88.

[0062] Preferably, the product stream obtained in (iv) contains a mole fraction of H2 in the range of 0.05 to 0.60, more preferably in the range of 0.10 to 0.50, and even more preferably in the range of 0.20 to 0.50.

[0063] Preferably, the method further includes, after (iv)

[0064] (v) Separate CO2 from the product stream obtained in (iv) to obtain a CO2-containing stream and a CO2-lean product stream.

[0065] In cases where the method further includes (v), it is preferred that CO2 separation is carried out by a CO2 scrubber or by CO2 absorption.

[0066] Furthermore, where the method further includes (v), it is preferable that the method further includes (v) after (v).

[0067] (vi) The CO2-containing stream obtained in compression (v) is preferably compressed to a pressure in the range of 5 to 80 decibars, preferably in the range of 35 to 60 decibars, and more preferably in the range of 42 to 52 decibars.

[0068] Furthermore, where the method further includes (v), preferably (v) and (vi), according to the first alternative, it is preferred that the method further includes (v) after (v), preferably after (vi).

[0069] (vii) The CO2-containing stream obtained in (v) or (vi) is recycled to the first feed stream prepared in (i).

[0070] In cases where the method further includes (vii), it is preferred that 1 to 100% by weight, more preferably 25 to 75% by weight, and even more preferably 40 to 60% by weight of the CO2 contained in the first feed stream prepared in (i) consists of recycled CO2 from a CO2-containing stream obtained in (v) or (vi).

[0071] Furthermore, where the method further includes (v), preferably (v) and (vi), according to the second alternative, it is preferred that the method further includes (v) after (v), preferably after (vi).

[0072] (vii') The CO2-containing stream obtained in (v) or (vi) is recycled to the first feed stream prepared in (i), wherein the weight ratio of the CO2 recycled to the first feed stream to the CO2 contained in the first feed stream prepared in (i) is in the range of 1:1 to 5:1, preferably in the range of 1:1 to 2:1, and more preferably in the range of 1:1 to 1.5:1.

[0073] In cases where the method further includes (vii'), preferably, 1 to 100% by weight, more preferably 25 to 75% by weight, more preferably 40 to 60% by weight of the CO2 recycled to the first feed stream obtained from (vii') consists of recycled CO2 from the CO2-containing stream obtained from (v) or (vi).

[0074] Preferably, the method further includes, after (iv) and more preferably after (v), steps 1-4.

[0075] (viii) Add H2 to the product stream obtained in (iv) or to the CO2-poor product stream obtained in (v).

[0076] In cases where the method further includes (viii), it is preferred that the H2 added to the product stream obtained in (iv) or to the CO2-poor product stream obtained in (v) includes one or more of the following: H2 obtained from a pipeline, H2 obtained from a tank, H2 obtained from a different method (preferably H2 obtained from a method for preparing styrene), and H2 obtained from electrolysis (preferably H2 obtained from electrolysis using green energy).

[0077] Preferably, the first feed stream in preparation (i) includes

[0078] (i.1) Preparing a stream containing one or more organic compounds;

[0079] (i.2) Prepare a stream containing CO2;

[0080] (i.3) The stream containing one or more organic compounds obtained in (i.1) and the stream containing CO2 obtained in (i.2) are mixed to obtain the first feed stream.

[0081] In cases where the preparation of the first feed stream in (i) includes (i.1), (i.2) and (i.3), it is preferred that the stream containing one or more organic compounds prepared in (i.1) has a temperature in the range of 10°C to 350°C, more preferably in the range of 25°C to 300°C, more preferably in the range of 50°C to 200°C, and more preferably in the range of 70°C to 150°C.

[0082] Furthermore, in cases where the preparation of the first feed stream in (i) includes (i.1), (i.2), and (i.3), it is preferable that the stream containing one or more organic compounds prepared in (i.1) has a pressure in the range of 5 to 80 decibars, more preferably in the range of 35 to 60 decibars, and even more preferably in the range of 42 to 52 decibars.

[0083] Furthermore, in cases where the preparation of the first feed stream in (i) includes (i.1), (i.2), and (i.3), it is preferable that the stream containing one or more organic compounds prepared in (i.1) has a mass flow rate in the range of 100 to 20,000 kg / h, more preferably in the range of 3,000 to 17,000 kg / h, more preferably in the range of 5,000 to 15,000 kg / h, and even more preferably in the range of 6,000 to 14,000 kg / h.

[0084] Furthermore, in cases where the preparation of the first feed stream in (i) includes (i.1), (i.2) and (i.3), it is preferable that the CO2-containing stream prepared in (i.2) has a temperature in the range of 25°C to 380°C, more preferably in the range of 40°C to 360°C, and even more preferably in the range of 60°C to 300°C.

[0085] Furthermore, in the case where the preparation of the first feed stream in (i) includes (i.1), (i.2) and (i.3), it is preferable that the CO2-containing stream prepared in (i.2) has a pressure in the range of 5 to 80 decibars, more preferably in the range of 35 to 60 decibars, and even more preferably in the range of 42 to 52 decibars.

[0086] Furthermore, in cases where the preparation of the first feed stream in (i) includes (i.1), (i.2), and (i.3), it is preferable that the CO2-containing stream prepared in (i.2) has a mass flow rate in the range of 100 to 20,000 kg / h, more preferably in the range of 3,000 to 17,000 kg / h, more preferably in the range of 5,000 to 15,000 kg / h, and even more preferably in the range of 6,000 to 14,000 kg / h.

[0087] Additionally, in cases where the preparation of the first feed stream in (i) includes (i.1), (i.2), and (i.3), it is preferable that the stream containing CO2 includes one or more of the following: CO2 recycled from (vii), CO2 recycled from (vii'), CO2 obtained from different methods for preparing syngas, CO2 obtained from a tank, and CO2 obtained from a pipeline from another device.

[0088] Preferably, the second feed stream prepared in (ii) comprises steam, wherein preparing the second feed stream in (ii) includes

[0089] (ii.1) Prepare a stream containing O2;

[0090] (ii.2) Prepare a stream containing steam;

[0091] (ii.3) The O2-containing stream obtained in (ii.1) and the steam-containing stream obtained in (ii.2) are mixed to obtain the second feed stream.

[0092] In the case where the second feed stream prepared in (ii) comprises steam, and where the preparation of the second feed stream in (ii) includes (ii.1), (ii.2) and (ii.3) as defined herein, it is preferred that the O2-containing stream prepared in (ii.1) has a temperature in the range of 25°C to 400°C, more preferably in the range of 60°C to 250°C, and even more preferably in the range of 120°C to 190°C.

[0093] Furthermore, in the case where the second feed stream prepared in (ii) comprises steam, and where the preparation of the second feed stream in (ii) includes (ii.1), (ii.2) and (ii.3) as defined herein, it is preferred that the O2-containing stream prepared in (ii.1) has a pressure in the range of 5 to 80 decibars, more preferably in the range of 35 to 60 decibars, and even more preferably in the range of 42 to 52 decibars.

