# US 12,000,543 B2 · Mixer with multi-injection quills > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,000,543 B2 - Document ID: US12000543B2 - Status: Granted - Kind: B2 - Application number: 18/046,299 - Filed: 2022-10-13 - Published: 2024-04-18 - Granted: 2024-06-04 - Earliest claimed: 2022-10-13 - Assignees: Saudi Arabian Oil Company - Applicants: Saudi Arabian Oil Company - Inventors: Abdoulelah Naji Al-Hannabi; Mohammed Dhaifallah Alotaibi; Hatam Mehraz; Saad Hezam Alshahrani; Fikir Ali Al-Suwaileh - Web page: https://patentgrep.com/patent/US12000543B2 ## CPC - F17D 3/12: for injecting a composition into the line - G05D 21/02: characterised by the use of electric means - F17D: PIPE-LINE SYSTEMS; PIPE-LINES (pumps or compressors F04; fluid dynamics F15D; valves or the like F16K; pipes, laying pipes, supports, joints, branches, repairing, work on the entire line, accessories F16L; steam traps or the like F16T; fluid-pressure electric cables H01B9/06) - G05D: SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES ## Abstract A combined chemical injection and mixing system including an injection stream pipe, a target pipe disposed within the injection stream pipe, and a plurality of injection quills is described. The injection stream pipe encloses the plurality of injection quills, and the plurality of injection quills each independently includes a quill check valve and a quill flange. A method for mixing at least one chemical in a pipeline is also described. The method includes providing a chemical injection and mixing system configured to a pipeline, forming a pipeline treatment system, providing a fluid flow in the pipeline treatment system, injecting at least one chemical via the plurality of injection quills, and mixing the at least one injected chemical in a mixing zone of the chemical injection and mixing system, thereby mixing the at least one injected chemical in the fluid flow. ## Claims ### Claim 1 A combined chemical injection and mixing system comprising: an injection stream pipe; a target pipe disposed within the injection stream pipe; and a plurality of injection quills, wherein the injection stream pipe encloses the plurality of injection quills, and wherein the plurality of injection quills each independently comprise a quill check valve and a quill flange. ### Claim 2 (depends on 1) The system of claim 1, wherein the system further comprises a piping flange. ### Claim 3 (depends on 2) The system of claim 2, wherein the system is connected to a target pipe via the piping flange. ### Claim 4 (depends on 1) The system of claim 1, wherein the system further comprises a mixing zone. ### Claim 5 (depends on 1) The system of claim 1, wherein the plurality of injection quills comprises two or more injection quills. ### Claim 6 (depends on 5) The system of claim 5, wherein the two or more injection quills are radially configured with respect to a vertical axis of the injection stream pipe. ### Claim 7 (depends on 1) The system of claim 1, wherein the plurality of injection quills comprises six injection quills. ### Claim 8 (depends on 7) The system of claim 7, wherein the six injection quills are radially disposed at 0°, 60°, 90°, 120°, 180°, 240°, and 300° with respect to a vertical axis of the injection stream pipe. ### Claim 9 (depends on 1) The system of claim 1, wherein the system comprises a control unit in electrical connection with the plurality of injection quills. ### Claim 10 (depends on 9) The system of claim 9, wherein the control unit is electrically connected to a sensor, wherein the sensor is located downstream of the chemical injection and mixing system on a pipeline. ### Claim 11 (depends on 9) The system of claim 9, wherein the plurality of injection quills are in fluid communication with one or more chemical sources comprising at least one. ### Claim 12 (depends on 11) The system of claim 11, wherein the at least one chemical is selected from the group consisting of sulfuric acid, chlorine, methanol, and combinations thereof. ### Claim 13 A method for mixing at least one chemical in a pipeline, the method comprising: providing a chemical injection and mixing system configured to a pipeline, forming a pipeline treatment system, wherein the chemical injection and mixing system comprises: an injection stream pipe; a target pipe; and a plurality of injection quills, providing a fluid flow in the pipeline treatment system; injecting at least one chemical via the plurality of injection quills; mixing the at least one injected chemical in a mixing zone of the chemical injection and mixing system, thereby mixing the at least one injected chemical in the fluid flow. ### Claim 14 (depends on 13) The method of claim 13, further comprising providing one or more chemical sources in fluid communication with the plurality of injection quills. ### Claim 15 (depends on 14) The method of claim 14, further comprising injecting at least one chemical from the one or more chemical sources. ### Claim 16 (depends on 13) The method of claim 13, wherein injecting the at least one chemical comprises injecting a chemical selected from the group consisting of sulfuric acid, chlorine, methanol, and combinations thereof. ### Claim 17 (depends on 13) The method of claim 13, wherein the injecting the at least one chemical comprises operating a control unit, thereby controlling the injection of at least one chemical with the control unit. ### Claim 18 (depends on 17) The method of claim 17, wherein operating the control unit further comprises controlling a flow rate of each of the plurality of injection quills. ### Claim 19 (depends on 18) The method of claim 18, wherein operating the control unit further comprises detecting a pH of at least one injected chemical mixed with the fluid flow downstream of the chemical injection and mixing system via a sensor. ### Claim 20 (depends on 19) The method of claim 19, wherein operating the control unit further comprises: transmitting a first signal comprising the detected pH to the control unit; and transmitting a second signal from the control unit to one or more injection quills to control a flow rate of the at least one chemical injected using the one or more injection quills.