Systems for producing solid carbon by reducing carbon oxides
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C01B-031/00
C01B-031/02
C01B-031/04
B01J-019/00
B01J-019/18
출원번호
US-0775939
(2014-03-13)
등록번호
US-9586823
(2017-03-07)
국제출원번호
PCT/US2014/026631
(2014-03-13)
국제공개번호
WO2014/151898
(2014-09-25)
발명자
/ 주소
Noyes, Dallas B.
출원인 / 주소
Seerstone LLC
대리인 / 주소
TraskBritt, P.C.
인용정보
피인용 횟수 :
0인용 특허 :
188
초록▼
An apparatus for producing solid carbon and water by reducing carbon oxides with a reducing agent in the presence of a catalyst includes a reactor configured to receive reaction gas comprising at least one carbon oxide, at least one reducing agent, and water. The apparatus includes at least one mixi
An apparatus for producing solid carbon and water by reducing carbon oxides with a reducing agent in the presence of a catalyst includes a reactor configured to receive reaction gas comprising at least one carbon oxide, at least one reducing agent, and water. The apparatus includes at least one mixing means configured to mix the reagents to form a combined feed, a first heat exchanger configured to heat the combined feed, at least one heater configured to further heat the combined feed, and a reaction vessel configured to receive the combined feed. The reaction vessel is configured to contain a catalyst, to maintain predetermined reaction conditions of temperature and pressure, and has an output configured to deliver a tail gas to the first heat exchanger. The system also includes a product separator, a water separation unit, and a product packaging unit.
대표청구항▼
1. An apparatus for producing solid carbon by catalytically reducing carbon oxides using a reducing agent, comprising: a reactor configured to receive a dried recycle gas, a fresh feed gas comprising at least one carbon oxide, and at least one reducing agent, the reactor comprising: at least one mix
1. An apparatus for producing solid carbon by catalytically reducing carbon oxides using a reducing agent, comprising: a reactor configured to receive a dried recycle gas, a fresh feed gas comprising at least one carbon oxide, and at least one reducing agent, the reactor comprising: at least one mixing means configured to mix the dried recycle gas, the fresh feed gas, and the at least one reducing agent to form a combined feed gas;at least one heat exchanger configured to heat the combined feed gas to a first temperature by recovering heat from at least one other higher-temperature process stream of the apparatus;at least one heater configured to further heat the combined feed gas to a second temperature higher than the first temperature;a reaction vessel configured to receive the heated combined feed gas, the reaction vessel further configured to maintain predetermined reaction conditions of temperature and pressure and to contain a catalyst; andat least one discharge of raw tail gas comprising unreacted gases, reaction product gases, entrained solid carbon, and water;a product separator configured to receive the raw tail gas from the reaction vessel and to separate the raw tail gas into a clean tail gas and a products stream comprising solid carbon, wherein the product separator is configured to pass the products stream through a cooling heat exchanger lock drum;a water separation unit configured to receive the clean tail gas from the product separator and to remove at least a portion of the water in the clean tail gas to form a dried recycle gas, the water separation unit comprising: a first condenser configured to receive the clean tail gas and to cool the clean tail gas to condense water from the clean tail gas; anda water discharge system for removing the water from the apparatus; anda product receiving unit configured to receive the products stream from the cooling heat exchanger lock drum. 2. The apparatus of claim 1, wherein the reactor further comprises at least one control system feedback loop configured to monitor and control a reaction temperature in the reaction vessel and the at least one heater. 3. The apparatus of claim 1, further comprising a hopper in communication with the reactor vessel and configured to deliver fresh catalyst to the reaction vessel. 4. The apparatus of claim 1, wherein the product separator comprises at least one of a cyclone, a bag house, and a scrubber. 5. The apparatus of claim 1, wherein the product separator comprises a water-gas conversion reactor configured to oxidize solid carbon to a carbon oxide and hydrogen by addition of water. 6. The apparatus of claim 1, further comprising a water treatment system comprising a tank, a pump, and at least one filter configured to remove impurities from water condensed in the water separation unit. 7. The apparatus of claim 1, wherein the first condenser comprises at least one of a water-cooled condenser, and air-cooled condenser, or a refrigerated condenser. 8. The apparatus of claim 1, wherein the product-receiving unit comprises a product-receiving silo or hopper, a transfer means configured to deliver the product from the product-receiving silo or hopper to an enclosed package loading unit, and a blower-and-filter system configured to remove solid carbon from gases in the product-receiving unit. 9. The apparatus of claim 1, further comprising at least one air-handling device selected from the group consisting of compressors and process gas blowers, the at least one air-handling device configured to compress the dried recycle gas, a portion of the fresh feed, and the reducing agent to form the combined feed gas at a predetermined pressure. 10. The apparatus of claim 9, wherein the at least one air-handling device is configured to pass the combined feed gas to a storage or surge tank, wherein an output of the storage or surge tank is configured to deliver the combined feed gas to the reactor. 11. The apparatus of claim 9, wherein the water separation unit further comprises a first output configured to pass the dried recycle gas to the at least one air-handling device. 12. The apparatus of claim 1, further comprising at least one analyzer configured to analyze at least one parameter of the combined feed gas and to provide an analytical result to at least one of a gas-flow control valve, an air-handling device, a pump, a switch, the first heat exchanger, the at least one heater, the at least one mixing means, the product separator, the second heat exchanger, the first condenser, and the second condenser. 13. The apparatus of claim 1, wherein the water separation unit further comprises a second condenser to further cool the clean tail gas and form the dried recycle gas. 14. The apparatus of claim 13, wherein the second condenser comprises at least one of a refrigerated condenser, a water-cooled condenser, or an air-cooled condenser. 15. The apparatus of claim 13, wherein the second condenser comprises a refrigerated condenser configured to operate at a temperature selected to control a vapor pressure of water in the dry recycle gas to optimize the type of carbon product produced and avoid catalyst poisoning. 