[0094] Furthermore, in the case where the second feed stream prepared in (ii) comprises steam, and where the preparation of the second feed stream in (ii) includes (ii.1), (ii.2) and (ii.3) as defined herein, it is preferred that the O2-containing stream prepared in (ii.1) has a mass flow rate in the range of 100 to 20,000 kg / h, more preferably in the range of 3,000 to 17,000 kg / h, more preferably in the range of 5,000 to 15,000 kg / h, and more preferably in the range of 6,000 to 14,000 kg / h.

[0095] Furthermore, in the case where the second feed stream prepared in (ii) comprises steam, and where the preparation of the second feed stream in (ii) includes (ii.1), (ii.2) and (ii.3) as defined herein, it is preferred that the steam-containing stream prepared in (ii.2) has a temperature in the range of 200°C to 500°C, more preferably in the range of 300°C to 450°C, and even more preferably in the range of 350°C to 425°C.

[0096] Furthermore, in the case where the second feed stream prepared in (ii) comprises steam, and where the preparation of the second feed stream in (ii) includes (ii.1), (ii.2) and (ii.3) as defined herein, it is preferred that the steam-containing stream prepared in (ii.2) has a pressure in the range of 5 to 80 decibars, more preferably in the range of 35 to 60 decibars, and even more preferably in the range of 42 to 52 decibars.

[0097] Furthermore, in the case where the second feed stream prepared in (ii) comprises steam, and where the preparation of the second feed stream in (ii) includes (ii.1), (ii.2) and (ii.3) as defined herein, it is preferred that the steam-containing stream prepared in (ii.2) has a mass flow rate of less than 6,000 kg / h, more preferably less than 3,000 kg / h, more preferably less than 1,500 kg / h, and more preferably less than 1,000 kg / h.

[0098] Preferably, the molar ratio of CO2 contained in the product stream obtained in (iv) to the CO2 contained in the mixed stream obtained in (iii) (CO2 (product stream) : CO2 (mixed stream)) is less than 1 : 1.

[0099] Preferably, the product stream obtained in (iv) or the CO2-poor product stream obtained in (v) has a volume ratio of H2 to CO (H2:CO) in the range of 0.1:1 to 1.5:1, more preferably in the range of 0.3:1 to 1.3:1, and even more preferably in the range of 0.4:1 to 1.1:1.

[0100] The present invention further relates to a method, preferably according to the method described herein, the method comprising the following steps:

[0101] - To convert a product stream containing H2 and CO that is available or obtainable by the methods described herein, or a chemical material that is available or obtainable by the methods described herein, into a monomer, polymer, or polymer product.

[0102] In preferred embodiments, the monomer is a diol or polyol (preferably butanediol), an aldehyde (preferably formaldehyde), a diisocyanate or polyisocyanate (preferably methylene diphenyl diisocyanate (MDI)), a polymeric methylene diphenyl diisocyanate (pMDI), a toluene diisocyanate (TDI), a hexamethylene diisocyanate (HDI) or an isophorone diisocyanate (IPDI), an amide (preferably caprolactam), an olefin (preferably styrene, ethylene and norbornene), an alkyne, a (di) ester (preferably methyl methacrylate), a monoacid or diacid (preferably adipic acid or terephthalic acid), a diamine (preferably hexamethylenediamine, nonadiamine) or a sulfone (preferably 4,4'-dichlorodiphenyl sulfone).

[0103] In preferred embodiments, the polymer and / or polymer products include polyamide (PA) (preferably PA 6 or PA66), polyisocyanate addition polymers (preferably polyurethane (PU), thermoplastic polyurethane (TPU), polyurea or polyisocyanurate (PIR)), low-density polyethylene (LDPE), high-density polyethylene (HDPE), polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polyvinyl acetate (PVA), polystyrene (PS), polyacrylonitrile butadiene styrene (ABS), polystyrene acrylonitrile (SAN), polyacrylic acid styrene acrylonitrile (ASA), polytetrafluoroethylene (PTFE), poly(methyl acrylate) (PMA), poly(methyl methacrylate) (PMMA), polybutadiene (BR, PBD), poly(cis-1,4-isoprene), poly(trans-1,4-isoprene) -Isoprene), polyoxymethylene (POM), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polybutylene adipate (PBAT), polyester (PES), polyethersulfone (PESU), polyhydroxyalkanoate (PHA), poly-3-hydroxybutyrate (P3HB), poly-4-hydroxybutyrate (P4HB), polyhydroxyvalerate (PHV), polyhydroxyhexanoate (PHH), polyhydroxyoctanoate (PHO), polylactic acid (PLA), polysulfone (PSU), polyphenylene sulfone (PPSU), polycarbonate (PC), polyetheretherketone (PEEK), poly(p-phenylene oxide) (PPO), poly(p-phenylene ether) (PPE), or copolymers or mixtures thereof.

[0104] In a preferred embodiment, the polymer and / or the polymer product is one or more of the following:

[0105] - Automotive parts, preferably cylinder head covers, engine hoods, turbocharger housings, turbocharger baffles, intake pipes, intake manifolds, connectors, gears, fan wheels, coolant tanks, housings, heat exchanger housing parts, coolant coolers, turbocharger coolers, thermostats, water pumps, radiators, fasteners, battery system parts for electric vehicles, dashboards, steering column switches, seats, headrests, center consoles, transmission components, door modules, A, B, C, or D pillar covers, spoilers, door handles, exterior mirrors, windshield wipers, windshield wiper protection housings, decorative grilles, cover strips, roof rails, window frames, sunroof frames, antenna panels, headlights and taillights, engine hoods, cylinder head covers, intake manifolds, airbags, cushioning pads or coatings;

[0106] - Fabrics, preferably shirts, trousers, sweaters, boots, shoes, shoe soles, bodysuits or jackets;

[0107] - Electrical components, preferably electrical or electronic passive or active components, circuit boards, printed circuit boards, housing components, foil, wires, switches, plugs, sockets, distributors, relays, resistors, capacitors, inductors, spools, lamps, diodes, LEDs, transistors, connectors, voltage regulators, integrated circuits (ICs), processors, controllers, memory, sensors, microswitches, micro buttons, semiconductors, reflector housings for light-emitting diodes (LEDs), fasteners, gaskets, bolts, strips, slide-in guides, screws, nuts, membrane hinges, spring hooks (clamp-in) or spring tongues;

[0108] - Consumer goods, agricultural products, or pharmaceutical products, preferably tennis strings, climbing ropes, bristles, brushes, artificial turf, 3D printed filaments, lawnmowers, zippers, hook and loop fasteners, paper machine fabrics, extrusion coatings, fishing lines, fishing nets, offshore lines and ropes, vials, syringes, ampoules, bottles, sliding elements, spindle nuts, chain conveyors, sliding bearings, rollers, wheels, gears, ring gears, screws and spring dampers, hoses, pipes, cable sheaths, sockets, switches, cable ties, fan wheels, carpets, cosmetic boxes or bottles, mattresses, cushioning pads, insulating materials, detergents, dishwasher detergent blocks or powders, shampoos, shower gels, bath gels, soaps, fertilizers, fungicides, or pest control agents;

[0109] - For packaging in the food industry, single-layer or multi-layer blown film, cast film (single-layer or multi-layer), biaxial stretch film, or laminated film are preferred; or

[0110] - Structural components, preferably rotor blades, insulating materials, frames, housings, walls, coatings, or partition walls.

