Semi-industrial pilot-scale system for controlled two-phase gas-solid conveying testing with integrated pressure and flow regulation

Abstract

A system configured to conduct a two-phase gas-solid conveying test under controlled pressure and flow conditions, the system comprising a gas pressure supply unit comprising at least one gas pressurizing device configured to receive and pressurize a gas stream and deliver the pressurized gas stream to a gas inlet line; a cooling unit disposed at a downstream of the gas pressure supply unit and connected in fluid communication therewith, the cooling unit configured to regulate a temperature of the pressurized gas stream; a gas flow control unit disposed at a downstream of the cooling unit and connected in fluid communication therewith, the gas flow control unit configured to regulate either a flow rate and a velocity of the pressurized gas stream through the gas inlet line, the gas flow control unit comprising at least one flow measuring device and at least one flow regulating valve; a two-phase transport unit disposed at a downstream of the gas flow control unit and connected in fluid communication therewith, the two-phase transport unit comprising a two-phase transport line configured to convey a two-phase gas-solid flow and at least one pressure monitoring device disposed along the two-phase transport line and configured to monitor pressure drop during the two-phase gas-solid conveying test; a solid-phase feeding unit mechanically coupled and fluidly connected to the two-phase transport line, the solid-phase feeding unit configured to deliver a plurality of solid particles into the two-phase transport line to form the two-phase gas-solid flow; and a product collection and separation unit disposed at a downstream of the two-phase transport unit and connected in fluid communication therewith, the product collection and separation unit configured to receive the two-phase gas-solid flow, separate a solid phase from a gas phase, and discharge the gas phase to an atmospheric outlet.

Description

REF-1404-02-017SEMI-INDUSTRIAL PILOT-SCALE SYSTEM FOR CONTROLLED TWO-PHASE GAS-SOLID CONVEYING TESTING WITH INTEGRATED PRESSURE AND FLOW REGULATION CROSS-REFERENCE TO RELATED APPLICATION

[0001] The present disclosure application claims priority from pending IR Patent Application Serial No 140350140003008117, filed on February 22, 2025, entitled “Pilot-Scale Two-Phase Gas-Solid Conveying Test System with Pressure and Flow Control for Evaluating Various Materials Under Dense-Phase and Dilute-Phase Conditions”, which is incorporated by reference herein in its entirety.TECHNICAL FIELD

[0002] The present disclosure generally relates to an exemplary pneumatic conveying system for conducting a two-phase gas-solid conveying test under controlled pressure and flow conditions, and in particular to an exemplary system equipped with an exemplary gas pressure supply unit, an exemplary cooling unit, an exemplary gas flow control unit, an exemplary two-phase transport unit, an exemplary solid-phase feeding unit, and an exemplary product collection and separation unit.BACKGROUND

[0003] Gas-driven two-phase gas-solid conveying processes, using either air or neutral gases, are fundamental in various industrial applications, including pneumatic transport systems for powdery or granular materials in sectors such as chemical and petrochemical plants, mining, food and dairy, pharmaceuticals, and energy production. These processes involve entraining solid particles in a pressurized or vacuumed gas stream through transport pipelines, where parameters such as pressure drop, flow rates, velocities, and solid-to-gas mass ratios (also stipulated as solid-loading-ratio, namely SLR) critically influence efficiency,REF-1404-02-017energy consumption, and material integrity. Traditional laboratory-scale setups often fail to replicate semi-industrial conditions, leading to scalability challenges and inaccurate predictions of real-world performance under pressures ranging from 0.72 bar to 2.5 bar and velocities from 3 to 30 meters per second. Thus, there is a need to engineer an exemplary pneumatic conveying system for controlled two-phase gas-solid conveying tests, which may incorporate an exemplary intelligent interlock system for operational safety, transparent transport line sections for visual flow observation, and a gas recovery unit for closed-loop efficiency, thereby enabling precise evaluation of pressure losses, flow dynamics, and separation efficiencies while minimizing environmental emissions and ensuring compliance with industry standards.SUMMARY

