# US 10,308,877 B2 · Process for production of aromatics via pyrolysis of lignin-comprising material

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- Number: US 10,308,877 B2
- Document ID: US10308877B2
- Status: Granted
- Kind: B2
- Application number: 15/540,401
- Filed: 2015-12-24
- Published: 2017-12-28
- Granted: 2019-06-04
- Earliest claimed: 2014-12-29
- Assignees: Shell Oil Company
- Applicants: Shell Oil Company
- Inventors: Colin John Schaverien; Yunming Fang
- Web page: https://patentgrep.com/patent/US10308877B2

## CPC

- C10G 1/02: by distillation
- B01J 29/405: {containing rare earth elements, titanium, zirconium, hafnium, zinc, cadmium, mercury, gallium, indium, thallium, tin or lead}
- C10B 49/10: according to the "fluidised bed" technique
- C10B 49/22: according to the "fluidised bed" technique
- C10B 53/02: of cellulose-containing material (production of pyroligneous acid C10C5/00)
- C10B 57/06: containing additives
- C10G 3/49: {containing crystalline aluminosilicates, e.g. molecular sieves}
- C10G 9/32: according to the "fluidised-bed" technique
- C10K 3/02: by catalytic treatment
- C10G 2300/1014: of vegetal origin
- C10G 2300/202: Heteroatoms content, i.e. S, N, O, P
- C10G 2400/30: Aromatics
- Y02E 50/10: Biofuels, e.g. bio-diesel
- Y02P 30/20: using bio-feedstock
- C10G: CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION (cracking to hydrogen or synthesis gas C01B; cracking or pyrolysis of hydrocarbon gases to individual hydrocarbons or mixtures thereof of definite or specified constitution C07C; cracking to cokes C10B); RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- C10B: DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS (cracking oils C10G; underground gasification of minerals E21B43/295)
- C10K: PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

This invention relates to a process for the conversion of a feedstock comprising a lignin-comprising material, comprising the steps (a) to (c): (a) charging the feedstock to a fluidized bed reactor; (b) pyrolyzing at least part of the feedstock in the fluidized bed reactor while introducing a carrier gas into the reactor, to produce pyrolysis vapors; (c) reacting at least part of the pyrolysis vapors coming from step (b) in a second reactor comprising a catalyst, to produce hydrocarbon products comprising aromatics.

## Claims

### Claim 1

A process for the conversion of a feedstock comprising a lignin-comprising material, the process comprising:
(a) charging the feedstock to a fluidized bed reactor comprising a heat carrier, wherein the heat carrier comprises sand;
(b) pyrolyzing at least part of the feedstock in the fluidized bed reactor to produce pyrolysis vapours while introducing a carrier gas into the reactor,
wherein the carrier gas comprises nitrogen and at least one of a C3 alkane and a C4 alkane; and
(c) reacting at least part of the pyrolysis vapours coming from step (b) in a second reactor comprising a catalyst, to produce hydrocarbon products comprising aromatics, wherein the second reactor is a fixed bed reactor comprising a MFI or MWW zeolite catalyst;
wherein the temperature in the fluidized bed reactor in step (b) is equal to or more than 400° C. to equal to or less than 600° C., the temperature in the reactor in step (c) is equal to or more than 350° C. to equal to or less than 550° C., and the temperature in the reactor in step (b) is kept higher than in the reactor in step (c).

### Claim 2 (depends on 1)

The process of claim 1, wherein the carrier gas in step (b) comprises butane gas.

### Claim 3 (depends on 1)

The process of claim 1, wherein the temperature in the reactor in step (b) is kept at about 550° C. and in step (c) the temperature in the reactor is kept at about 500° C.

### Claim 4 (depends on 1)

The process of claim 1, wherein the total reaction time of steps (b) and (c) is from equal to or more than 1 hr to equal to or less than 15 hrs.

### Claim 5 (depends on 1)

The process of claim 1, wherein the catalyst in step (c) is a MFI zeolite.

### Claim 6 (depends on 5)

The process of claim 5, wherein the catalyst is a ZSM-5 zeolite.

### Claim 7 (depends on 6)

The process of claim 6, wherein the catalyst is a Ga/ZSM-5 zeolite.

### Claim 8 (depends on 1)

The process of claim 1, wherein the catalyst is a mesoporous MFI zeolite.

### Claim 9 (depends on 8)

The process of claim 8, wherein the catalyst is a mesoporous ZSM-5 zeolite.

### Claim 10 (depends on 8)

The process of claim 8, wherein the catalyst is a mesoporous Ga/ZSM-5 zeolite.