[0111] In preferred embodiments, the content of raw materials in the product stream, monomer, polymer, or polymer product containing H2 and CO is 1% by weight or more, preferably 2% by weight or more, more preferably 5% by weight or more, more preferably 15% by weight or more, more preferably 30% by weight or more, more preferably 40% by weight or more, more preferably 60% by weight or more, more preferably 80% by weight or more, more preferably 90% by weight or more, more preferably 95% by weight or more; and / or

[0112] The content of raw materials in the product stream, monomer, polymer, or polymer product containing H2 and CO is 100% by weight or less, preferably 95% by weight or less, more preferably 90% by weight or less, more preferably 50% by weight or less, more preferably 25% by weight or less, more preferably 10% by weight or less; and

[0113] Preferably, the content is determined based on identity preservation and / or segregation and / or mass balance and / or book and claim chain of custody models, preferably based on mass balance, and preferably based on the International Sustainability and Carbon Certification (ISCC) standard.

[0114] In a preferred embodiment, the content of C derived from a product stream containing H2 and CO in the monomer, polymer, or polymer product is 1 wt% or more (wherein C is calculated as an element), preferably 2 wt% or more, more preferably 5 wt% or more, more preferably 15 wt% or more, more preferably 30 wt% or more, more preferably 40 wt% or more, more preferably 60 wt% or more, more preferably 80 wt% or more, more preferably 90 wt% or more, more preferably 95 wt% or more; and / or

[0115] The content of C derived from product streams containing H2 and CO in the monomer, polymer, or polymer product is 100% by weight or less (wherein C is calculated as an element), preferably 95% by weight or less, more preferably 90% by weight or less, more preferably 50% by weight or less, more preferably 25% by weight or less, and more preferably 10% by weight or less; and

[0116] Preferably, the content is determined based on a source retention and / or separation and / or quality balance and / or certificate declaration chain of custody model, preferably based on quality balance, and preferably based on the International Sustainability and Carbon Certification (ISCC) standard.

[0117] The invention is further illustrated by the following set of embodiments and combinations of embodiments derived from the dependent relationships and reverse references shown. In particular, it should be noted that in each instance of reference to a series of embodiments, such as in the context of the term "method as described in any one of Embodiments 1 to 4," each embodiment in this series is intended to clearly disclose to those skilled in the art that the wording of this term should be understood by those skilled in the art to be synonymous with "method as described in any one of Embodiments 1, 2, 3, and 4." Furthermore, it should be clearly noted that the following set of embodiments represents appropriate structural portions of the general description of preferred aspects of the invention and therefore appropriately supports, but does not represent, the claims of the invention.

[0118] 1. A method for preparing syngas, the method comprising:

[0119] (i) Preparing a first feed stream comprising a liquid phase and a gas phase, wherein the liquid phase comprises one or more organic compounds, and wherein the gas phase comprises CO2;

[0120] (ii) Prepare a second feed stream containing O2 and optionally steam;

[0121] (iii) The first feed stream and the second feed stream are mixed to obtain a mixed feed stream;

[0122] (iv) React the mixed feed stream obtained in (iii) in a reaction zone to obtain a product stream containing H2 and CO, and optionally containing CO2, H2O, or CO2 and H2O.

[0123] The one or more organic compounds independently contain C, H, and optionally one or more of O, S, and N.

[0124] 2. The method as described in Example 1, wherein 90 to 100 wt% of, preferably 95 to 100 wt% of, one or more organic compounds contained in the liquid phase of the first feed stream prepared in (i) are composed of one or more of C, H, and optionally O, S and N.

[0125] 3. The method as described in Example 1 or 2, wherein 49.5 to 100 wt% of the one or more organic compounds, preferably 60 to 95 wt%, more preferably 70 to 95 wt%, is composed of C.

[0126] 4. The method as described in any one of Examples 1 to 3, wherein 0.5 to 12 wt% of the one or more organic compounds, preferably 2 to 11 wt%, more preferably 4 to 11 wt%, consists of H.

[0127] 5. The method as described in any one of Examples 1 to 4, wherein 0 to 50% by weight of the one or more organic compounds, preferably 0 to 40% by weight, more preferably 0 to 30% by weight, and even more preferably 0 to equal to or less than 20% by weight, consists of O.

[0128] 6. The method as described in any one of Examples 1 to 5, wherein 0 to 10 wt% of the one or more organic compounds, preferably 0 to 6 wt%, more preferably 0 to 4 wt%, consists of S.

[0129] 7. The method as described in any one of Examples 1 to 6, wherein 0 to 10 wt% of the one or more organic compounds, preferably 0 to 6 wt%, more preferably 0 to 4 wt%, consists of N.

[0130] 8. The method of any one of Examples 1 to 7, wherein the one or more organic compounds contained in the liquid phase are selected from the group consisting of: pyrolysis oil, heating oil, vacuum residue (preferably vacuum distillation residue), crude oil residue, heavy crude oil, extra-heavy crude oil, tar sands asphalt, bottom residue of a viscosity-reducing cracking unit, bottom residue of a deasphalting unit, C5 asphalt fraction (preferably C5 asphalt), high viscosity residue, bio-oil, fuel oil, pyrolysis gasoline, tire pyrolysis oil (TPO), waste oil, used oil, and mixtures thereof, wherein the one or more organic compounds are preferably pyrolysis oil.

[0131] 9. The method of Example 8, wherein the pyrolysis oils are preferably obtained from one or more of biomass, plastic waste, and mixed plastic waste, preferably mixed plastic waste, wherein the mixed plastic waste preferably comprises optionally shredded waste tires, and wherein the mixed plastic waste more preferably comprises one or more of the following: polyethylene, polypropylene, polyisoprene, polyethylene terephthalate, polystyrene, copolymers of one or more of these, block polymers of one or more of these, graft copolymers of one or more of these, and mixtures of two or more of these.

[0132] 10. The method as described in Example 8 or 9, wherein the heating oils are selected from the group consisting of: (C1-C1) 100 Hydrocarbons, preferably (C5-C) 80 Hydrocarbons, more preferably (C) 10 -C 60 Hydrocarbons, more preferably (C) 11 -C 40 Hydrocarbons, more preferably (C) 12 -C 25 Hydrocarbons, more preferably (C) 13 -C 21 Hydrocarbons, preferred (C) 14 -C 20 )hydrocarbon.

[0133] 11. The method as described in any one of Examples 8 to 10, wherein the heating oils have a boiling point in the range of 100°C to 1,000°C, preferably in the range of 150°C to 750°C, more preferably in the range of 200°C to 500°C, more preferably in the range of 225°C to 375°C, and even more preferably in the range of 250°C to 350°C (preferably at a pressure in the range of 0.99 to 1.01 bar).