[0004] This summary is intended to provide an overview of the subject matter of the present disclosure, and is not intended to identify essential elements or key elements of the subject matter, nor is it intended to be used to determine the scope of the claimed implementations. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later. The proper scope of the present disclosure may be ascertained from the claims set forth below in view of the detailed description below and the drawings. One or more exemplary embodiments describe an exemplary system configured to conduct a two-phase gas-solid conveying test under controlled pressure and flow conditions. In an exemplary embodiment, an exemplary system may include an exemplary gas pressure supply unit. In an exemplary embodiment, an exemplary gas pressure supply unit may comprise at least one gas pressurizing device configured to receive and pressurize a gas stream and deliver the pressurized gas stream to a gas inlet line. In an exemplary embodiment, an exemplary gas pressure supply unit may comprise, for example, but is not limited to, an oil -free roots blower and an oil-free compressor arranged in parallel fluid communication with one another, wherein each of the oil-free rootsREF-1404-02-017blower and the compressor has a corresponding manual isolation valve with position indicator and a check valve which are configured to prevent backflow. In an exemplary embodiment, an exemplary system may further include an exemplary cooling unit disposed at a downstream of the gas pressure supply unit and connected in fluid communication therewith. In an exemplary embodiment, an exemplary cooling unit may be configured to regulate a temperature of the pressurized gas stream. In an exemplary embodiment, an exemplary cooling unit may comprise a primary heat exchanger configured to receive the pressurized gas stream from the gas inlet line and cool the pressurized gas stream to a predetermined temperature before delivering the gas stream to a gas flow control unit. In an exemplary embodiment, an exemplary cooling unit may further comprise an automatic temperature control system configured to adjust the temperature of the gas stream exiting the primary heat exchanger to a predetermined target temperature, a secondary heat exchanger arranged in series with the primary heat exchanger and configured to cool a coolant fluid exiting the primary heat exchanger, a coolant storage tank configured to receive the cooled coolant fluid from the secondary heat exchanger, and a coolant circulation pump configured to circulate the coolant fluid from the coolant storage tank back to the primary heat exchanger. In an exemplary embodiment, the primary heat exchanger may be a shell-and-tube heat exchanger, the secondary heat exchanger may be an air-cooled heat exchanger, and the coolant fluid may comprise water. In an exemplary embodiment, an exemplary system may further include an exemplary gas flow control unit disposed at a downstream of the cooling unit and connected in fluid communication therewith. In an exemplary embodiment, an exemplary gas flow control unit may be configured to regulate either a flow rate and a velocity of the pressurized gas stream through the gas inlet line. In an exemplary embodiment, an exemplary gas flow control unit may comprise at least one flow measuring device and at least one flow regulating valve. In an exemplary embodiment, an exemplary gas flow control unit may further comprise an automatic control valve configuredREF-1404-02-017to maintain a predetermined flow rate based on pressure measurements received from at least one pressure monitoring device, flow measurements received from at least one flow measuring device, or both. In an exemplary embodiment, an exemplary gas flow control unit may further comprise a proportional-integral-derivative (PID) controller configured to automatically adjust the flow rate of the gas stream based on measurement signals received from the flow measuring device, and to record the measured flow data for subsequent control adjustments. In an exemplary embodiment, an exemplary system may further include an exemplary two-phase transport unit disposed at a downstream of the gas flow control unit and connected in fluid communication therewith. In an exemplary embodiment, an exemplary two-phase transport unit may comprise a two-phase transport line configured to convey a two-phase gas-solid flow and at least one pressure monitoring device disposed along the two-phase transport line and configured to monitor pressure drop during the two-phase gas-solid conveying test. In an exemplary embodiment, an exemplary two-phase transport unit may further comprise straight pipeline sections disposed in the two-phase transport line, the straight pipeline sections having no bends; a set of curved pipeline sections disposed in the two-phase transport line, wherein the curved pipeline section has a larger diameter (r / D>5), and at least one bend compared to the straight pipeline section; and a diverter valve configured to selectively direct the two-phase gas-solid flow either toward the straight pipeline section or toward the curved pipeline section. In an exemplary embodiment, the curved pipeline section may comprise a pneumatic ball valve disposed therein to isolate the back flow of the gas flow from the curved pipeline section to the straight pipeline section or vice versa. In an exemplary embodiment, at least a portion of the two-phase transport line may be transparent configured to enable visual detection and observation of the behavior of the two-phase gas-solid flow. In an exemplary embodiment, an exemplary system may further include an exemplary solid-phase feeding unit mechanically coupled and fluidly connected to the two-phase transport line. In an exemplary embodiment,REF-1404-02-017an exemplary solid-phase feeding unit may be configured to deliver a plurality of solid particles into the two-phase transport line to form the two-phase gas-solid flow. In an exemplary embodiment, an exemplary solid-phase feeding unit may comprise a rotary feeder configured to deliver the solid particles into the two-phase transport line, wherein the rotary feeder is operable within a pressure range of 0.3 to 3.5 bar, and an air purge assembly configured to prevent backflow or leakage of the solid fine particles and the gas phase during operation of the solid-phase feeding unit under the pressure range. In an exemplary embodiment, an exemplary system may further comprise a sampling valve configured to extract a representative sample of the solid particles entering the two-phase line. In an exemplary embodiment, an exemplary system may further include an exemplary product collection and separation unit disposed at a downstream of the two-phase transport unit and connected in fluid communication therewith. In an exemplary embodiment, an exemplary product collection and separation unit may be configured to receive the two-phase gas-solid flow, separate a solid phase from a gas phase, and discharge the gas phase to an atmospheric outlet. In an exemplary embodiment, an exemplary product collection and separation unit may comprise a first product collection tank configured to separate the solid phase from the gas phase. In an exemplary embodiment, the first product collection tank comprises at least one manual slide gate valve configured to control the solid particles discharge. In an exemplary embodiment, a reversed flow pulse jet filter assembly disposed downstream of the first product collection tank and configured to receive and purify the separated gas phase from the first product collection tank; and a second product collection tank disposed at a downstream of the first product collection tank and configured to receive the separated solid particles therefrom. In an exemplary embodiment, the reversed flow pulse jet filter assembly may be a baghouse filter assembly comprising filter bags, accumulation tanks, pulsation solenoids, pule jet tubes, and timer controller, the filter assembly configured to discharge the separated gas phase with a filtrationREF-1404-02-017efficiency of at least 99.9% for solid particles having a size greater than 5 microns separated from the two-phase gas-solid flow. In an exemplary embodiment, an exemplary product collection and separation unit may further comprise an automatic pulse-jet cleaning system with a local timer controller configured to clean the filter bags during operation of the filter assembly. In an exemplary embodiment, an exemplary product collection and separation unit may further comprise a load cell assembly on which the second product collection tank is mounted, the load cell assembly configured to measure a weight of the second product collection tank and generate a corresponding weight signal based on the measured weight; and a controller configured to receive the weight signal from the load cell assembly and regulate the entrance of the solid particles into the second product collection tank to maintain particle accumulation within predetermined limits. In an exemplary embodiment, an exemplary system may further comprise a temperature and pressure monitoring assembly configured to measure temperature and pressure at a downstream location of both the gas pressure supply unit and the gas flow control unit. In an exemplary embodiment, an exemplary system may further comprise a gas recovery unit configured to collect the separated gas phase discharged from the reversed flow pulse jet filter assembly and recirculate the collected gas back to the gas pressure supply unit. In an exemplary embodiment, an exemplary system may further comprise an intelligent interlock system configured to ensure operational safety by preventing errors caused by unauthorized pressure or flow conditions during the two-phase gas-solid conveying test. In an exemplary embodiment, a solid loading ratio (SLR) in the two-phase transport line may range from 5 to 50. In an exemplary embodiment, a gas entry velocity at the two-phase transport line may range from 3 to 30 meters per second. This Summary may introduce a number of concepts in a simplified format; the concepts are further disclosed within the “Detailed Description” section. This Summary is not intended to configure essential / key features of the claimed subject matter, nor is intended to limit the scope of the claimed subject matter. This Summary mayREF-1404-02-017introduce a number of concepts in a simplified format; the concepts are further disclosed within the “Detailed Description” section. This Summary is not intended to configure essential / key features of the claimed subject matter, nor is intended to limit the scope of the claimed subject matter.BRIEF DESCRIPTION OF THE DRAWINGS

[0005] The novel features which are believed to be characteristic of the present disclosure, as to its structure, organization, use and method of operation, together with further objectives and advantages thereof, will be better understood from the following drawings in which an exemplary embodiment will now be illustrated by way of example. It is expressly understood, however, that the drawings are for the purpose of illustration and description only and are not intended as a definition of the limits of the present disclosure. Exemplary embodiments will now be described by way of example in association with the accompanying drawings in which:FIG. 1 illustrates a schematic diagram of an exemplary pneumatic conveying system for conducting a two-phase gas-solid conveying test under controlled pressure and flow conditions, consistent with one or more exemplary embodiments of the present disclosure.DETAILED DESCRIPTION

[0006] In the following detailed description, numerous specific details are set forth by way of examples to provide a thorough understanding of the relevant teachings related to the exemplary embodiments. However, it should be apparent that the present teachings may be practiced without such details. In other instances, well known methods, procedures, components, and / or circuitry have been described at a relatively high-level, without detail, in order to avoid unnecessarily obscuring aspects of the present teachings.

