C01C1/02—Preparation, purification or separation of ammonia
C01C1/04—Preparation of ammonia by synthesis
C01C1/0405—Preparation of ammonia by synthesis from N2 and H2 in presence of a catalyst
C01C1/0417—Preparation of ammonia by synthesis from N2 and H2 in presence of a catalyst characterised by the synthesis reactor, e.g. arrangement of catalyst beds and heat exchangers in the reactor
F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
F16J—PISTONS; CYLINDERS; SEALINGS
F16J13/00—Covers or similar closure members for pressure vessels in general
F16J13/02—Detachable closure members; Means for tightening closures
F16J13/10—Detachable closure members; Means for tightening closures attached by means of a divided ring
Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
Y02P20/00—Technologies relating to chemical industry
Y02P20/50—Improvements relating to the production of bulk chemicals
Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Ensemble pour la realisation d'un joint filete pour le forage et l'exploitation des puits d'hydrocarbures, joint filete et procede de realisation d'un tel joint
Elektromagnetisches ventil, verfahren zum anbringen einer solenoidspule an dem elektromagnetischen ventil und verfahren zum ablösen der solenoidspule von diesem elektromagnetischen ventil