[0134] 12. The method as described in any one of Examples 1 to 11, wherein the one or more organic compounds have a low calorific value in the range of 20 to 60 MJ / kg, preferably in the range of 30 to 50 MJ / kg.

[0135] 13. The method as described in any one of Examples 1 to 12, wherein 90 to 100 wt% of the gas phase contained in the first feed stream prepared in (i) is preferably 95 to 100 wt% and more preferably 99 to 100 wt% composed of CO2.

[0136] 14. The method of any one of Examples 1 to 13, wherein the first feed stream prepared in (i) has a weight ratio (organic compound:CO2) of one or more organic compounds to CO2 equal to or greater than 1:5, preferably in the range of 1:5 to 1,000:1, more preferably in the range of 1:5 to 500:1, more preferably in the range of 1:5 to 100:1, more preferably in the range of 1:5 to 50:1, preferably in the range of 1:1 to 25:1, more preferably in the range of 2:1 to 20:1, and more preferably in the range of 5:1 to 15:1.

[0137] 15. The method as described in any one of Examples 1 to 14, wherein 90 to 100 wt% of the first feed stream prepared in (i) is preferably 95 to 100 wt% and more preferably 99 to 100 wt% composed of the one or more organic compounds and CO2.

[0138] 16. The method of any one of Examples 1 to 15, wherein the first feed stream prepared in (i) exhibits a multiphase flow pattern, preferably a two-phase flow pattern.

[0139] 17. The method of any one of Examples 1 to 16, wherein the first feed stream prepared in (i) exhibits a dispersed flow pattern, a plunger flow pattern, a slug flow pattern, a wave flow pattern, a stratified flow pattern, an annular flow pattern or a mist flow pattern, preferably a dispersed flow pattern, wherein the first feed stream prepared in (i) preferably exhibits a horizontal flow pattern.

[0140] 18. The method of any one of Examples 1 to 16, wherein the first feed stream prepared in (i) exhibits an agitated flow, an annular flow, a bubbly flow, a slag-like flow, or a mist-like flow, preferably an annular flow or a mist-like flow, more preferably a mist-like flow, wherein the first feed stream prepared in (i) preferably exhibits vertical flow.

[0141] 19. The method of any one of Examples 1 to 18, wherein the liquid phase of the first feed stream prepared in (i) has a viscosity in the range of 20 to 6,000 mPas, preferably in the range of 100 to 5,000 mPas, wherein the viscosity is preferably determined according to Reference Example 1.

[0142] 20. The method of any one of Examples 1 to 19, wherein the first feed stream prepared in (i) has a temperature in the range of 50°C to 220°C, preferably in the range of 80°C to 190°C, and more preferably in the range of 110°C to 160°C.

[0143] 21. The method of any one of Examples 1 to 20, wherein the first feed stream prepared in (i) has a pressure in the range of 5 to 80 bar, preferably in the range of 35 to 60 bar, and more preferably in the range of 42 to 52 bar.

[0144] 22. The method of any one of Examples 1 to 21, wherein the first feed stream prepared in (i) has a mass flow rate in the range of 100 to 20,000 kg / h, preferably in the range of 3,000 to 17,000 kg / h, more preferably in the range of 5,000 to 15,000 kg / h, and even more preferably in the range of 6,000 to 14,000 kg / h.

[0145] 23. The method as described in any one of Examples 1 to 22, wherein 90 to 100 wt% of the second feed stream prepared in (ii) is composed of O2, more preferably 95 to 100 wt% and more preferably 99 to 100 wt%.

[0146] 24. The method of any one of Examples 1 to 23, wherein the second feed stream prepared in (ii) comprises steam, wherein the second feed stream prepared in (ii) preferably has a weight ratio (O2 : steam) of O2 calculated as elemental O2 to steam calculated as H2O in the range of 1 : 10 to 100 : 1, preferably in the range of 1 : 1 to 61 : 1.

[0147] 25. The method of any one of Examples 1 to 24, wherein the second feed stream prepared in (ii) has a temperature in the range of 25°C to 400°C, preferably in the range of 50°C to 300°C, and more preferably in the range of 90°C to 250°C.

[0148] 26. The method of any one of Examples 1 to 25, wherein the second feed stream prepared in (ii) has a pressure in the range of 5 to 80 bar, preferably in the range of 35 to 60 bar, and more preferably in the range of 40 to 52 bar.

[0149] 27. The method of any one of Examples 1 to 26, wherein the second feed stream prepared in (ii) has a mass flow rate in the range of 100 to 20,000 kg / h, preferably in the range of 3,000 to 17,000 kg / h, more preferably in the range of 5,000 to 15,000 kg / h, and even more preferably in the range of 6,000 to 14,000 kg / h.

[0150] 28. The method of any one of Examples 1 to 27, wherein the mixing in (iii) is carried out by spraying the first feed stream and the second feed stream, droplets forming the liquid phase, and optionally liquid fragments.

[0151] 29. The method as described in any one of Examples 1 to 28, wherein the mixing in (iii) includes

[0152] (iii.1) Preferably, the first feed stream and the second feed stream are mixed in a mixing chamber to obtain a mixed feed stream;

[0153] (iii.2) The mixed feed stream obtained in (iii.1) will be fed into the reaction zone.

[0154] 30. The method as described in Example 29, wherein the mixing in (iii.1) is carried out by spraying the mixing feed stream, forming droplets of the liquid phase, and optionally liquid fragments.

[0155] 31. The method as described in Example 29 or 30, wherein the mixed feed stream is fed into the reaction zone by spraying the mixed feed stream, forming droplets of the liquid phase, and optionally liquid fragments.

[0156] 32. The method as described in Example 30 or 31, wherein spraying comprises applying to an area of ​​100 to 1500 m. 3 Within the range of / h, preferably between 200 and 1000 m 3 The flow rate of this mixed feed stream within the range of / h.

[0157] 33. The method as described in any one of Examples 1 to 32, preferably as described in any one of Examples 28 to 32, wherein the mixed feed stream obtained in (iii) exhibits a multiphase flow pattern, preferably a two-phase flow pattern.

[0158] 34. The method as described in any one of Examples 1 to 33, preferably as described in Example 33, wherein the mixed feed flow obtained in (iii) exhibits a dispersed flow pattern, a plunger flow pattern, a slug flow pattern, a wave flow pattern, a stratified flow pattern, an annular flow pattern, or a mist flow pattern, preferably a dispersed flow pattern, wherein the mixed feed flow obtained in (iii) preferably exhibits a horizontal flow pattern.

[0159] 35. The method as described in any one of Examples 1 to 33, preferably as described in Example 33, wherein the mixed feed stream obtained in (iii) exhibits an agitated flow, an annular flow, a bubbly flow, a slag-like flow, or a mist-like flow, preferably an annular flow or a mist-like flow, more preferably a mist-like flow, wherein the mixed feed stream obtained in (iii) preferably exhibits vertical flow.