[0007] The following detailed description is presented to enable a person skilled in the art to make and use the methods and devices disclosed in one or more exemplary embodiments ofREF-1404-02-017the present disclosure. For purposes of explanation, specific nomenclature is set forth to provide a thorough understanding of the present disclosure. However, it will be apparent to one skilled in the art that these specific details are not required to practice the disclosed exemplary embodiments. Descriptions of specific exemplary embodiments are provided only as representative examples. Various modifications to the exemplary implementations will be plain to one skilled in the art, and the general principles defined herein may be applied to other implementations and applications without departing from the scope of the present disclosure. The present disclosure is not intended to be limited to the implementations shown, but is to be accorded the widest possible scope consistent with the principles and features disclosed herein.

[0008] Disclosed herein is an exemplary pneumatic conveying system for conducting a two-phase gas-solid conveying test under controlled pressure and flow conditions. In an exemplary embodiment, an exemplary pneumatic conveying system may be configured as a semi-industrial pilot-scale system. In an exemplary embodiment, "semi-industrial" may refer to an intermediate scale between laboratory and full industrial operations. Such a scale may allow for realistic simulation of industrial processes while maintaining flexibility for testing and modifications. In an exemplary embodiment, "pilot-scale" may denote a prototype or testbed setup. Such a setup may be designed to validate concepts, optimize parameters, and gather data prior to scaling up to commercial production.

[0009] An exemplary pneumatic conveying system may be beneficial as it may simulate and evaluate the behavior of solid materials in two-phase (gas-solid) transport lines, enabling controlled testing of parameters such as pressure drop, flow rates, velocities, and a solid loading ratio (SLR) ranging from 5 to 50. Moreover, an exemplary pneumatic conveying system may incorporate an intelligent interlock system that may ensure operational safety by preventing errors caused by unauthorized pressure or flow conditions during the two-phase gas-solid conveying test. An exemplary two-phase gas-solid conveying test may refer to a process forREF-1404-02-017transporting solid particles (e.g., powdery or granular materials) entrained in a gas stream (e.g., pressurized air) through a transport line, with gas entry velocity (namely pick-up velocity) adjustable from 3 to 30 meters per second. In an exemplary embodiment, at least a portion of an exemplary two-phase transport line may be transparent to enable visual detection and observation of the two-phase gas-solid flow. In one or more exemplary embodiments, an exemplary system may further include a gas recovery unit configured to recirculate separated gas back to a gas pressure supply unit, promoting closed-loop efficiency and reducing environmental emissions.

[0010] Referring to the figures, FIG. 1 illustrates a schematic diagram of pneumatic conveying system 1000 for conducting a two-phase gas-solid conveying test under controlled pressure and flow conditions, consistent with one or more exemplary embodiments of the present disclosure. In further detail with respect to FIG. 1, pneumatic conveying system 1000 may include gas pressure supply unit 100, cooling unit 200 disposed downstream of gas pressure supply unit 100 and connected in fluid communication therewith, gas flow control unit 300 disposed downstream of cooling unit 200 and connected in fluid communication therewith, solid-phase feeding unit 400 mechanically coupled and fluidly connected to two-phase transport unit 500, two-phase transport unit 500 disposed downstream of gas flow control unit 300 and connected in fluid communication therewith, and product collection and separation unit 495 disposed downstream of two-phase transport unit 500 and connected in fluid communication therewith. In an exemplary embodiment, product collection and separation unit 495 may refer to an integrated assembly configured to receive the two-phase gas-solid flow, separate a solid phase from a gas phase, and discharge the gas phase to an atmospheric outlet at atmospheric pressure (approximately 1 bar). In an exemplary embodiment, the overall flow path of pneumatic conveying system 1000 may direct the pressurized gas stream from gas pressure supply unit 100 sequentially through cooling unit 200REF-1404-02-017for temperature regulation, gas flow control unit 300 for flow and velocity control, solid injection via solid-phase feeding unit 400 into two-phase transport unit 500 for conveyance testing, and separation at product collection and separation unit 495, thereby enabling controlled two-phase gas-solid dynamics under pressures ranging from 0.5 barg to 3.0 barg and pick-up velocities from 3 to 30 meters per second. In an exemplary embodiment, pneumatic conveying system 1000 may comprise, for example, but is not limited to, integrated piping and instrumentation diagrams (P&ID) for seamless unit interconnection, or other flow path configurations well-known to those skilled in the art.

[0011] In further detail with respect to gas pressure supply unit 100, gas pressure supply unit 100 may be configured to receive a gas stream (e.g., ambient air), pressurize it, and deliver the pressurized gas stream to gas inlet line 130, as illustrated in FIG. 1. In an exemplary embodiment, gas pressure supply unit 100 may comprise at least one gas pressurizing device, including oil-free screw compressor 110 and oil-free roots blower 120 arranged in parallel fluid communication with one another. In an exemplary embodiment, oil-free screw compressor 110 may be configured to receive the gas stream and pressurize it to approximately 3.0 barg before delivering it to gas inlet line 130. In an exemplary embodiment, oil-free roots blower 120 may be configured to receive the gas stream and pressurize it to approximately 0.5 barg before delivery to gas inlet line 130. In an exemplary embodiment, each of oil-free roots blower 120 and oil-free screw compressor 110 may have a corresponding manual isolation valve (manual isolation valve 115 for oil-free screw compressor 110 and manual isolation valve 125 for oil-free roots blower 120) and a check valve (check valve 113 for oil-free screw compressor 110 and check valve 123 for oil-free roots blower 120), both configured to prevent backflow and ensure safe isolation during maintenance or selective operation. In an exemplary embodiment, a pressure transmitter assembly, including pressure transmitters 111 and 121, may be positioned downstream of oil-free screw compressor 110 and oil-free roots blower 120,REF-1404-02-017respectively, to measure the pressurized gas conditions. In an exemplary embodiment, gas pressure supply unit 100 may further comprise a control valve disposed along gas inlet line 130, configured to regulate the flow rate of the pressurized gas stream passing therethrough, ensuring stable delivery to downstream units such as cooling unit 200. In an exemplary embodiment, gas pressure supply unit 100 may comprise, for example, but is not limited to, a single oil-free screw compressor, a single oil-free roots blower, an exemplary combination thereof, or other gas pressurizing devices well-known to those skilled in the art.

