The ca 3 is also provided with a passage 23 whic communicates with the chamber 17 throu h a passage 24 for the introduction of the catalytic a ent, the passage 23 being normally closed ygra lug 25 inserted in t e openine in the cap 3. In the operation of my device, the mixture portions is supplied by a supply pipe 36 and passes byapassage 37 in the cap 2 to a assage 38 in the plug 9 which communicates with both passages 13 and The mixture then passes through the passage 14 to the passage 32 in the plug 10 which communicates with the chamber 18 in which the gases are heated by contact with the resistance element From the chamber I 18 the gases pass to the chamber 17 where the no the ammonia gas is con heated gases come in contact with the catalytlc agent and the union of the gases is efiected.
It will be noted that the hot gases leaving the chamber 17 in which the catalytic action takes place pass out through the pas- 15 sage 15 while the cooler gases bein supplied to the heating element 19 will fi the passage 13 and will pass through the passage 14 which is separated from the passage 15 only by the corrugated sheet metal tube 8 so that the incoming gases are heated to a considerable extent while the outgoing gases are cooled thus contributing to the final cooling and condensing of the ammonia gas and making it possible to reduce the amount of cooling apparatus that has heretofore been necessary.
In this construction the passage 13 may be placed in communication 'with the passage 14 by means of openings 39 in the tube 12, ad acent to plug 10, as.
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Providing the openings 39 in the tube 12 permits of a stream of the cool gases assing through thepassage 13 which is an e ective means for insulating the tube 1 from the heat of the catalytic as chamber. In some cases it may be necessary.
From the passa e 13 the gases will pass around the thence into the chambers 18 and Sup plyin the gases in this manner will also provi e a. As shown in this figure a layer 4. In an apparatus for the synthesis of ammonia, a ressure sustaining tube having a chain r therein, a second tube mounted in said chamber, plu 'closing the ends of said second tube, a tu emounted on one of said lugs and surrounding said second tube an other of said plugs and surrounded by mid second tube.
In an apparatus for the synthesis of ammonia, a pressure sustaining tube havin a catalytic chamber, means surround said catalytic chamber with the heates ases discharged from.
In an apparatus for the synthesis of ammonia, a pressure sustaining tube having a catalytic chamber, an annular pass a tube mounted on the. In an apparatus for the sn hesis of. In an apparatus for the synthesis of ammonia, a pressure sustaining tube having a catalytic c amber therein, a gas inlet passage in said catalytic chamber, an annular discharge passage surrounding said catalytic chamber, means for heatin the gases supplied to said catalytic cham er by the gases in said discharge passage and means whereby the gases supplied to said catalytic chamber insulate the pressure sus tainin tube from the heat of the gases heate by the discharged gases.
Application filed June 26, Serial No. To all whom it may concern:. In this construction the passage 13 may be placed in communication 'with the passage 14 by means of openings 39 in the tube 12, ad acent to plug 10, as so shown in dotted lines. In testimony whereof I have hereunto i signed my name. Witnesses: G. A number of knives are mounted on an implement tool bar and spaced on the bar at intervals perpendicular to the direction of travel over the field.
A delivery tube, typically mounted on the rear edge of each knife, carries anhydrous ammonia from an implement storage tank and discharges it at an outlet below the surface of the soil. As the implement travels forward over the field, each knife cuts a furrow in front of the delivery tube discharge and a regulated amount of ammonia is deposited in the furrow.
To avoid loss of the ammonia gas, it must be promptly and effectively entrapped in the soil. Those concerned with these and other problems recognize the need for an improved anhydrous ammonia knife.
The present invention provides an anhydrous ammonia knife including a shank attached to an implement tool bar, a knife segment attached to the forward edge of the shank, and an ammonia delivery tube disposed between the forward edge of the shank and the leading edge of the knife segment.
The knife selectively penetrates the soil to a predetermined depth and the tube discharge end is disposed in fluid communication with the soil.
Chapter Refrigeration, Mechanical Code of Tennessee | UpCodes
Ammonia is discharged into the soil at a position immediately behind the leading edge of the knife segment as the furrow is first opened. This positioning minimizes the amount of ammonia vapor lost to the atmosphere since the ammonia is quickly entrapped in the soil.
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These and other attributes of the invention will become more clear upon a thorough study of the following description of the best mode for carrying out the invention, particularly when reviewed in conjunction with the drawings, wherein:. Referring now to the drawings, wherein like reference numerals designate identical or corresponding parts throughout the several views, FIG. The tool bar 12 is mounted on an implement not shown and is carried in a forward direction, generally indicated by the arrow 14 , through the soil 16 having an upper surface Although only a single knife 10 is shown in the drawings, it is to be understood that a number of such knives 10 may be mounted in spaced intervals along the tool bar Since the knives 10 are identical in construction, only one is shown and described.
As best shown in FIGS. The shank 20 could, of course, be curved forwardly or rearwardly rather than being straight as illustrated in the drawings. The following edge 34 of the shank 20 has a number of vertically spaced slots 36 formed therein.
A sealer plate 40 is received in one of the slots 36 and secured in position by a suitable means such as welding. The sealer plate 40 is disposed rearwardly and laterally of the shank 20 and the trailing edge 42 contacts the soil surface 18 to completely close the furrow formed in the soil 14 by the ammonia knife Referring now to FIGS. The knife segment 50 includes a leading edge 52 and spaced lateral sides 54 and The spaced lateral sides 54 and 56 extend rearwardly and overlap the lateral sides 26 and 28 of the shank 20 and form a cavity The lower section 62 of the knife segment 50 includes open channels 64 and 66 having downwardly and laterally directed beveled surfaces 65 and An ammonia delivery tube 70 is disposed within the cavity 58 and has an upper end 72 connected by a hose 74 to an ammonia supply tank not shown , and a lower end 76 disposed in fluid communication with the open channels 64 and 66 and with the soil The operation of the anhydrous ammonia knife 10 of the present invention is believed to be readily apparent and is now briefly summarized.
US5452673A - Anhydrous ammonia knife - Google Patents
The ammonia knife 10 is attached to the tool bar 12 and is moved through the soil 16 in the direction of the arrow 14 by a prime mover not shown. As the ammonia knife 10 moves forward, a narrow furrow is formed at a predetermined depth in the soil The sealer plate 40 is secured to the shank 20 in the one of the available slots 36 that corresponds to the desired predetermined depth.
For example, as illustrated in FIG. If a lesser depth was desired, the sealer plate 40 would have been secured to the shank 20 in one of the lower slots As the furrow is opened by the leading edge 52 of the knife segment 50 , anhydrous ammonia is injected into the soil 16 at a position immediately behind the leading edge The open channels 64 and 66 and the beveled surfaces 65 and 67 act to direct the ammonia laterally into the sides of the newly formed furrow where the ammonia is quickly and effectively entrapped in the soil This minimizes the loss of ammonia vapor into the atmosphere.
Obviously, many modifications and variations of the present invention are possible in light of the above teachings.