[0160] 36. The method of any one of Examples 1 to 35, wherein the mixed feed stream obtained in (iii) has a weight ratio of one or more organic compounds to O2 (organic compound: O2) in the range of 0.10:1 to 2.00:1, preferably in the range of 0.25:1 to 1.50:1.

[0161] 37. The method of any one of Examples 1 to 36, wherein the mixed feed stream obtained in (iii) has a CO2 to O2 weight ratio (CO2:O2) in the range of 1:500 to 1:10, preferably in the range of 1:100 to 1:5.0, more preferably in the range of 1:75 to 1:2.0, and even more preferably in the range of 1:50 to 1:1.5.

[0162] 38. The method of any one of Examples 1 to 37, wherein the mixed feed stream obtained in (iii) has a weight ratio (organic compound: steam) of the one or more organic compounds to steam in the range of 1:1 to 100:1, preferably in the range of 5:1 to 50:1, more preferably in the range of 7:1 to 41:1, and even more preferably in the range of 20:1 to 25:1.

[0163] 39. The method as described in any one of Examples 1 to 38, wherein the reaction in (iv) is carried out at a temperature in the range of 1100°C to 1500°C, preferably in the range of 1200°C to 1450°C, and more preferably in the range of 1225°C to 1425°C.

[0164] 40. The method as described in any one of Examples 1 to 39, wherein the reaction in (iv) is carried out by vaporization, preferably entrained vaporization (German "Flugstromvergasung").

[0165] 41. The method of any one of Examples 1 to 40, wherein in (iv), the mixed feed stream exhibits a retention time in the reaction zone in the range of 1 to 10 s.

[0166] 42. The method of any one of Examples 1 to 41, wherein the product stream obtained in (iv) contains a mole fraction of CO in the range of 0.30 to 0.95, preferably in the range of 0.40 to 0.90, more preferably in the range of 0.45 to 0.88.

[0167] 43. The method of any one of Examples 1 to 42, wherein the product stream obtained in (iv) contains a mole fraction of H2 in the range of 0.05 to 0.60, preferably in the range of 0.10 to 0.50, more preferably in the range of 0.20 to 0.50.

[0168] 44. The method as described in any one of Examples 1 to 43, further comprising, after (iv)

[0169] (v) Separate CO2 from the product stream obtained in (iv) to obtain a CO2-containing stream and a CO2-lean product stream.

[0170] 45. The method as described in Example 44, wherein CO2 separation is performed by a CO2 scrubber or by CO2 absorption.

[0171] 46. ​​The method as described in Example 44 or 45, further comprising, after (v)

[0172] (vi) The CO2-containing flow obtained in compression (v) is preferably compressed to a pressure in the range of 5 to 80 decibars, preferably in the range of 35 to 60 decibars, and more preferably in the range of 42 to 52 decibars.

[0173] 47. The method as described in any one of Examples 44 to 46, further comprising, after (v) and preferably after (vi)

[0174] (vii) The CO2-containing stream obtained in (v) or (vi) is recycled to the first feed stream prepared in (i).

[0175] 48. The method as described in Example 47, wherein 1 to 100% by weight, preferably 25 to 75% by weight, and more preferably 40 to 60% by weight of CO2 contained in the first feed stream prepared in (i) consists of recycled CO2 from the CO2-containing stream obtained in (v) or (vi).

[0176] 49. The method as described in any one of Examples 44 to 46, further comprising, after (v) and preferably after (vi)

[0177] (vii') The CO2-containing stream obtained in (v) or (vi) is recycled to the first feed stream prepared in (i), wherein the weight ratio of the CO2 recycled to the first feed stream to the CO2 contained in the first feed stream prepared in (i) is in the range of 1:1 to 5:1, preferably in the range of 1:1 to 2:1, and more preferably in the range of 1:1 to 1.5:1.

[0178] 50. The method as described in Example 49, wherein 1 to 100% by weight, preferably 25 to 75% by weight, and more preferably 40 to 60% by weight of the CO2 recycled to the first feed stream obtained from (vii') consists of recycled CO2 from the CO2-containing stream obtained from (v) or (vi).

[0179] 51. The method as described in any one of Examples 1 to 50, further comprising, after (iv) and preferably after (v)

[0180] (viii) Add H2 to the product stream obtained in (iv) or to the CO2-poor product stream obtained in (v).

[0181] 52. The method as described in Example 51, wherein the H2 added to the product stream obtained in (iv) or to the CO2-poor product stream obtained in (v) comprises one or more of the following: H2 obtained from a pipeline, H2 obtained from a tank, H2 obtained from a different method (preferably H2 obtained from a method for preparing styrene), and H2 obtained from electrolysis (preferably H2 obtained from electrolysis using green energy).

[0182] 53. The method as described in any one of Examples 1 to 52, wherein preparing the first feed stream in (i) includes

[0183] (i.1) Preparing a stream containing one or more organic compounds;

[0184] (i.2) Prepare a stream containing CO2;

[0185] (i.3) The stream containing one or more organic compounds obtained in (i.1) and the stream containing CO2 obtained in (i.2) are mixed to obtain the first feed stream.

[0186] 54. The method as described in Example 53, wherein the stream containing one or more organic compounds prepared in (i.1) has a temperature in the range of 10°C to 350°C, preferably in the range of 25°C to 300°C, more preferably in the range of 50°C to 200°C, and even more preferably in the range of 70°C to 150°C.

[0187] 55. The method as described in Example 53 or 54, wherein the stream containing one or more organic compounds prepared in (i.1) has a pressure in the range of 5 to 80 decibars, preferably in the range of 35 to 60 decibars, and more preferably in the range of 42 to 52 decibars.

[0188] 56. The method of any one of Examples 53 to 55, wherein the stream containing one or more organic compounds prepared in (i.1) has a mass flow rate in the range of 100 to 20,000 kg / h, preferably in the range of 3,000 to 17,000 kg / h, more preferably in the range of 5,000 to 15,000 kg / h, and even more preferably in the range of 6,000 to 14,000 kg / h.

[0189] 57. The method of any one of Examples 53 to 56, wherein the CO2-containing stream prepared in (i.2) has a temperature in the range of 25°C to 380°C, preferably in the range of 40°C to 360°C, and more preferably in the range of 60°C to 300°C.

[0190] 58. The method of any one of Examples 53 to 57, wherein the CO2-containing stream prepared in (i.2) has a pressure in the range of 5 to 80 decibars, preferably in the range of 35 to 60 decibars, and more preferably in the range of 42 to 52 decibars.

[0191] 59. The method of any one of Examples 53 to 58, wherein the CO2-containing stream prepared in (i.2) has a mass flow rate in the range of 100 to 20,000 kg / h, preferably in the range of 3,000 to 17,000 kg / h, more preferably in the range of 5,000 to 15,000 kg / h, and even more preferably in the range of 6,000 to 14,000 kg / h.