[0012] In further detail with respect to operating conditions of gas pressure supply unit 100, oil-free screw compressor 110 and oil-free roots blower 120 may be selectively operated to achieve a combined pressurized gas stream suitable for downstream two-phase flow stability, with pressure monitoring via pressure transmitters 111 and 121 ensuring conditions within a range of 0.5 barg to 3.0 barg. In an exemplary embodiment, manual isolation valves 115 and 125 may be configured to isolate individual devices for maintenance without interrupting overall system operation. In an exemplary embodiment, checkvalves 113 and 123 may prevent backflow under differential pressures exceeding 0.5 barg, enhancing safety in pneumatic conveying system 1000. In an exemplary embodiment, oil-free roots blower 120 and oil-free screw compressor 110 of gas pressure supply unit 100 may be selectively operated for low-pressure (approximately 0.5 barg) or high-pressure (approximately 3.0 barg) applications, respectively, with manual isolation valves 115 and 125 enabling maintenance isolation without system interruption, and check valves 113 and 123 preventing backflow under differential pressures exceeding 0.5 bar, as illustrated in FIG. 1. In an exemplary embodiment, gas pressure supply unit 100 may comprise, for example, but is not limited to, automated selectors for blower / compressor switching, or other pressurizing configurations well-known to those skilled in the art.REF-1404-02-017

[0013] In further detail with respect to cooling unit 200, cooling unit 200 may be connected in fluid communication via gas inlet line 130 and configured to regulate a temperature of the pressurized gas stream to a predetermined temperature, such as approximately 35°C, before delivery to gas flow control unit 300, as illustrated in FIG. 1. In an exemplary embodiment, cooling unit 200 may comprise primary heat exchanger 210, implemented as a shell-and-tube heat exchanger, which receives the pressurized gas stream from gas inlet line 130 and cools it using a coolant fluid. In an exemplary embodiment, primary heat exchanger 210 may deliver the cooled gas stream (at the predetermined temperature of about 35°C) to gas flow control unit 300. In an exemplary embodiment, an automatic temperature control system may be operably coupled to primary heat exchanger 210 and configured to adjust the temperature of the gas stream exiting primary heat exchanger 210 to a predetermined target temperature, for example, within a range of 30°C to 40°C, based on realtime temperature feedback. In an exemplary embodiment, a temperature monitoring assembly, including temperature transmitters 112 and 122, may be positioned downstream of oil-free screw compressor 110 and oil-free roots blower 120, respectively, to provide input for this control. In an exemplary embodiment, cooling unit 200 may further comprise secondary heat exchanger 220, arranged in series with primary heat exchanger 210 and implemented as an aircooled heat exchanger, which receives coolant fluid (e.g., water) exiting primary heat exchanger 210 at an elevated temperature (e.g., approximately 47°C) and cools it via forced air flow. In an exemplary embodiment, the cooled coolant fluid may then be directed to coolant storage tank 230 for collection, with coolant circulation pump 240 circulating the coolant fluid from coolant storage tank 230 back to primary heat exchanger 210 at an inlet temperature of approximately 34°C, completing a closed-loop cooling circuit that enhances energy efficiency and precise temperature regulation. In an exemplary embodiment, cooling unit 200 may comprise, for example, but is not limited to, a plate heat exchanger, a finned-tube heatREF-1404-02-017exchanger, an exemplary combination thereof, or other heat exchange devices well-known to those skilled in the art.

[0014] In further detail with respect to operating conditions of cooling unit 200, primary heat exchanger 210 may maintain the gas stream at approximately 35°C to optimize downstream two-phase flow stability, with automatic temperature control system adjusting coolant flow based on feedback from temperature transmitters 112 and 122. In an exemplary embodiment, secondary heat exchanger 220 and coolant circulation pump 240 may ensure coolant temperatures within a range of 34°C to 47°C, minimizing energy loss in the closed-loop circuit. In an exemplary embodiment, the closed-loop coolant circuit of cooling unit 200 may circulate water at 5-10 L / min from coolant storage tank 230 via coolant circulation pump 240 to primary heat exchanger 210, then to secondary heat exchanger 220 for cooling, maintaining gas exit at approximately 35°C with variations less than ±2°C, as illustrated in FIG. 1. In an exemplary embodiment, cooling unit 200 may comprise, for example, but is not limited to, flow meters for coolant regulation, or other circuit enhancements well-known to those skilled in the art. In an exemplary embodiment, alternative coolants may include, but are not limited to, a glycol solution, an air stream, or other cooling media well-known to those skilled in the art. In an exemplary embodiment, cooling unit 200 may comprise, for example, but is not limited to, glycol-based coolants for low-temperature applications, or other exchanger types well-known to those skilled in the art.

[0015] In further detail with respect to gas flow control unit 300, gas flow control unit 300 may be disposed downstream of cooling unit 200 and connected in fluid communication therewith, configured to regulate a flow rate and a velocity of the pressurized gas stream through gas inlet line 130, as illustrated in FIG. 1. In an exemplary embodiment, gas flow control unit 300 may comprise at least one flow measuring device, such as flow meter 330, and at least one flow regulating valve, including manual flow control valve 310 and automaticREF-1404-02-017control valve 320. In an exemplary embodiment, flow meter 330 may measure the flow rate and velocity of the gas stream delivered to two-phase transport line 510. In an exemplary embodiment, automatic control valve 320 may be configured to maintain a predetermined flow rate by selectively venting excess gas to atmospheric outlet 340 (discharged at atmospheric pressure, approximately 1 bar, to safely relieve overpressure without impacting the closed-loop system) based on pressure measurements received from at least one pressure monitoring device, flow measurements received from the at least one flow measuring device, or both. In an exemplary embodiment, the degree of opening / closing of automatic control valve 320 may be dependent on flow and / or velocity data received from flow meter 330. In an exemplary embodiment, manual flow control valve 310 may provide supplementary manual adjustment when automated control alone is insufficient for fine-tuning the flow rate. In an exemplary embodiment, a temperature and pressure transmitter assembly 301 and 302 may be positioned downstream of gas flow control unit 300 to measure temperature and pressure conditions postregulation. In an exemplary embodiment, gas flow control unit 300 may further comprise a proportional-integral-derivative (PID) controller operably coupled to automatic control valve 320 and flow meter 330, configured to automatically adjust the flow rate of the gas stream based on measurement signals received from the flow measuring device, and to record the measured flow data for subsequent control adjustments, historical analysis, and performance graphing. In an exemplary embodiment, gas flow control unit 300 may comprise, for example, but is not limited to, a variable frequency drive (VFD) for flow regulation, an exemplary orifice plate meter, an exemplary combination thereof, or other flow control devices well-known to those skilled in the art.