16. The apparatus of claim 15, wherein the refrigerated condenser is configured to operate at a temperature below about 0° C. 17. The apparatus claim 1, wherein the at least one mixing means is located downstream from the at least one heat exchanger. 18. The apparatus claim 1, wherein the at least one mixing means comprises at least one of a static mixer, a section of a feed line, and a section of the reactor. 19. An apparatus for producing solid carbon by catalytically reducing carbon oxides using a reducing agent, the apparatus comprising: a gas supply source configured to provide a mixed fresh feed gas comprising at least one carbon oxide and at least one reducing agent in a predetermined ratio and at a first predetermined pressure;a gas handling system having a recycled gas input configured to receive a recycled gas and the mixed fresh feed gas, the gas handling system comprising: at least one air-handling device configured to compress the recycled gas and the mixed fresh feed gas to form a compressed gas at a second predetermined pressure and to pass the compressed gas to a surge tank or drum;an output port configured to combine the compressed gas from the surge tank or drum with another carbon oxide feed to form a combined feed gas; andat least one gas-composition analyzer configured to analyze at least one parameter of the combined feed gas; anda control system feedback loop configured to use the at least one parameter of the combined feed gas to regulate a composition of the combined feed gas;a reactor configured to receive the combined feed gas, the reactor comprising: at least one first heat exchanger configured to heat the combined feed gas using heat captured from a clean tail gas;at least one heater configured to further heat the combined feed gas;at least one reaction vessel configured to receive the combined feed gas, the reaction vessel configured to contain a catalyst and to maintain predetermined composition and reaction conditions to form a reactor tail gas that contains a reaction product and unreacted gases; anda control system feedback loop configured to monitor and control reaction conditions in the reaction vessel;a product separator comprising: a product separation cyclone configured to receive the reactor tail gas and separate the reactor tail gas into a product and the clean tail gas, the product comprising a solid carbon;a product outlet port configured to pass the product from the product separation cyclone through a cooling heat exchanger; anda clean tail gas outlet port configured to pass the clean tail gas from the product separation cyclone to the at least one first heat exchanger of the reactor;a water separator comprising: at least one second heat exchanger configured to receive the clean tail gas from the at least one first heat exchanger;a water-cooled condenser configured to cool the clean tail gas;at least one filter configured to remove particulate material from the clean tail gas after the clean tail gas passes through the water-cooled condenser and having an output for a first condensed water; and a two-stage condenser configured to receive the clean tail gas from the at least one filter and to form a second condensed water and the recycled gas, the two-stage condenser further configured to pass the recycled gas to the at least one second heat exchanger;a water treatment system configured to receive the first condensed water and the second condensed water, the water treatment system comprising a tank, a pump, and at least one filter to remove impurities from the first condensed water and the second condensed water;a product packaging system configured to receive the product and comprising at least one loading unit, a blower-and-filter system to remove impurities from air in a product packaging area, and access to a product shipping area; anda utility support system configured to provide a cyclic cooling water supply and return for the water-cooled condenser and the two-stage condenser, a cyclic glycol supply and return for the two-stage condenser, and at least one vent configured to release filtered gases. 20. An apparatus for producing solid carbon by reducing carbon oxides using a reducing agent, the apparatus comprising: a gas supply system configured to deliver a first fresh feed gas comprising at least one carbon oxide gas at a first predetermined pressure and a second fresh feed gas comprising at least one reducing agent at a second predetermined pressure;a gas handling system comprising: a fresh feed gas input line configured to mix the first fresh feed and the second fresh feed gas to form a combined fresh feed;an input line for a recycled compressed gas configured to mix the recycled compressed gas with the combined fresh feed gas to form a combined feed gas;at least one first heat exchanger configured to transfer heat from a clean tail gas to the combined feed gas;at least one filter configured to remove particulate material from the clean tail gas;at least one condenser configured to remove water from the clean tail gas, the at least one condenser having at least one output line configured to release water;at least one output line through which excess gases from the clean tail gas may be exhausted; andat least one air-handling device configured to compress the recycled gas to a predetermined pressure to form the recycled compressed gas;a reactor configured to receive the combined feed gas, the reactor comprising: at least one second heat exchanger configured to transfer heat from a reactor tail gas to the combined feed gas;at least one heater configured to further heat the combined feed gas; andat least one reaction vessel configured to receive the combined feed gas, the reaction vessel configured to maintain predetermined composition and reaction conditions and to contain a catalyst, wherein the reactor tail gas formed in the at least one reaction vessel contains reaction product gases, solid carbon, water, and unreacted gases;a product separating and packaging system comprising: a product separator configured to separate the solid carbon from the reactor tail gas into a product and the clean tail gas;a product outlet port configured to pass the product from the product separator through a cooling heat exchanger to a product packaging area; anda clean tail gas outlet port configured to pass the clean tail gas from a product separation cyclone to the at least one first heater within the gas handling system; andwherein the product packaging area comprises at least one loading unit, a blower-and-filter system to remove impurities from the air, and access to a product shipping area;a water treatment system comprising at least one tank configured to hold the water removed from the clean tail gas before discharging the water to a drain; anda venting system comprising at least one exhaust stack configured to received excess gases from the at least one output line of the gas handling system and to release gases to a safe location.
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