[0192] 60. The method of any one of Examples 53 to 59, wherein the CO2-containing stream comprises one or more of the following: CO2 recycled from (vii), CO2 recycled from (vii'), CO2 obtained from different methods for preparing syngas, CO2 obtained from a tank, and CO2 obtained from a pipeline from another device.

[0193] 61. The method of any one of Examples 1 to 60, wherein the second feed stream prepared in (ii) comprises steam, wherein preparing the second feed stream in (ii) includes

[0194] (ii.1) Prepare a stream containing O2;

[0195] (ii.2) Prepare a stream containing steam;

[0196] (ii.3) The O2-containing stream obtained in (ii.1) and the steam-containing stream obtained in (ii.2) are mixed to obtain the second feed stream.

[0197] 62. The method as described in Example 61, wherein the O2-containing stream prepared in (ii.1) has a temperature in the range of 25°C to 400°C, preferably in the range of 60°C to 250°C, and more preferably in the range of 120°C to 190°C.

[0198] 63. The method as described in Example 61 or 62, wherein the O2-containing flow prepared in (ii.1) has a pressure in the range of 5 to 80 decibars, preferably in the range of 35 to 60 decibars, and more preferably in the range of 42 to 52 decibars.

[0199] 64. The method of any one of Examples 61 to 63, wherein the O2-containing flow prepared in (ii.1) has a mass flow rate in the range of 100 to 20,000 kg / h, preferably in the range of 3,000 to 17,000 kg / h, more preferably in the range of 5,000 to 15,000 kg / h, and even more preferably in the range of 6,000 to 14,000 kg / h.

[0200] 65. The method of any one of Examples 61 to 64, wherein the steam-containing stream prepared in (ii.2) has a temperature in the range of 200°C to 500°C, preferably in the range of 300°C to 450°C, and more preferably in the range of 350°C to 425°C.

[0201] 66. The method of any one of Examples 61 to 65, wherein the steam-containing flow prepared in (ii.2) has a pressure in the range of 5 to 80 decibars, preferably in the range of 35 to 60 decibars, and more preferably in the range of 42 to 52 decibars.

[0202] 67. The method of any one of Examples 61 to 66, wherein the steam-containing flow prepared in (ii.2) has a mass flow rate of less than 6,000 kg / h, preferably less than 3,000 kg / h, more preferably less than 1,500 kg / h, and even more preferably less than 1,000 kg / h.

[0203] 68. The method of any one of Examples 1 to 67, wherein the molar ratio of CO2 contained in the product stream obtained in (iv) to the CO2 contained in the mixed stream obtained in (iii) (CO2 (product stream) : CO2 (mixed stream)) is less than 1 : 1.

[0204] 69. The method as described in any one of Examples 1 to 68, wherein the product stream obtained in (iv) or the CO2-poor product stream obtained in (v) has a volume ratio of H2 to CO (H2:CO) in the range of 0.1:1 to 1.5:1, preferably in the range of 0.3:1 to 1.3:1, and more preferably in the range of 0.4:1 to 1.1:1.

[0205] 70. The method as described in any one of Examples 1 to 69, comprising the following steps after (iv), preferably after (v), more preferably after (vi), more preferably after (vii), and more preferably after (viii):

[0206] (ix) The conversion of a product stream containing H2 and CO that can be obtained or obtained by any of the methods described in any of Examples 1 to 69, or a chemical material that can be obtained or obtained by any of the methods described in any of Examples 1 to 69, to obtain a monomer, polymer, or polymer product.

[0207] 71. The method as described in Example 70, wherein the monomer is a diol or polyol (preferably butanediol), an aldehyde (preferably formaldehyde), a diisocyanate or polyisocyanate (preferably methylene diphenyl diisocyanate (MDI), polymeric methylene diphenyl diisocyanate (pMDI), toluene diisocyanate (TDI), hexamethylene diisocyanate (HDI) or isophorone diisocyanate (IPDI)), an amide (preferably caprolactam), an olefin (preferably styrene, ethylene and norbornene), an alkyne, a (di) ester (preferably methyl methacrylate), a monoacid or diacid (preferably adipic acid or terephthalic acid), a diamine (preferably hexamethylenediamine, nonanediamine) or a sulfone (preferably 4,4'-dichlorodiphenyl sulfone).

[0208] 72. The method as described in Example 70 or 71, wherein the polymer and / or the polymer product comprises polyamide (PA), preferably PA 6 or PA 66; a polyisocyanate addition polymer, preferably polyurethane (PU), thermoplastic polyurethane (TPU), polyurea or polyisocyanurate (PIR); low-density polyethylene (LDPE), high-density polyethylene (HDPE), polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polyvinyl acetate (PVA), polystyrene (PS), polyacrylonitrile butadiene styrene (ABS), polystyrene acrylonitrile (SAN), polyacrylate styrene acrylonitrile polyacrylate (ASA), polytetrafluoroethylene (PTFE), poly(methyl acrylate) (PMA), poly(methyl methacrylate) (PMMA), polybutadiene (BR, PBD), poly(cis-1,4-isoprene), poly(trans-1,4-isoprene) Diene, polyoxymethylene (POM), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polybutylene adipate (PBAT), polyester (PES), polyethersulfone (PESU), polyhydroxyalkanoate (PHA), poly-3-hydroxybutyrate (P3HB), poly-4-hydroxybutyrate (P4HB), polyhydroxyvalerate (PHV), polyhydroxyhexanoate (PHH), polyhydroxyoctanoate (PHO), polylactic acid (PLA), polysulfone (PSU), polyphenylene sulfone (PPSU), polycarbonate (PC), polyetheretherketone (PEEK), poly(p-phenylene oxide) (PPO), poly(p-phenylene ether) (PPE); or copolymers or mixtures thereof.

[0209] 73. The method of any one of Examples 70 to 72, wherein the polymer and / or the polymer product is one or more of the following:

[0210] - Automotive parts, preferably cylinder head covers, engine hoods, turbocharger housings, turbocharger baffles, intake pipes, intake manifolds, connectors, gears, fan wheels, coolant tanks, housings, heat exchanger housing parts, coolant coolers, turbocharger coolers, thermostats, water pumps, radiators, fasteners, battery system parts for electric vehicles, dashboards, steering column switches, seats, headrests, center consoles, transmission components, door modules, A, B, C, or D pillar covers, spoilers, door handles, exterior mirrors, windshield wipers, windshield wiper protection housings, decorative grilles, cover strips, roof rails, window frames, sunroof frames, antenna panels, headlights and taillights, engine hoods, cylinder head covers, intake manifolds, airbags, cushioning pads or coatings;

[0211] - Fabrics, preferably shirts, trousers, sweaters, boots, shoes, shoe soles, bodysuits or jackets;

[0212] - Electrical components, preferably electrical or electronic passive or active components, circuit boards, printed circuit boards, housing components, foil, wires, switches, plugs, sockets, distributors, relays, resistors, capacitors, inductors, spools, lamps, diodes, LEDs, transistors, connectors, voltage regulators, integrated circuits (ICs), processors, controllers, memory, sensors, microswitches, micro buttons, semiconductors, reflector housings for light-emitting diodes (LEDs), fasteners, gaskets, bolts, strips, slide-in guides, screws, nuts, membrane hinges, spring hooks (clamp-in) or spring tongues;