[0016] In further detail with respect to operating conditions of gas flow control unit 300, the regulated gas stream may enter two-phase transport line 510 at approximate conditions of temperature range 30 to 35°C and pressure range 0.46 to 2.96 barg, with PID controllerREF-1404-02-017maintaining pick-up velocities from 3 to 30 meters per second. In an exemplary embodiment, automatic control valve 320 may vent excess gas to atmospheric outlet 340 when flow exceeds a threshold of 10% above setpoint, ensuring precise control. In an exemplary embodiment, temperature and pressure transmitter assembly 301 and 302 may provide real-time data for interlock system activation if deviations exceed 5% from targets. In an exemplary embodiment, temperature and pressure transmitter assembly 301 and 302, positioned downstream of both gas pressure supply unit 100 and gas flow control unit 300, may capture post-regulation conditions such as temperatures ranges of approximately 30 to 35°C and pressure ranges of

[0017] 0.46 to 2.96 barg, providing data for control adjustments and safety interlocks, as illustrated in FIG. 1. In an exemplary embodiment, pneumatic conveying system 1000 may comprise, for example, but is not limited to, multi-point sensor arrays for redundant monitoring, or other assembly configurations well-known to those skilled in the art. In an exemplary embodiment, automatic control valve 320 of gas flow control unit 300 may adjust its opening degree based on feedback from flow meter 330 and pressure monitoring devices, venting excess gas to atmospheric outlet 340 (at approximately 1 bar) if flow deviates by more than 5% from setpoint, thereby maintaining stable delivery to two-phase transport unit 500, as illustrated in FIG. 1. In an exemplary embodiment, gas flow control unit 300 may comprise, for example, but is not limited to, feedback loops integrated with PID logic, or other valve control mechanisms well-known to those skilled in the art. In an exemplary embodiment, two-phase transport unit 500 may comprise, for example, but is not limited to, velocity probes for validation, or other measurement techniques well-known to those skilled in the art.

[0018] In further detail with respect to two-phase transport unit 500, two-phase transport unit 500 may be disposed downstream of gas flow control unit 300 and connected in fluid communication therewith, comprising two-phase transport line 510 configured to convey a two-phase gas-solid flow, and at least one pressure monitoring device (pressure transmitterREF-1404-02-017assembly 550) disposed along two-phase transport line 510 and configured to monitor pressure drop during the two-phase gas-solid conveying test, as illustrated in FIG. 1. In an exemplary embodiment, two-phase transport line 510 may receive the regulated gas stream from gas flow control unit 300 at entry conditions of approximate conditions of temperature range 30 to 35°C and pressure range 0.46 to 2.96 barg, with portions of line two-phase transport 510 being transparent to enable visual observation of the flow dynamics. In an exemplary embodiment, two-phase transport unit 500 may further comprise straight pipeline section 540 (having no bends and a diameter equivalent to that of two-phase transport line 510 from pipe ID sizes of 54.76 mm to 82.8 mm), curved pipeline section 530 (having a greater length, larger diameter, and at least one bend (with r / D>5) compared to straight pipeline section 540), and diverter valve 520 configured to selectively direct the two-phase gas-solid flow either toward straight pipeline section 540 or toward curved pipeline section 530 for comparative testing of pressure losses. In an exemplary embodiment, curved pipeline section 530 may include pneumatic ball valve 531 disposed therein to isolate the back flow of the gas flow from the curved pipeline section to the straight pipeline section or vice versa. In an exemplary embodiment, pressure transmitters within assembly 550 may be positioned along two-phase transport line 510, straight pipeline section 540, and curved pipeline section 530 to monitor and record pressure drops across lines and fittings. In an exemplary embodiment, two-phase transport unit 500 may comprise, for example, but is not limited to, a transparent acrylic section for visualization, an exemplary ultrasonic flow meter, an exemplary combination thereof, or other transport line configurations well-known to those skilled in the art.

[0019] In further detail with respect to operating conditions of two-phase transport unit 500, pressure transmitter assembly 550 may record pressure values within a range of 0.1 to 3.5 barg across sections, with diverter valve 520 enabling switching between straight and curved paths without flow interruption. In an exemplary embodiment, transparent portions of two-REF-1404-02-017phase transport line 510 may facilitate high-speed imaging of flow regimes at terminal velocities up to 35 meters per second. In an exemplary embodiment, pneumatic ball valve 531 may operate under pressures from 1.0 to 3.0 barg to minimize leakage and back flow during diversion. In an exemplary embodiment, two-phase transport unit 500 may comprise, for example, but is not limited to, modular sections for easy reconfiguration, or other pipeline designs, namely with different bend types and bend radii and pipe lengths and pipe ID sizes and pipe inner surface roughness, well-known to those skilled in the art. In an exemplary embodiment, two-phase transport unit 500 may comprise, for example, but is not limited to, borosilicate alternatives for higher pressures, or other visualization materials well-known to those skilled in the art. In an exemplary embodiment, pneumatic ball valve 531 within curved pipeline section 530 of two-phase transport unit 500 may operate under 1.0-3.0 barg actuation to limit leakage to less than 1% volume during flow diversion, ensuring uninterrupted two-phase gas-solid delivery, as illustrated in FIG. 1. In an exemplary embodiment, two-phase transport unit 500 may comprise, for example, but is not limited to, solenoid-actuated variants for remote control, or other valve types well-known to those skilled in the art.

[0020] In further detail with respect to solid-phase feeding unit 400, solid-phase feeding unit 400 may be mechanically coupled and fluidly connected to two-phase transport line 510, configured to deliver a plurality of solid particles (e.g., powdery or granular materials) into two-phase transport line 510 to form the two-phase gas-solid flow, as illustrated in FIG. 1. In an exemplary embodiment, solid-phase feeding unit 400 may comprise rotary feeder 490 operable within a pressure range of 0.3 to 3.5 barg, with an initial setup for reliable transfer of solids under these conditions. In an exemplary embodiment, an air purge assembly may be integrated with rotary feeder 490 and configured to prevent backflow or leakage of the solid fine particles and the gas phase during operation of solid-phase feeding unit 400 under the pressure range. In an exemplary embodiment, sampling valve 480 may be coupled to the inletREF-1404-02-017of two-phase transport line 510 configured to extract a representative sample of the solid particles entering two-phase transport line 510. In an exemplary embodiment, solid-phase feeding unit 400 may comprise, for example, but is not limited to, a screw feeder, a vibratory feeder, an exemplary combination thereof, or other solid feeding devices well-known to those skilled in the art.

