CHEMICAL COMPOUND CAPTURE SYSTEM AND METHOD
Embodiments disclosed herein relate to methods of processing coal. A method to process coal includes subjecting raw coal to a liquefaction process effective to form a pitch resin, subjecting the pitch resin to a variable crystallinity spinning process effective to form raw fiber, and subjecting the raw fiber to a carbonization process effective to form a low thermal conductivity carbon fiber.
1 . A capture system comprising:
a voltage source;
an electroactive polymer in electrical communication with the voltage source; and
at least one of carbon nanotubes, graphene, graphene oxide, or graphene dots configured to alter characteristics of the electroactive polymer;
wherein the capture system is configured to bind a chemical compound to the electroactive polymer when a voltage is applied to the electroactive polymer.
2 . The capture system of claim 1 , wherein the electroactive polymer comprises a low thermal conductivity carbon fiber.
3 . The capture system of claim 1 , wherein the electroactive polymer comprises at least one of graphene, graphene oxide, graphene nanotubes, or graphene dots.
4 . The capture system of claim 1 , wherein the electroactive polymer comprises graphene nanotubes configured to provide additional void space to promote greater insulating properties.
5 . The capture system of claim 1 , wherein the electroactive polymer is derived from coal by a process comprising:
subjecting raw coal to a liquefaction process to form anthracene;
oxidizing the anthracene to form anthraquinone;
chlorinating the anthraquinone to form dichloroanthraquinone; and
polymerizing the dichloroanthraquinone to produce the electroactive polymer.
6 . The capture system of claim 5 , wherein the anthraquinone is chlorinated with hydrochloric acid.
7 . The capture system of claim 1 , wherein the capture system is configured to bind the chemical compound from a gaseous stream.
8 . The capture system of claim 1 , wherein the capture system is configured to release the chemical compound from the electroactive polymer when a polarity of the voltage is reversed.
9 . The capture system of claim 1 , wherein the chemical compound comprises carbon dioxide.
10 . A method of capturing a chemical compound, the method comprising:
placing an electroactive polymer into a stream comprising the chemical compound;
applying a voltage to the electroactive polymer such that the chemical compound binds to the electroactive polymer; and
reversing a polarity of the voltage applied to the electroactive polymer to release the chemical compound.
11 . The method of claim 10 , wherein the electroactive polymer comprises at least one of graphene, graphene oxide, carbon nanotubes, or graphene dots configured to increase an electrical conductivity of the electroactive polymer.
12 . The method of claim 10 , wherein the chemical compound comprises carbon dioxide.
13 . The method of claim 12 , further comprising collecting the carbon dioxide and converting the carbon dioxide into at least one of a syngas, a hydrocarbon material, or a densified liquid.
14 . A capture system comprising:
a low-density carbon fiber material comprising binding sites configured to bind a chemical compound; and
a voltage source electrically connected to the low-density carbon fiber material and configured to control binding of the chemical compound to the low-density carbon fiber material.
15 . The capture system of claim 14 , wherein the low-density carbon fiber comprises at least one of an electroactive polymer, graphene, or a graphene oxide.
16 . The capture system of claim 14 , wherein the voltage source is configured to:
apply a voltage with a first polarity to the low-density carbon fiber material to bind the chemical compound to the low-density carbon fiber material; and
apply the voltage with a second polarity opposite to the first polarity to the low-density carbon fiber material to release the chemical compound from the low-density carbon fiber material.
17 . The capture system of claim 14 , wherein the low-density carbon fiber material is configured to bind the chemical compound from a gaseous stream.
18 . The capture system of claim 14 , wherein the low-density carbon fiber material comprises polymerized dichloroanthraquinone.
19 . The capture system of claim 14 , wherein the low-density carbon fiber material comprises a web of small diameter fibers.
20 . The capture system of claim 14 , wherein the binding sites comprise ketone functionality.