APPARATUS FOR PRODUCING METHACRYLIC ACID

To provide an apparatus for producing a methacrylic acid capable of simplifying a facility.SOLUTION: An apparatus for producing a methacrylic acid includes: a first reactor 10; second reactors Rto R(n represents an integer of 2 or more); a line LA which is connected to the outlet of the first rector 10 and the inlets of the second reactors Rto R, branches a flow coming out from the outlet of the first reactor 10, and supplies the branched flow to each of the inlets of the second reactors Rto R; and a line LB which is connected to each of the outlets of the second reactors Rto R, and merges the flows coming out from the outlets of the second reactors Rto R, in which a height A of the bottom of the second reactors Rto R, heights H of each of the second reactors Rto R, piping on a flow channel from the branch part of the line LA to the inlets of the second reactors Rto R, and piping on a flow channel from the outlets of the second reactors Rto Rto the merge part of the line LB satisfy predetermined conditions.SELECTED DRAWING: Figure 1 【課題】設備を簡略化し得るメタクリル酸の製造装置を提供すること。【解決手段】第一反応器１０と、第二反応器Ｒ１〜Ｒｎ（ｎは２以上の整数を示す）と、第一反応器１０の出口及び第二反応器Ｒ１〜Ｒｎの入口に接続され、第一反応器１０の出口から出た流を分岐して第二反応器Ｒ１〜Ｒｎのそれぞれの入口に供給するラインＬＡと、第二反応器Ｒ１〜Ｒｎのそれぞれの出口に接続され、第二反応器Ｒ１〜Ｒｎの出口から出た流を合流させるラインＬＢと、を備え、第二反応器Ｒ１〜Ｒｎ底部の高さＡ、第二反応器Ｒ１〜Ｒｎそれぞれの高さＨ、ラインＬＡの分岐部から第二反応器Ｒ１〜Ｒｎの入口までの流路における配管、及び第二反応器Ｒ１〜Ｒｎの出口からラインＬＢの合流部までの流路における配管が、所定の条件を満たす、メタクリル酸の製造装置。【選択図】図１