US894507A

US894507A - Method and apparatus for utilizing the heat from cement clinkers.

Info

Publication number: US894507A
Application number: US24973505A
Authority: US
Inventors: Tom Cobb King
Original assignee: NAT METALLURG Co
Current assignee: NATIONAL METALLURGIC Co; NAT METALLURG Co
Priority date: 1905-03-13
Filing date: 1905-03-13
Publication date: 1908-07-28
Anticipated expiration: 1925-07-28

Description

No. 894,507. PATENTED JULY 28, 1908.

' T. 0. KING-.

METHOD AND APPARATUSFOR UTILIZING THE HEAT FROM CEMENT GLINKERS.

APPLIOATION FILED MAR. 13. 1905.

3 SHEETS-SHEET 1.

WITNESSES:

wow mm 447% INVENTOR 1 V 0. KING. PATENTED JULY 23, 1908, METHOD AND APPARATUS FOR UTILIZING THE HEAT PR CEMENT GLINKBRS. APPLIOATION FILED MAE.13. 1905.

3 SHEETS-SHEET 2.

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131' lulv Altar-1121' No. 894,507 'PATENTED JULY 28, 1908. T. 0.11m. METHOD AND APPARATUS FOR UTILIZING THE HEAT' FROM CEMENT GLINKBRS.

APPLICATION FILED MAR.13. 1906. 3 SHEETS SHBET a YINVENTOR B1 Mr Hiram-qr, W

M QM n 4 Km RN UNITED STATES FATE-"NT onnron.

TOM COBB KING, OF NEW YORK, N. Y., ASSIGNOR TO NATIONAL METALLURGIG COMPANY, OF JERSEY CITY, NEW JERSEY, A CORPORATION OF NEW JERSEY.

METHOD AND APPARATUS FOR UTILIZING THE HEAT FROM CEMENT CL INKERS.

, new and useful Improvements in Methods and Apparatus for Utilizing the Heat from Cement Olinkers and Nodules Made from Metalliferous Masses, of which the following is a specification. 7

My invention relates to an improvement in method of and apparatus for utilizing heat contained in the products of rotary kilns, and particularly that class of'kilns used in connection with the manufacture of cement, clinkers and nodules from metalliferous masses; and the invention relates particularly to a method whereby the heat contained in such products is withdrawn from the same and then utilized in the process conducted in the kiln, as well as in any other convenient manner. In general practice, the cement, clinkers o1- nodules, which are discharged from such rotary kilns, is heated to 2000 Fahrenheit and upwards. The product is cooled and disposed of without any utilization of its latent heat, Whereas this method involves the utilization of the heat contained in the product prior to the final disposition of the same.

The invention will be best understoodby reference to the accompanying sheet of drawings, forming a part of this specification, in which Figure 1 is a vertical elevation of the apparatus shown in connection with a rotary kiln. Fig. 2 is a vertical section 'of the heat extractor and the conveyer. Fig. 3 is a plan view of the heat extractor shown in Fig. 2. Fig. 4 is a modified form of heat extractorJ Similar letters of reference indicate similar parts throughout the several views.

In Fig. 1 of the drawings, 1 indicates a cylindrical retort or kiln, the interior of which is lined with fire brick or other refractory material. The retort is provided with a number of tires 2-2, which are riveted or otherwise suitably secured upon the exterior thereof and adapted to operate u on the rollers 33, which are journaled in earings formed in the brackets or supports 4-4, the said suports being secure upon the piers 5-5.

he said retort is also provided with alarge Specification of Iietters Patent. Application filed March 18, 1905. Serial no. 249,735.

Patented. July 28, 1908.

cog wheel 6, which is suitably secured u on the exterior thereof and meshes with an receives power from the pinion 7, which is driven by-any suitable power. One of the bearings for said gearing is secured to one of said piers. The lower end of said kiln or re-- tort terminates at the inner end of the hood 8, which is mounted on the truck 9, which is adapted totravel on the tracks or ways 10, whereby the position of the hood may be changed with relation to the end of said kilnfor any necessary purpose. The head or closed end of said hood is rovided with two orifices, through one of w ich the fuel is introduced to the furnace by means of the blow pipe 11 from the fuel tank 12, and through the second of saidorifices the pro-heated air, saved from the products is introduced into said furnace through the ipe 15. The upper end of said kiln, w ich is somewhat higher than the lower end thereof, projects into the base of the stack 13, the said end being open and in communication with a material feed pipe 14, which projects through the base of said stack into the kiln for the purpose of charging the same. The discharge of the product at the lower end of the kiln is effected through an opening 17 shown in dotted lines in Fig. 1. The material thus discharged through said opening falls into-a heat extractor through the funnel shape opening 23 at the top of the same as shown inFigs. 1 and 2. Y

