MERCURY RECOVERY DEVICE AND MERCURY RECOVERY METHOD

• Main Authors: FUJINAGA YUTA, FUJIWARA MASASHIGE
• Format: Patent
• Language: English; Japanese
• Published: 21.06.2018
• Subjects: BLASTING; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS,IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KINDOF FURNACE; FERROUS OR NON-FERROUS ALLOYS; FURNACES; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HEATING; KILNS; LIGHTING; MECHANICAL ENGINEERING; METALLURGY; OVENS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; RETORTS; SEPARATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WEAPONS

PROBLEM TO BE SOLVED: To reduce an amount of mercury discharged into ambient air by efficiently recovering mercury contained in gas.SOLUTION: A mercury recovery device 100 that recovers mercury from a gas flowing in a flow path 1 from an upstream to a downstream includes :a raw material recovery vessel 12 for recovering a solid raw material from a mixed gas containing mercury-containing gas and an unburned portion; an extraction part 13 for extracting mercury-containing gas flowing the flow path P1 on a downstream of the raw material recovery vessel 12; a mercury recovery part 10 for recovering a mercury adsorbent that has absorbed mercury contained in mercury-containing gas by mixing the mercury-containing gas extracted at the extraction part 13 and the mercury adsorbent; a dust collector 15 for collecting raw material dust containing mercury in the mercury-containing gas flowing the flow path P1 at a temperature lower than the mixed gas on the downstream of the extraction part 13; and a flow path P5 for converging the raw material dust and the gas flowing the flow path P1 on the upstream side of the raw material recovery vessel 12.SELECTED DRAWING: Figure 1 【課題】ガスに含まれる水銀を効率よく回収して大気中に放出される水銀の量を低減すること。【解決手段】流路Ｐ１を上流から下流に向かって流通するガスから水銀を回収する水銀回収装置１００であって、水銀含有ガスと未燃分を含む固体原料とを含有する混合ガスから、固体原料を回収する原料回収器１２と、原料回収器１２の下流において流路Ｐ１を流通する水銀含有ガスを抽気する抽気部１３と、抽気部１３で抽気される水銀含有ガスと水銀吸着材とを混合して、水銀含有ガスに含まれる水銀を吸着した水銀吸着材を回収する水銀回収部１０と、抽気部１３の下流において、混合ガスよりも低い温度で流路Ｐ１を流通する水銀含有ガス中の水銀を含む原料ダストを集塵する集塵器１５と、原料ダストを、原料回収器１２の上流側において流路Ｐ１を流通するガスに合流させる流路Ｐ５と、を備える。【選択図】図１