[0021] In further detail with respect to operating conditions of solid-phase feeding unit 400, rotary feeder 490 may achieve a solid loading ratio (SLR) from 5 to 50 by adjusting rotation speed under pressures of 0.3 to 3.5 bar. In an exemplary embodiment, air purge assembly may maintain a purge flow of 0.1 to 0.5 m3 / h to seal against backflow. In an exemplary embodiment, sampling valve 480 may allow extraction of 100-5000 grams of solids for analysis without disrupting flow. In an exemplary embodiment, solid-phase feeding unit 400 may comprise, for example, but is not limited to, automated sampling actuators, or other extraction methods well-known to those skilled in the art. In an exemplary embodiment, the solid loading ratio (SLR) in two-phase transport line 510 of pneumatic conveying system 1000, calculated as solids mass flow (5-50 kg / min from rotary feeder 490) divided by gas flow (1.0-10 kg / min from gas flow control unit 300), may range from 5 to 50 via feeder speed adjustments (10-100 rpm), as illustrated in FIG. 1. In an exemplary embodiment, solid-phase feeding unit 400 may comprise, for example, but is not limited to, mass flow sensors for real-time ratio monitoring, or other calculation methods well-known to those skilled in the art. In an exemplary embodiment, rotary feeder 490 of solid-phase feeding unit 400, with 8 pockets and variable speed drive, may inject solids under 0.3-3.5 barg pressure, sealed by air purge assembly delivering 0.1-0.5 m3 / h to prevent backflow or bridging, as illustrated in FIG. 1. In an exemplary embodiment, solid-phase feeding unit 400 may comprise, for example, but is not limited to, nitrogen purge for inert atmospheres, or other feeder designs well-known to those skilled in the art.REF-1404-02-017

[0022] In further detail with respect to product collection and separation unit 495, product collection and separation unit 495 may be disposed downstream of two-phase transport unit 500 and connected in fluid communication therewith, configured to receive the two-phase gas-solid flow, separate a solid phase from a gas phase, and discharge the gas phase to atmospheric outlet 340 at atmospheric pressure (approximately 1 bar), as illustrated in FIG. 1.In an exemplary embodiment, product collection and separation unit 495 may comprise first product collection tank 410 configured to separate the solid phase from the gas phase upon receipt of the flow from straight pipeline section 540 or curved pipeline section 530. In an exemplary embodiment, first product collection tank 410 may include at least one manual slide gate valve 430 configured to control the solid particles discharge. In an exemplary embodiment, downstream of first product collection tank 410, a reversed flow pulse jet filter assembly implemented as baghouse filter assembly 420 comprising filter bags, accumulation tanks, pulsation solenoids, pule jet tubes, and timer controller may receive and purify the separated gas phase, discharging it to atmospheric outlet 340 with a filtration efficiency of at least 99.9% for solid particles having a size greater than 5 microns. In an exemplary embodiment, baghouse filter assembly 420 may be equipped with an automatic pulse-jet cleaning system, including local timer controller 421, configured to clean the filter bags during operation of the filter assembly. In an exemplary embodiment, the pulse-jet cleaning system may operate by delivering periodic high-pressure air pulses (e.g., via solenoid valves and compressed air accumulation tanks, as labeled in FIG. 1 proximate to baghouse filter assembly 420) to dislodge accumulated particles from the filter bags, thereby maintaining filtration efficiency without interrupting system operation; local timer controller 421 may sequence these pulses based on differential pressure across the bags or timed intervals. In an exemplary embodiment, a second product collection tank 450 may be disposed downstream of first product collection tank 410 (via manual slide gate valve 430 and automatic pneumatic slide gate valve 440)REF-1404-02-017configured to receive the separated solid particles therefrom. In an exemplary embodiment, second product collection tank 450 may be mounted on load cell assembly 446 comprised 3-compression type load cells circumferentially configured at 120° orientation angles with respect to each other and load cell junction box within weight measurement system 445, the load cell assembly configured to measure a weight of second product collection tank 450 (including accumulated particles) and generate a corresponding weight signal based on the measured weight. In an exemplary embodiment, a controller integrated with weight measurement system 445 and operably coupled to automatic pneumatic slide gate valve 440 may receive the weight signal from load cell assembly 446 and regulate the entrance of the solid particles into second product collection tank 450 to maintain particle accumulation within predetermined limits, such as between a minimum weight (e.g., 50 kg to avoid underloading) and a maximum weight (e.g., 200 kg to prevent overflow), ensuring continuous operation and accurate mass balance calculations. In an exemplary embodiment, manual slide gate valve 460 may be provided on second product collection tank 450 to isolate discharge of collected solids. In an exemplary embodiment, product collection and separation unit 495 may comprise, for example, but is not limited to, a cyclone separator, an electrostatic precipitator, an exemplary combination thereof, or other separation devices well-known to those skilled in the art.

[0023] In further detail with respect to operating conditions of product collection and separation unit 495, baghouse filter assembly 420 may achieve 99.9% efficiency for particles >5 microns at gas flows up to 1000 m3 / h, with pulse-jet cleaning activating at differential pressures exceeding 1000 Pa. In an exemplary embodiment, weight measurement system 445 may trigger automatic pneumatic slide gate valve 440 to close when accumulated weight reaches 200 kg, supporting mass balance calculations with ±0.5% accuracy. In an exemplary embodiment, manual slide gate valves 430 and 460 may enable isolated discharge rates of 5-50 kg / min for solids. In an exemplary embodiment, product collection and separation unit 495REF-1404-02-017may direct coarse solids from first product collection tank 410 via manual slide gate valve 430 to second product collection tank 450, while baghouse filter assembly 420 purifies the gas phase downstream with greater than 99.9% efficiency before atmospheric discharge, as illustrated in FIG. 1. In an exemplary embodiment, product collection and separation unit 495 may comprise, for example, but is not limited to, vibratory aids for solids discharge, or other separation enhancements well-known to those skilled in the art. In an exemplary embodiment, load cell assembly 446 of weight measurement system 445, supporting second product collection tank 450, may generate signals with ±0.1 kg resolution to actuate automatic pneumatic slide gate valve 440, closing inflow above 200 kg or enabling drainage below 50 kg for mass balance accuracy of ±0.5%, as illustrated in FIG. 1. In an exemplary embodiment, product collection and separation unit 495 may comprise, for example, but is not limited to, wireless signal transmission for remote monitoring, or other load cell integrations well-known to those skilled in the art. In an exemplary embodiment, manual slide gate valve 430 on first product collection tank 410 of product collection and separation unit 495 may control solids discharge at rates of 5-50 kg / min to second product collection tank 450, facilitating transfer without gas flow interruption, as illustrated in FIG. 1. In an exemplary embodiment, product collection and separation unit 495 may comprise, for example, but is not limited to, lockouttagout mechanisms for safe operation, or other gate valve designs well-known to those skilled in the art. In an exemplary embodiment, baghouse filter assembly 420 of product collection and separation unit 495, featuring 20-30 filter bags with 5-10 micron pore sizes, may achieve at least 99.9% filtration efficiency for particles greater than 5 microns per ISO 5011 standards at gas flows up to 1000 m3 / h, as illustrated in FIG. 1. In an exemplary embodiment, product collection and separation unit 495 may comprise, for example, but is not limited to, differential pressure indicators for maintenance alerts, or other filter media well-known to those skilled in the art. In an exemplary embodiment, the automatic pulse-jet cleaning system of baghouse filterREF-1404-02-017assembly 420, governed by local timer controller 421, may deliver 4-6 bar air pulses (0.1-0.2 second duration) every 5-10 minutes or upon differential pressure exceeding 1000 Pa to sustain filtration efficiency, as illustrated in FIG. 1. In an exemplary embodiment, product collection and separation unit 495 may comprise, for example, but is not limited to, timed or sensor-triggered sequencing, or other cleaning methods well-known to those skilled in the art.