The interior construction of the heat extractor is shown in Fi 2. The said extractor consists of a meta lic cylinder composed of interior and

exterior shells

24 and 25 respectively between which an air or water space 26 is formed. The interior cylinder incloses a space for the reception of the heated material charged therein from the rotary kiln. In the center of said space and coinciding in height to the .cylinder 24 is an .air chamber 27 which is connected with the central space of the heat extractor through the pipe 15 in which a controlling valve 32 is located. When it is desirable to utilize any other purpose, the pre-heated air or water discharged through pipe 15 may be conducted to another convenient point than that heretofore specified. The inlet and

outlet pipes

29 and 15 respectively are much smaller in area than the

chambers

26 and 27 shown in the drawings, so that the air or water entering and being discharged therefrom has a greater velocity and pressure than through the chambers where the .ra-

'pidity of the flow of the same is greatly reduced.

The cylinder 24 terminates at the base in a cone shaped projection 33, which is provided with an o ening 34 through which the product is discharged upon the buckets of the conveyer 18, which is adapted to carry the cooled product to a receiving bin 1.9. The contents ofsaid conveyer are discharged into said receiving bin, and if necessary further cooled by a spray of water from the sprayer 20, which terminates the end of the water supply pipe 21. A car 22 is located below the receiving tank in position-to receive the cooled product.

In Fig. 4 of the drawings I show a modified form of heat extractor in which two .cylinders 24 are employed, differing in construction from that shown in Fig. 2 in that the modified form of extractor comprises a sin 1e cylinder instead of two, as shown in said Flg. 2. These cylinders are closed at the top by the ordinary bell and hop er mechanism 35 as shown, and the prodhct of the kiln is introduced into said cylinders alternately by means of a chute, t e direction of which may be changed de ending upon which of the cylinders 24 1s being charged from the rotary kiln, the bell and hopper mechanism being 0 era ted in the usua manner to effect the ling or charging. The discharge from said cylinders is accom lished by removing plates .36 which close t e discharge opemng in the bottom of the cylinders respectively, the said plates being held in place by bolts 37 and the swiveled bolt 38, or in any other suitable manner.

Air or water is introduced through the pipe 29 in the same manner as in the construction shown in Figs. 1 and 2, the admission thereof being controlled by the valve 30. In this construction the air and water is brought into direct contact with the heated product charged into the different cylinders. lhe cylinders are connected at the top by the pipe 15 which unite in a main pipe 15 whereby the pre-heated air is conducted back, in case air is employed, into the rotary kiln or the heated water or air may be used for any other purpose, and maybe carried off for further disposition to any convenient point. Valve 32' performs the same function as valve 32 in the'construction illustrated in Fig. 2. When it is desired to discharge the contents of the rotary kiln, or a portion thereof into either of said cylinders 24 dependingupon which ofthe cylinders are being charged, the bell and hopper mechanism is properly operated to permit the contents or a portion of the contents of the rotary kiln to be charged into said cylinder, and when the same is charged completely the bell is drawn up. The air or water admitted as heretofore specified comes into direct contact with the heated product just discharged into said cylinder, and is raised by contact therewith to a high degree of temperature, and asses out through the discharge pipe 15 as -eretofore specified.

The interior of the chambers 24 respectivelyis provided with bafiie plates 40 for the purpose of preventing the products charged therein from passing into the ipes 29and 15 respectively. After the pro ucts have been specially cooled with contact with air or water it is discharged into cars 22, placed upon tracks the same way, as shown in Fig. 1. In this form of my apparatus one of the chambers may be in condition for being charged while the other is cooling the product charged therein.

Having claim an is described my invention what I desire to secure by Letters Patent 1. The herein described method of utilizing the heat contained in cement clinkers, and nodules formed from metalliferous masses,- etc. which consists in discharging the said products from the receptacle in which they are heated and formed into a suitable chamber and passing a suitable heat absorbing medium through the same, charging similar products into a similar chamber for the purpose of heating the same, while the heat absorbing medium is being passed throu h the first chamber, and then passing a suitab e heat absorbing substance through the said second chamber for the absorbing the heat, and then uti izing the heat absorbing medium as it goes from said chamber in any of the manners set forth.

2. The combination of a rotary kiln, a plurality of chambers into which the products formed in the kiln are charged, means for alternately introducin the charge into the chambers, means for a ternately introducing the heat absorbing medium into the chamurpose of here after said chambers have been heated by my invention, I have signed my name in the charge, and devices substantially as depresence of two witnesses, this eleventh day scribed for dischar ing the contents of said of March, 1905. a chambers and Wit drawin from each the TOM COBB KING. 5 heat absorbing medium an conducting the Witnesses:

same to apoint Where it may be utilized. WILLARD PARKER BUTLER.

In testimony, that I claim the foregoing as JOHN FRENCH,