ガスクロマトグラフを使用したグリッド注入のためのバイオメタンガス品質分析
信頼性の高い組成分析で、バイオメタングリッド噴射基準を充足
コストを削減し、天然ガスでのバイオメタンの互換性を保証
バイオガスの洗浄とバイオメタン/再生可能天然ガス(RNG)へのアップグレードには、さまざまな技術が使用されています。技術のアップグレード技術の目的とは、高メタン純度、低メタン損失量そして低エネルギー消費量を達成することです。生産技術とバイオガス供給原料は、バイオメタンの組成に影響を及ぼします。バイオガスの供給原料は、食品廃棄物、埋め立て地ガス、畜産廃棄物、廃水処理、作物残渣で構成することができます。
バイオメタンをグリッドに供給する際は、ガスの品質とエネルギー量を測定し、これらの値の精度を確認する必要があります。ガスクロマトグラフ (GC) は、バイオメタンの組成分析を特定し、品質、発熱量、ウォッベ指数を監視する信頼性の高い方法です。Emerson は、バイオメタン分析のニーズに対応する 2 つのガスクロマトグラフソリューションを提供しています。これらの GC は、産業および国内の計量基準に沿って認定されています。
クリックして続きを読む コストを削減し、天然ガスでのバイオメタンの互換性を保証
製品ソリューション
Designed for optimum reliability and flexibility, the Rosemount 700XA Process GC provides extended gas composition analysis with remote operation capabilities in an explosion-proof, field-mountable design. This reduces the need for elaborate analyzer shelters or temperature control requirements. Whether it is heating value measurement, trace contaminant monitoring, or product quality and process control, the Rosemount 700XA offers the flexibility to combine measurements in a single, transmitter-style GC, reducing footprint and total cost of ownership.
- Industry's first transmitter-style gas chromatograph capable of combining the measurement of natural gas energy content, hydrogen sulfide, speciation of total sulfur compounds to trace levels, and hydrocarbon dew point (HCDP) calculations in a single-analyzer solution
- Explosion-proof and ATEX/IECEX safety rating enables field installation without enclosure even in Class 1, Division 1 areas
- No instrument air for purge or oven required, reducing power consumption over traditional air purged GC units
Input
Analog Intputs: Six self-powered isolated outputs (4–20 mA)
Digital inputs: Five inputs, user assignable, optically isolated, rated to 30V DC @ 0.5 A
Digital inputs: Five inputs, user assignable, optically isolated, rated to 30V DC @ 0.5 A
Output
Analog outputs: Six self-powered isolated outputs (4–20 mA)
Digital outputs: Five user-assignable outputs, Form C and electromechanically isolated, 24V DC
Digital outputs: Five user-assignable outputs, Form C and electromechanically isolated, 24V DC
Communication Protocol
Ethernet: Two ports – one RJ-45 and one four-wire – with 10/100 mbps
Serial: Three termination blocks, configurable as RS-232, RS-422 or RS-485 and one RS-232 D-sub (9-pin) Modbus/PC Connection
Serial: Three termination blocks, configurable as RS-232, RS-422 or RS-485 and one RS-232 D-sub (9-pin) Modbus/PC Connection
Rosemount 770XA Natural Gas Chromatographs provide the most accurate analysis of natural gas available in a field mounted gas chromatograph (GC). The 700XA features a design that increases analytical capability, maximizes ease of use, and widens the range of analysis options in a GC with an ambient temperature rating of -20 °C to 60 °C/ -4 °F to 140 °F. These enhanced features make the 700XA ideal for natural gas custody transfer and applications requiring advanced analysis such as C9+ (with hydrocarbon dew point and cricondentherm calculations) and C6+ with hydrogen sulfide (H2S).
- Best C6+ heating value/BTU repeatability available
- ± / -0.01 % (± / -0.1 BTU/1000 BTU) in temperature controlled environment
- ± / 0.02% (± / -0.2 BTU/1000 BTU) in uncontrolled environment (-20° to 60 °C/-4° to 140 °F) with a three minute cycle time
Input
Analog inputs: Two standard isolated inputs filtered with transient protection, 4–20 mA (user scalable and assignable)
Digital inputs: Five inputs, user assignable, optically isolated, rated to 30V DC @ 0.5 A
Digital inputs: Five inputs, user assignable, optically isolated, rated to 30V DC @ 0.5 A
Output
Analog outputs: Six self-powered isolated outputs (4–20 mA)
Digital outputs: Five user-assignable outputs, Form C and electromechanically isolated, 24V DC
Digital outputs: Five user-assignable outputs, Form C and electromechanically isolated, 24V DC
Ports
Serial Communication Ports: Three termination blocks, configurable as RS-232, RS-422 or RS-485 and one RS-232 D-sub (9-pin) Modbus/PC Connection