[0024] In further detail with respect to gas recovery unit of pneumatic conveying system 1000, gas recovery unit may be configured to collect the separated gas phase discharged from baghouse filter assembly 420 and recirculate the collected gas back to gas pressure supply unit 100, as illustrated in FIG. 1. In an exemplary embodiment, gas recovery unit may comprise a recirculation line from atmospheric outlet 340 to gas pressure supply unit 100, promoting closed-loop efficiency. In an exemplary embodiment, gas recovery unit may include, for example, but is not limited to, a compressor for re-pressurization, a buffer tank, an exemplary combination thereof, or other recovery devices well-known to those skilled in the art. In an exemplary embodiment, recirculation may recover at least 90% of the gas phase, reducing emissions and operational costs. In an exemplary embodiment, gas recovery unit may comprise, for example, but is not limited to, moisture separators for gas purity, or other recovery components well-known to those skilled in the art.

[0025] The foregoing description provides a detailed illustration of pneumatic conveying system 1000 as embodied in FIG. 1, enabling a person of ordinary skill in the art (POSITA) to construct and operate the invention without undue experimentation, consistent with one or more exemplary embodiments of the present disclosure. In an exemplary embodiment, the intelligent interlock system of pneumatic conveying system 1000, implemented via a central programmable logic controller (PLC) unit, may integrate signals from pressure transmitters (111, 121, 550), flow meter 330, and temperature transmitters (112, 122) to close valves (e.g., 320, 440), valves positions via signals from relevant proximity switches (115, 125, 320, 520,REF-1404-02-017531), weight signals (445), and activate alarms upon unauthorized conditions such as pressure exceeding 3.0 barg, flow below 2 m / s, or temperature above 50°C, ensuring compliance with ASME B31.3 standards, as illustrated in FIG. 1. In an exemplary embodiment, pneumatic conveying system 1000 may comprise, for example, but is not limited to, redundant PLC backups for fault tolerance, or other safety interlock configurations well-known to those skilled in the art.

[0026] While the foregoing has described what are considered to be the best mode and / or other examples, it is understood that various modifications may be made therein and that the subject matter disclosed herein may be implemented in various forms and examples, and that the teachings may be applied in numerous applications, only some of which have been described herein. It is intended by the following claims to claim any and all applications, modifications and variations that fall within the true scope of the present teachings.

[0027] Unless otherwise stated, all measurements, values, ratings, positions, magnitudes, sizes, and other specifications that are set forth in this specification, including in the claims that follow, are approximate, not exact. They are intended to have a reasonable range that is consistent with the functions to which they relate and with what is customary in the art to which they pertain.

[0028] The scope of protection is limited solely by the claims that now follow. That scope is intended and should be interpreted to be as broad as is consistent with the ordinary meaning of the language that is used in the claims when interpreted in light of this specification and the prosecution history that follows and to encompass all structural and functional equivalents. Notwithstanding, none of the claims are intended to embrace subject matter that fails to satisfy the requirement of Sections 101, 102, or 103 of the Patent Act, nor should they be interpreted in such a way. Any unintended embracement of such subject matter is hereby disclaimed.REF-1404-02-017

[0029] Except as stated immediately above, nothing that has been stated or illustrated is intended or should be interpreted to cause a dedication of any component, step, feature, object, benefit, advantage, or equivalent to the public, regardless of whether it is or is not recited in the claims.

[0030] It will be understood that the terms and expressions used herein have the ordinary meaning as is accorded to such terms and expressions with respect to their corresponding respective areas of inquiry and study except where specific meanings have otherwise been set forth herein. Relational terms such as first and second and the like may be used solely to distinguish one entity or action from another without necessarily requiring or implying any actual such relationship or order between such entities or actions. An element proceeded by “a” or “an” does not, without further constraints, preclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0031] Unless otherwise stated, all measurements, values, ratings, positions, magnitudes, sizes, and other specifications that are set forth in this specification, are approximate, not exact. They are intended to have a reasonable range that is consistent with the functions to which they relate and with what is customary in the art to which they pertain.

[0032] It will be understood that the terms and expressions used herein have the ordinary meaning as is accorded to such terms and expressions with respect to their corresponding respective areas of inquiry and study, except where specific meanings have otherwise been set forth herein. Relational terms such as “first” and “second” and the like may be used solely to distinguish one entity or action from another without necessarily requiring or implying any actual such relationship or order between such entities or actions.

[0033] The Abstract of the Disclosure is provided to allow the reader to quickly ascertain the nature of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. In addition, in the foregoingREF-1404-02-017Detailed Description, it may be seen that various features are grouped together in various implementations. This is for purposes of streamlining the disclosure, and is not to be interpreted as reflecting an intention that the claimed implementations require more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive subject matter lies in less than all features of a single disclosed implementation. Thus, the following claims are hereby incorporated into the Detailed Description, with each claim standing on its own as a separately claimed subject matter.

[0034] While various implementations have been described, the description is intended to be exemplary, rather than limiting and it will be apparent to those of ordinary skill in the art that many more implementations and implementations are possible that are within the scope of the implementations. Although many possible combinations of features are shown in the accompanying figures and discussed in this detailed description, many other combinations of the disclosed features are possible. Any feature of any implementation may be used in combination with or substituted for any other feature or element in any other implementation unless specifically restricted. Therefore, it will be understood that any of the features shown and / or discussed in the present disclosure may be implemented together in any suitable combination. Accordingly, the implementations are not to be restricted except in light of the attached claims and their equivalents. Also, various modifications and changes may be made within the scope of the attached claims.