[0213] - Consumer goods, agricultural products, or pharmaceutical products, preferably tennis strings, climbing ropes, bristles, brushes, artificial turf, 3D printed filaments, lawnmowers, zippers, hook and loop fasteners, paper machine fabrics, extrusion coatings, fishing lines, fishing nets, offshore lines and ropes, vials, syringes, ampoules, bottles, sliding elements, spindle nuts, chain conveyors, sliding bearings, rollers, wheels, gears, ring gears, screws and spring dampers, hoses, pipes, cable sheaths, sockets, switches, cable ties, fan wheels, carpets, cosmetic boxes or bottles, mattresses, cushioning pads, insulating materials, detergents, dishwasher detergent blocks or powders, shampoos, shower gels, bath gels, soaps, fertilizers, fungicides, or pest control agents;

[0214] - For packaging in the food industry, single-layer or multi-layer blown film, cast film (single-layer or multi-layer), biaxial stretch film, or laminated film are preferred; or

[0215] - Structural components, preferably rotor blades, insulating materials, frames, housings, walls, coatings, or partition walls.

[0216] 74. The method as described in any one of Examples 70 to 73, wherein the content of the raw materials in the product stream, monomer, polymer, or polymer product containing H2 and CO is 1 wt% or more, preferably 2 wt% or more, more preferably 5 wt% or more, more preferably 15 wt% or more, more preferably 30 wt% or more, more preferably 40 wt% or more, more preferably 60 wt% or more, more preferably 80 wt% or more, more preferably 90 wt% or more, more preferably 95 wt% or more; and / or

[0217] The content of raw materials in the product stream, monomer, polymer, or polymer product containing H2 and CO is 100% by weight or less, preferably 95% by weight or less, more preferably 90% by weight or less, more preferably 50% by weight or less, more preferably 25% by weight or less, and more preferably 10% by weight or less; and

[0218] Preferably, the content is determined based on a source retention and / or separation and / or quality balance and / or certificate declaration chain of custody model, preferably based on quality balance, and preferably based on the International Sustainability and Carbon Certification (ISCC) standard.

[0219] 75. The method as described in any one of Examples 70 to 73, wherein the content of C derived from the product stream containing H2 and CO contained in the monomer, polymer, or polymer product is 1 wt% or more (wherein C is calculated as an element), preferably 2 wt% or more, more preferably 5 wt% or more, more preferably 15 wt% or more, more preferably 30 wt% or more, more preferably 40 wt% or more, more preferably 60 wt% or more, more preferably 80 wt% or more, more preferably 90 wt% or more, more preferably 95 wt% or more; and / or

[0220] The content of carbon (C) derived from the product stream containing H2 and CO in the monomer, polymer, or polymer product is 100% by weight or less (wherein C is calculated as an element), preferably 95% by weight or less, more preferably 90% by weight or less, more preferably 50% by weight or less, more preferably 25% by weight or less, and more preferably 10% by weight or less; and

[0221] Preferably, the content is determined based on a source retention and / or separation and / or quality balance and / or certificate declaration chain of custody model, preferably based on quality balance, and preferably based on the International Sustainability and Carbon Certification (ISCC) standard.

[0222] The unit absolute bar refers to 10 5 Pa is the absolute pressure.

[0223] The invention is further illustrated by the following examples. Example

[0224] Reference Example 1: Determination of Liquid Phase Viscosity

[0225] Viscosity was measured at 20°C using a “Brookfield RV” laboratory viscometer according to the standard method DIN EN ISO 3219:1994, which uses a No. 4 or No. 5 rotor at a speed of 100 revolutions per minute.

[0226] Comparison of Example 0 and Examples 1-5: Methods for preparing syngas

[0227] The method for preparing syngas was simulated using Aspen (Aspen version V14). To prepare the first feed stream according to the invention, a feed stream containing organic compounds was mixed with a feed stream containing CO2.

[0228] Set the conditions as described in Table 1-3 below. Set the pressure of the high vacuum residue stream, CO2 stream, steam stream of the first feed stream, O2 stream, steam stream of the second feed stream, and the pressure of the first and second feed streams to 47 bar independently.

[0229] The prepared streams are mixed and then subjected to a gasification reaction.

[0230] Table 1.

[0231] Compare the settings of Example 0 with those of Examples 1-5.

[0232]

[0233] Table 2.

[0234] Compare the settings of Example 6 and Example 7-11.

[0235]

[0236] Table 3.

[0237] The settings for Examples 12-14.

[0238]

[0239] Table 4.

[0240] The settings for Examples 15-16 and Comparative Example 17.

[0241]

[0242] In Examples 15 and 16, the weight ratios of organic matter to CO2 in the first feed stream were 47 and 0.22, respectively.

[0243] In Comparative Example 17, the weight ratio of organic matter to CO2 in the first feed stream was 0.18. Due to the CO2, the flame could not develop, and therefore no gasification reaction occurred. Consequently, the simulation could not run because the necessary temperature in the reactor was not reached. Therefore, no results were obtained for Comparative Example 17.

[0244] As can be seen from the results, a method for preparing syngas can be provided in which the amount of steam can be reduced. Furthermore, the method according to the invention recycles CO2. In particular, the recycled CO2 can be used to spray the liquid feed stream. Therefore, syngas with a relatively high CO content can be prepared according to the invention. In addition, it has been found that by recycling CO2, mass leveling can be achieved, resulting in a steady-state process. References

[0245] -WO 2015 / 090575 A1

[0246] -WO 2022 / 200532 A1

[0247] -US 10435295

[0248] -US 2016 / 0362355 A1

[0249] -WO 2021 / 180482 A1

[0250] -US 2022 / 234889 A1

[0251] -EP 3878807 A1。

Claims

1. A method for preparing syngas, the method comprising: (i) A first feed stream comprising a liquid phase and a gas phase is prepared, wherein the liquid phase comprises one or more organic compounds and wherein the gas phase comprises CO2, wherein the first feed stream prepared in (i) has a weight ratio of the one or more organic compounds to CO2 equal to or greater than 1:5 — organic compounds: CO2; (ii) Prepare a second feed stream containing O2 and optionally steam; (iii) The first feed stream and the second feed stream are mixed to obtain a mixed feed stream; (iv) React the mixed feed stream obtained in (iii) in a reaction zone to obtain a product stream containing H2 and CO, and optionally containing CO2, H2O, or CO2 and H2O. The one or more organic compounds independently contain C, H, and optionally one or more of O, S, and N.

2. The method of claim 1, wherein, The one or more organic compounds contained in the liquid phase are selected from the group consisting of: pyrolysis oil, heating oil, vacuum residue, crude oil residue, heavy crude oil, extra-heavy crude oil, tar sand asphalt, bottom residue of a viscosity-reducing cracking unit, bottom residue of a deasphalting unit, C5 asphalt fraction, high viscosity residue, bio-oil, fuel oil, pyrolysis gasoline, tire pyrolysis oil (TPO), waste oil, used oil, and mixtures thereof.

