We study integrable structure of conformal field theory by means of Liouville reflection operator/Maulik Okounkov R-matrix. We discuss a relation between $RLL$ and current realization of the affine Yangian of gl(1). We construct a family of commuting transfer matrices related to the Intermediate Long Wave hierarchy  and derive Bethe anzatz equations  discovered by Nekrasov and Okounkov and independently by one of the authors. Joint work with Ilya Vilkoviskiy.