Claims

REF-1404-02-017What is claimed is:

1. A system configured to conduct a two-phase gas-solid conveying test under controlled pressure and flow conditions, the system comprising:a gas pressure supply unit comprising:at least one gas pressurizing device configured to receive and pressurize a gas stream and deliver the pressurized gas stream to a gas inlet line;a cooling unit disposed at a downstream of the gas pressure supply unit and connected in fluid communication therewith, the cooling unit configured to regulate a temperature of the pressurized gas stream;a gas flow control unit disposed at a downstream of the cooling unit and connected in fluid communication therewith, the gas flow control unit configured to regulate either a flow rate and a velocity of the pressurized gas stream through the gas inlet line, the gas flow control unit comprising:at least one flow measuring device; andat least one flow regulating valve;a two-phase transport unit disposed at a downstream of the gas flow control unit and connected in fluid communication therewith, the two-phase transport unit comprising:a two-phase transport line configured to convey a two-phase gas-solid flow; andat least one pressure monitoring device disposed along the two-phase transport line and configured to monitor pressure drop during the two-phase gassolid conveying test;REF-1404-02-017a solid-phase feeding unit mechanically coupled and fluidly connected to the two- phase transport line, the solid-phase feeding unit configured to deliver a plurality of solid particles into the two-phase transport line to form the two-phase gas-solid flow; and a product collection and separation unit disposed at a downstream of the two-phase transport unit and connected in fluid communication therewith, the product collection and separation unit configured to receive the two-phase gas-solid flow, separate a solid phase from a gas phase, and discharge the gas phase to an atmospheric outlet.

2. The system of claim 1, wherein the at least one gas pressurizing device comprises an oil- free roots blower and an oil-free screw compressor arranged in parallel fluid communication with one another, wherein each of the blower and the compressor has a corresponding manual isolation valve and a check valve which are configured to prevent backflow.

3. The system of claim 1, wherein the gas flow control unit further comprises an automatic control valve configured to maintain a predetermined flow rate based on pressure measurements received from the at least one pressure monitoring device, flow measurements received from the at least one flow measuring device, or both.

4. The system of claim 3 further comprising a temperature and pressure transmitter assembly configured to measure temperature and pressure at a downstream location of both the gas pressure supply unit and the gas flow control unit.

5. The system of claim 3, wherein the gas flow control unit further comprises a proportional- integral-derivative (PID) controller configured to automatically adjust the flow rate of the gas stream based on measurement signals received from the flow measuring device, and to record the measured flow data for subsequent control adjustments.

6. The system of claim 1, wherein the two-phase transport unit further comprises:REF-1404-02-017a straight pipeline section disposed in the two-phase transport line, the straight pipeline section having no elbows;a curved pipeline section disposed in the two-phase transport line; wherein the curved pipeline section has a greater length, a larger diameter, and at least one bend with r / D>5 compared to the straight pipeline section; anda diverter valve configured to selectively direct the two-phase gas-solid flow either toward the straight pipeline section or toward the curved pipeline section.

7. The system of claim 6, wherein the curved pipeline section comprises a pneumatic ball valve disposed therein to facilitate delivery of the two-phase gas-solid flow.

8. The system of claim 1, wherein the product collection and separation unit comprises:a first product collection tank configured to separate the solid phase from the gas phase;a reversed flow pulse jet filter assembly disposed downstream of the first product collection tank and configured to receive and purify the separated gas phase from the first product collection tank; anda second product collection tank disposed at a downstream of the first product collection tank and configured to receive the separated solid particles therefrom.

9. The system of claim 8, wherein the product collection and separation unit further comprises: a load cell assembly on which the second product collection tank is mounted, the load cell assembly configured to measure a weight of the second product collection tank and generate a corresponding weight signal based on the measured weight; and a controller configured to receive the weight signal from the load cell assembly and regulate the entrance of the solid particles into the second product collection tank to maintain particle accumulation within predetermined limits.

10. The system of claim 8, wherein the first product collection tank comprises at least one manual slide gate valve configured to control the solid particles discharge.REF-1404-02-01711. The system of claim 8, wherein the filter assembly is a baghouse filter assembly comprising filter bags, accumulation tanks, pulsation solenoids, pule jet tubes, and timer controller, the reversed flow pulse jet filter assembly is configured to discharge the separated gas phase with a filtration efficiency of at least 99.9% for solid particles having a size greater than 5 microns separated from the two-phase gas-solid flow.

12. The system of claim 11, the product collection and separation unit further comprises an automatic pulse-jet cleaning system with a local timer controller configured to clean the filter bags during operation of the filter assembly.

13. The system of claim 11 further comprising a gas recovery unit configured to collect the separated gas phase discharged from the filter assembly and recirculate the collected gas back to the gas pressure supply unit.

14. The system of claim 1, wherein the cooling unit comprises:a primary heat exchanger configured to receive the pressurized gas stream from the gas inlet line and cool the pressurized gas stream to a predetermined temperature before delivering the gas stream to the gas flow control unit;an automatic temperature control system configured to adjust the temperature of the gas stream exiting the primary heat exchanger to a predetermined target temperature;a secondary heat exchanger arranged in series with the primary heat exchanger and configured to cool a coolant fluid exiting the primary heat exchanger;a coolant storage tank configured to receive the cooled coolant fluid from the secondary heat exchanger; anda coolant circulation pump configured to circulate the coolant fluid from the coolant storage tank back to the primary heat exchanger.

15. The system of claim 14, wherein the primary heat exchanger is a shell -and-tube heat exchanger, the secondary heat exchanger is an air-cooled heat exchanger, and the coolant fluid comprises water.REF-1404-02-01716. The system of claim 1, wherein the solid loading ratio (SLR) in the two-phase transport line ranges from 5 to 50.

17. The system of claim 1, wherein a gas entry velocity at the two-phase transport line ranges from 3 to 30 meters per second.

18. The system of claim 1 further comprising a sampling valve configured to extract a representative sample of the solid particles entering the two-phase line.

19. The system of claim 1, wherein the solid phase feeding unit comprises:a rotary feeder configured to deliver the solid particles into the two-phase transport line, wherein the rotary feeder is operable within a pressure range of 0.3 to 3.5 barg, and an air purge assembly configured to prevent backflow or leakage of the solid fines particles and the gas phase during operation of the solid-phase feeding unit under the pressure range.

20. The system of claim 1, wherein at least a portion of the two-phase transport line is transparent configured to enable visual detection and observation of the two-phase gassolid flow.

21. The system of claim 1 further comprising an intelligent interlock system configured to ensure operational safety by preventing errors caused by unauthorized pressure or flow conditions during the two-phase gas-solid conveying test.

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