Column Throughput Increased by . Pressure Drop Control No matter what type of column you operate . . . packed, bubble cap or sieve plate . . . a single, simplified con trol system now will permit you to get maximum throughput . . . hold over loading to a minimum . . . and effec tively reduce priming and carry-over. By accurately controlling pressure drop across the column, this system auto matically maintains optimum condi tions at all times.
FOXBORO d/pCEU. TftANSMITTeR
FCXBORO 1*740 STABIUOO RECOfttXNÇ RECOVER CONTROLLER
HEATlfiiS . "MEDIUM
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Principle of Operation The total pressure drop . . . made up of plate or packing resistance plus vapor and liquid mass velocities . . . gives a true measure of upward vapor velocity. This measurement provides an efficient way to control heat input to the column.
Simple Control System Basic clement of the control system is a Foxboro d/p Cell Transmitter . . . a compact force-balance instrument which continuously measures pressure differential and relays measurements to a Foxboro Model 4 0 Controller. Through a Stabilflo Valve in the heat supply, the controller regulates heat input to the-column . . . accurately varies it to maintain constant loading under varying feed compositions. For either continuous or batch-column op eration, it maintains steady boil-up at optimum rates, without overloading.
Information Available Engineering Data Sheet 282-14 gives details of these instruments and specific installation at Dow-Corning Corp.* Write The Foxboro Company, 954 Ncponset Ave., Foxboro, Mass., U.S.A. *May 1953 issue, CHEMICAL PROCESSING
Γ/Γ·ν#.-Γ·"τ.7· •^'"^»'·' 1500
SECRETARY'S Bef-ter T r a i n i n g — I I I n the first item on this subject (C&EN, March 22, page 1148), we told about a meeting held last Novem ber in which five agencies of the So ciety participated. The common in terest was chemical education. We promised to present in the next chapter a summary of what the ACS is doing in this field. Here it is. Division of Chemical Education. Since its establishment in 1924, this Division has given its attention wholly to matters related to education in one way or another. Its major activity has b e e n sponsorship of technical sessions at each of the semiannual national meetings of the Society. Some of its symposia have been concerned with aids to teachers, such as "Contents of the Basic Courses in Chemistry," "Lec ture Demonstrations," and "Subject Matter Versus Student." Many have b e e n devised to keep the teacher u p to d a t e , such as "Recent Advances in Or ganic Chemistry." Teacher-administra tors have been served by programs on "Building Construction" or "Federal Support of Basic Research." T h e Division also has sponsored in stitutes for chemistry teachers, pub lished the Journal of Chemical Edu cation, and developed and sponsored a cooperative test program. T h e institutes or workshops are the newest of the activities of this Divi sion. They were started at Oklahoma A&M College in 1950. Last year a western workshop was held at Cali fornia Institute of Technology and one in t h e East at Pennsylvania State Uni versity. This year the number has in creased to three at North Carolina State College, Kenyon College, and the University of Wyoming. Normally these have served only college chem istry teachers but t h e one at Kenyon in 1954 will involve h'gh school teachers, also. Committee on Professional Training. This Council Committee, established in 1936, has as its objective the im provement of training in chemistry at the college level. It has developed standards of undergraduate training believed to be essential for the educa tion of a professional chemist. Schools providing such training that wish to h a v e their departments of chemistry approved by the Committee may d o so through appropriate procedures. Grad u a t e s of these departments who are certified by the department head as having met the requirements specified by trie Committee are eligible for ACS membership, senior grade, two years after receiving a bachelor's degree in CHEMICAL
OFFICE
stead of five years as required for others. For the past eight years, the Com mittee has been studying graduate training intensively. T h r e e reports on "Graduate Training at t h e Doctozrate Level" have been issued and received wide distribution. Last year it col lected and published titles of theses submitted for doctoral degrees in chem istry and chemical engineering. Cur rently it is assembling for publication a bibliography of student theses titles at the doctorate level and of publica tions of faculty members directing re search of Ph.D. candidates. Committee on Chemical Education. This is one of the seven standing com mittees of the Council established in 1948. In the past six years, it has done a splendid job in two fields, the de velopment of vocational guida_nce literature and the direction of t h e stu dent affiliate program. T h e Society can indeed be proud of "Careers in Chem istry and Chemical Engineering," "The Chemical Profession," a n d "Shall I Study Chemistry?", the last two written by or under the supervision of the Committee which revises them an nually to keep them up t o date. The ACS now has chapters of stu dent affiliates in 288 colleges. Policy matters relating to the administration of these are the responsibility of 'this Committee. T h e program has h a d its difficulties during recent years becauise of decreasing undergraduate college enrollments. However, t h e number of chapters has increased steadily and their programs have continued to ex pand. Committee on Manpower. T h i s is a Board Committee and one of its original objectives was to interest yotuig men and women of outstanding ability in chemical careers. In 1952 its chair man asked that each local section create comparable committees and most did so. Through these groups the ACS Committee on Manpower and the ACS Committee on Chemical Educa tion have cooperated in a n extensive program of vocational counseling and related activities at the secondary school level. The Committee on M anpower currently has withdrawn from this field of work. Committee on Education and Stu dents. This Committee was set up by the Board of Directors in 1953 to study proposals relating to educational matters which demand Board action. To permit effective action, t h e Commit tee must keep informed on w h a t is being done by others in its field. This primarily is the reason for its calling (Continued on page 152%) AND
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