3. The method of claim 1 or 2, wherein, The first feed stream prepared in (i) has a weight ratio of one or more organic compounds to CO2 in the range of 1:5 to 1,000:1—organic compound:CO2.

4. The method of any one of claims 1 to 3, wherein, The first feed stream prepared in (i) has a temperature in the range of 50°C to 220°C.

5. The method of any one of claims 1 to 4, wherein, The first feed stream prepared in (i) has a pressure in the range of 5 to 80 bar.

6. The method of any one of claims 1 to 5, wherein, The second feed stream prepared in (ii) has a temperature in the range of 25°C to 400°C.

7. The method of any one of claims 1 to 6, wherein, The second feed stream prepared in (ii) has a pressure in the range of 5 to 80 bar.

8. The method of any one of claims 1 to 7, wherein, The mixing in (iii) is carried out by spraying the first feed stream and the second feed stream, forming droplets of the liquid phase and optionally liquid fragments.

9. The method of any one of claims 1 to 8, wherein, The mixed feed stream obtained in (iii) has a weight ratio of one or more organic compounds to O2 in the range of 0.10:1 to 2.00:1 – organic compound: O2.

10. The method of any one of claims 1 to 9, wherein, The mixed feed stream obtained in (iii) has a CO2 to O2 weight ratio in the range of 1:500 to 1:10 — CO2 : O2.

11. The method of any one of claims 1 to 10, wherein, The reaction in (iv) was carried out at a temperature ranging from 1100°C to 1500°C.

12. The method of any one of claims 1 to 11, wherein, The reaction in (iv) is carried out by vaporization.

13. The method according to any one of claims 1 to 12, further comprising, after (iv) (v) Separate CO2 from the product stream obtained in (iv) to obtain a CO2-containing stream and a CO2-lean product stream.

14. The method of claim 13, further comprising, after (v) (vi) Compress the CO2-containing stream obtained from (v).

15. The method of claim 13 or 14, further comprising, after (v) (vii) The CO2-containing stream obtained in (v) or (vi) is recycled to the first feed stream prepared in (i).

16. The method of any one of claims 1 to 15, wherein after (iv) it comprises the following steps: (ix) Transformation of a product stream containing H2 and CO that is obtainable or acquireable by any one of the methods of claims 1 to 15 or a chemical material that is obtainable or acquireable by any one of the methods of claims 1 to 15 to obtain a monomer, polymer or polymer product.

17. The method of claim 16, wherein, The monomer is a diol or polyol, aldehyde, diisocyanate or polyisocyanate, polymethylene diphenyl diisocyanate (pMDI), toluene diisocyanate (TDI), hexamethylene diisocyanate (HDI) or isophorone diisocyanate (IPDI), amide, olefin, ethylene and norbornene, alkyne, (di) ester, monoacid or diacid, diamine, nonadiamine, or sulfone.

18. The method of claim 16 or 17, wherein, The polymer and / or polymer products include polyamide (PA), polyisocyanate addition polymers, thermoplastic polyurethane (TPU), polyurea or polyisocyanurate (PIR), low-density polyethylene (LDPE), high-density polyethylene (HDPE), polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polyvinyl acetate (PVA), polystyrene (PS), polyacrylonitrile butadiene styrene (ABS), polystyrene acrylonitrile (SAN), polyacrylic acid styrene acrylonitrile (ASA), polytetrafluoroethylene (PTFE), poly(methyl acrylate) (PMA), poly(methyl methacrylate) (PMMA), polybutadiene (BR, PBD), poly(cis-1,4-isoprene), poly(trans- 1,4-Isoprene), polyoxymethylene (POM), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polybutylene adipate (PBAT), polyester (PES), polyethersulfone (PESU), polyhydroxyalkanoate (PHA), poly-3-hydroxybutyrate (P3HB), poly-4-hydroxybutyrate (P4HB), polyhydroxyvalerate (PHV), polyhydroxyhexanoate (PHH), polyhydroxyoctanoate (PHO), polylactic acid (PLA), polysulfone (PSU), polyphenylene sulfone (PPSU), polycarbonate (PC), polyetheretherketone (PEEK), poly(p-phenylene oxide) (PPO), poly(p-phenylene ether) (PPE), or copolymers or mixtures thereof.

19. The method according to any one of claims 16 to 18, wherein, The polymer and / or the polymer product is one or more of the following: - Automotive parts, engine hoods, supercharged air cooler housings, supercharged air cooler baffles, intake pipes, intake manifolds, connectors, gears, fan wheels, coolant tanks, housings, heat exchanger housing parts, coolant coolers, supercharged air coolers, thermostats, water pumps, radiators, fasteners, battery system parts for electric vehicles, dashboards, steering column switches, seats, headrests, center consoles, transmission components, door modules, A, B, C, or D pillar covers, spoilers, door handles, exterior mirrors, windshield wipers, windshield wiper protection housings, decorative grilles, cover strips, roof rails, window frames, sunroof frames, antenna panels, headlights and taillights, engine hoods, cylinder head covers, intake manifolds, airbags, cushioning pads or coatings; - Fabric, trousers, sweaters, boots, shoes, soles, bodysuits or jackets; - Electrical components, circuit boards, printed circuit boards, housing components, foil, wire, switches, plugs, sockets, distributors, relays, resistors, capacitors, inductors, spools, lamps, diodes, LEDs, transistors, connectors, voltage regulators, integrated circuits (ICs), processors, controllers, memory, sensors, microswitches, microbuttons, semiconductors, reflector housings for light-emitting diodes (LEDs), fasteners, gaskets, bolts, strips, slide-in guides, screws, nuts, membrane hinges, spring hooks (clamp-in) or spring tongues; - Consumer goods, agricultural or pharmaceutical products, climbing ropes, bristles, brushes, artificial turf, 3D printed filaments, lawnmowers, zippers, hook and loop fasteners, paper machine fabrics, extrusion coatings, fishing lines, fishing nets, offshore lines and ropes, vials, syringes, ampoules, bottles, sliding elements, spindle nuts, chain conveyors, sliding bearings, rollers, wheels, gears, ring gears, screws and spring dampers, hoses, pipes, cable sheaths, sockets, switches, cable ties, fan wheels, carpets, cosmetic boxes or bottles, mattresses, cushioning pads, insulation materials, detergents, dishwasher detergent blocks or powders, shampoos, shower gels, bath gels, soaps, fertilizers, fungicides, or pest control agents; - Packaging for the food industry, including cast films (single or multilayer), biaxially stretched films, or laminated films; or - Structural components, insulation materials, frames, shells, walls, coatings, or partition walls.

20. The method according to any one of claims 16 to 19, wherein, The content of C derived from the product stream containing H2 and CO in the monomer, polymer, or polymer product is 1% by weight or more, and / or The content of C derived from the product stream containing H2 and CO contained in the monomer, polymer, or polymer product is 100% by weight or less.

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