正確なガス分析で天然ガスネットワークに特殊な水素ブレンディングを実施
ガスクロマトグラフを使用して、水素と天然ガスの完全な混合流量を確実に追跡し検証
天然ガスパイプラインへの水素注入の制御と監視
既存の天然ガスパイプラインネットワークに水素（H2）を混合することは、二酸化炭素排出量を削減し、エネルギー源としてクリーンな水素への移行を加速させる有効な手段です。ただし、水素は天然ガスと異なる熱物性を持っているので、パイプライン品質のガス仕様内で完全なブレンドを維持するために、パイプラインに注入される量はガス全体の容量の 20% を下回る必要があります。これにより、ネットワークの完全性を保護し、公共の安全上のリスクを軽減し、産業用または発電機器や家庭ボイラやストーブを含むエンドユースシステムの修正要件を排除することができます。
パイプラインへの H2 濃度注入の信頼性の高い制御と監視には、適切な分析計を使用することが重要です。Rosemount 700XA ガスクロマトグラフは、ブレンドした完全なストリーム、発熱量、ウォッベ指数の組成分析を行うことで、最初のブレンドポイントからネットワーク全体のガス品質の変化を追跡します。
クリックして続きを読む 天然ガスパイプラインへの水素注入の制御と監視
製品ソリューション
Rosemount 770XA GC は、防爆仕様の送信機スタイルのフィールドマウント型ガスクロマトグラフで、天然ガスの最も正確な分析を提供します。
- 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
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
